platform/kernel/linux-starfive.git
2 years agodt-bindings: serial: 8250: Add npcm845 compatible string
Tomer Maimon [Thu, 30 Jun 2022 10:35:51 +0000 (13:35 +0300)]
dt-bindings: serial: 8250: Add npcm845 compatible string

Add a compatible string for Nuvoton BMC NPCM845 UART.

Signed-off-by: Tomer Maimon <tmaimon77@gmail.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220630103606.83261-3-tmaimon77@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agoserial: 8250_dw: Use dw8250_serial_out() in dw8250_serial_out38x()
Ilpo Järvinen [Tue, 28 Jun 2022 13:42:31 +0000 (16:42 +0300)]
serial: 8250_dw: Use dw8250_serial_out() in dw8250_serial_out38x()

Place dw8250_serial_out() before dw8250_serial_out38x() so that it can
be called from dw8250_serial_out38x() to do the actual write.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20220628134234.53771-2-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years ago8250_dwlib: Convert bitops to newer form
Ilpo Järvinen [Thu, 30 Jun 2022 10:05:36 +0000 (13:05 +0300)]
8250_dwlib: Convert bitops to newer form

Instead of open-coding, use BIT(), GENMASK(), and FIELD_GET() helpers.

Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20220630100536.41329-1-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agoserial: 8250_dw: Drop PM ifdeffery
Andy Shevchenko [Thu, 30 Jun 2022 10:05:07 +0000 (13:05 +0300)]
serial: 8250_dw: Drop PM ifdeffery

Drop CONFIG_PM and CONFIG_PM_SLEEP ifdeffery while converting dw8250_pm_ops
to use new PM macros. Since we are using runtime PM, wrap dw8250_pm_ops into
pm_ptr().

Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20220630100507.31113-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agoserial: 8250_dw: Sort headers alphabetically
Andy Shevchenko [Thu, 30 Jun 2022 09:38:16 +0000 (12:38 +0300)]
serial: 8250_dw: Sort headers alphabetically

For the sake of better maintenance, sort included headers alphabetically.
While at it, split the serial group of headers which makes clear the
subsystem the driver belongs to.

Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20220630093816.28271-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agoearlycon: prevent multiple register_console()
Michael Walle [Tue, 28 Jun 2022 12:07:05 +0000 (14:07 +0200)]
earlycon: prevent multiple register_console()

If the earlycon parameter is given twice, the kernel will spit out a
WARN() in register_console() because it was already registered. The
non-dt variant setup_earlycon() already handles that gracefully. The dt
variant of_setup_earlycon() doesn't. Add the check there and add the
-EALREADY handling in early_init_dt_scan_chosen_stdout().

FWIW, this doesn't happen if CONFIG_ACPI_SPCR_TABLE is set. In that case
the registration is delayed until after earlycon parameter(s) are
parsed.

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Michael Walle <michael@walle.cc>
Link: https://lore.kernel.org/r/20220628120705.200617-1-michael@walle.cc
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agoserial: 8250_dw: Take port lock while accessing LSR
Ilpo Järvinen [Tue, 28 Jun 2022 09:01:28 +0000 (12:01 +0300)]
serial: 8250_dw: Take port lock while accessing LSR

Accessing LSR requires port lock because it mutates lsr_saved_flags
in serial_lsr_in().

Fixes: 197eb5c416ff ("serial: 8250_dw: Use serial_lsr_in() in dw8250_handle_irq()")
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/c5879db7-bee9-93f-526e-872a292442@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agoserial: 8250_port: Fix spelling mistake
Zhang Jiaming [Wed, 29 Jun 2022 09:44:11 +0000 (17:44 +0800)]
serial: 8250_port: Fix spelling mistake

Change 'timeing' to 'timing'.
Change 'Characteres' to 'Characters'.

Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Zhang Jiaming <jiaming@nfschina.com>
Link: https://lore.kernel.org/r/20220629094411.39066-1-jiaming@nfschina.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agotty: serial: samsung_tty: loopback mode support
Chanho Park [Wed, 29 Jun 2022 00:41:41 +0000 (09:41 +0900)]
tty: serial: samsung_tty: loopback mode support

Internal loopback mode can be supported by setting
UCON register's Loopback Mode bit. The mode & bit can be supported
since s3c2410 and later SoCs. The prefix of LOOPBACK / BIT(5) naming
should be also changed to S3C2410_ in order to avoid confusion.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Link: https://lore.kernel.org/r/20220629004141.51484-1-chanho61.park@samsung.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agotty: serial: samsung_tty: support more than 4 uart ports
Chanho Park [Wed, 29 Jun 2022 00:55:38 +0000 (09:55 +0900)]
tty: serial: samsung_tty: support more than 4 uart ports

Regarding Exynos Auto v9 SoC, it supports uarts up to 12. However, the
maximum number of the ports has been derived from
CONFIG_SERIAL_SAMSUNG_UARTS and tightly coupled with the config for
previous Samsung SoCs such as s3c24xx and s3c64xx. To overcome this
limitation, this changes the usage of the definition to UART_NR which is
widely used from other serial drivers. This also defines the value to 12
only for ARM64 SoCs to not affect the change to previous arm32 SoCs.

Instead of enumerating all the ports as predefined arrays, this
introduces s3c24xx_serial_init_port_default that is initializing the
structure as the default value.

Reviewed-by: Hector Martin <marcan@marcan.st>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Link: https://lore.kernel.org/r/20220629005538.60132-1-chanho61.park@samsung.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agoserial: 8250_dwlib: Support for 9th bit multipoint addressing
Ilpo Järvinen [Fri, 24 Jun 2022 20:42:10 +0000 (23:42 +0300)]
serial: 8250_dwlib: Support for 9th bit multipoint addressing

Add 9th bit multipoint addressing mode for DW UART. 9th bit addressing
can be used only when HW RS485 is available.

Updating RAR (receive address register) is bit tricky because busy
indication is not be available when DW UART is strictly 16550
compatible, which is the case with the hardware I was testing with. RAR
should not be updated while receive is in progress which is now
achieved by deasserting RE and waiting for one frame (in case rx would
be in progress, the driver seems to have no way of knowing it w/o busy
indication). Because of this complexity, it's better to avoid doing it
unless really needed.

Co-developed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Co-developed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Co-developed-by: Raymond Tan <raymond.tan@intel.com>
Co-developed-by: Lakshmi Sowjanya <lakshmi.sowjanya.d@intel.com>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Raymond Tan <raymond.tan@intel.com>
Signed-off-by: Lakshmi Sowjanya <lakshmi.sowjanya.d@intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20220624204210.11112-7-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agoserial: Support for RS-485 multipoint addresses
Ilpo Järvinen [Fri, 24 Jun 2022 20:42:09 +0000 (23:42 +0300)]
serial: Support for RS-485 multipoint addresses

Add support for RS-485 multipoint addressing using 9th bit [*]. The
addressing mode is configured through ->rs485_config().

ADDRB in termios indicates 9th bit addressing mode is enabled. In this
mode, 9th bit is used to indicate an address (byte) within the
communication line. ADDRB can only be enabled/disabled through
->rs485_config() that is also responsible for setting the destination and
receiver (filter) addresses.

Add traps to detect unwanted changes to struct serial_rs485 layout using
static_assert().

[*] Technically, RS485 is just an electronic spec and does not itself
specify the 9th bit addressing mode but 9th bit seems at least
"semi-standard" way to do addressing with RS485.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20220624204210.11112-6-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agoserial: take termios_rwsem for ->rs485_config() & pass termios as param
Ilpo Järvinen [Fri, 24 Jun 2022 20:42:08 +0000 (23:42 +0300)]
serial: take termios_rwsem for ->rs485_config() & pass termios as param

To be able to alter ADDRB within ->rs485_config(), take termios_rwsem
before calling ->rs485_config() and pass termios.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20220624204210.11112-5-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agoserial: 8250_lpss: Use 32-bit reads
Ilpo Järvinen [Fri, 24 Jun 2022 20:42:07 +0000 (23:42 +0300)]
serial: 8250_lpss: Use 32-bit reads

Use 32-bit reads in order to not lose higher bits of DW UART regs. This
change does not fix any known issue as the high bits are not used for
anything related to 8250 driver (dw8250_readl_ext and dw8250_writel_ext
used within the dwlib are already doing
readl/writel/ioread32be/iowrite32be anyway).

This change is necessary to enables 9th bit address mode. DW UART
reports address frames with BIT(8) of LSR.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20220624204210.11112-4-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agoserial: 8250: create lsr_save_mask
Ilpo Järvinen [Fri, 24 Jun 2022 20:42:06 +0000 (23:42 +0300)]
serial: 8250: create lsr_save_mask

Allow drivers to alter LSR save mask.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20220624204210.11112-3-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agoserial: 8250: make saved LSR larger
Ilpo Järvinen [Fri, 24 Jun 2022 20:42:05 +0000 (23:42 +0300)]
serial: 8250: make saved LSR larger

DW flags address received as BIT(8) in LSR. In order to not lose that
on read, enlarge lsr_saved_flags to u16.

Adjust lsr/status variables and related call chains to use u16.
Technically, some of these type conversion would not be needed but it
doesn't hurt to be consistent.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20220624204210.11112-2-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agoserial: Consolidate BOTH_EMPTY use
Ilpo Järvinen [Fri, 24 Jun 2022 20:54:24 +0000 (23:54 +0300)]
serial: Consolidate BOTH_EMPTY use

Per file BOTH_EMPTY defines are littering our source code here and
there. Define once in serial.h and create helper for the check
too.

Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20220624205424.12686-7-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agoserial: Convert SERIAL_XMIT_SIZE to UART_XMIT_SIZE
Ilpo Järvinen [Fri, 24 Jun 2022 20:54:23 +0000 (23:54 +0300)]
serial: Convert SERIAL_XMIT_SIZE to UART_XMIT_SIZE

Both UART_XMIT_SIZE and SERIAL_XMIT_SIZE are defined. Make them all
UART_XMIT_SIZE.

Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20220624205424.12686-6-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agoserial: 8250: Use C99 array initializer & define UART_REG_UNMAPPED
Ilpo Järvinen [Fri, 24 Jun 2022 20:54:22 +0000 (23:54 +0300)]
serial: 8250: Use C99 array initializer & define UART_REG_UNMAPPED

Use C99 array initializer insteads of comments and make unmapped checks
more obvious.

Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20220624205424.12686-5-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agoserial: Use bits for UART_LSR_BRK_ERROR_BITS/MSR_ANY_DELTA
Ilpo Järvinen [Fri, 24 Jun 2022 20:54:21 +0000 (23:54 +0300)]
serial: Use bits for UART_LSR_BRK_ERROR_BITS/MSR_ANY_DELTA

Instead of listing the bits for UART_LSR_BRK_ERROR_BITS and
UART_MSR_ANY_DELTA in comment, use them to define instead.

Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20220624205424.12686-4-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agoserial: msm: Rename UART_* defines to MSM_UART_*
Ilpo Järvinen [Fri, 24 Jun 2022 20:54:20 +0000 (23:54 +0300)]
serial: msm: Rename UART_* defines to MSM_UART_*

Using UART_* to name defines is a bit problematic. When trying to do
unrelated cleanup which also involved tweaking header inclusion logic,
caused UART_CSR from serial_reg.h to leak into msm's namespace which is
also among msm defines. Thus, rename all UART_* ones to MSM_UART_* to
eliminate possibility of collisions.

Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20220624205424.12686-3-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agoserial: msm: Convert container_of UART_TO_MSM to static inline
Ilpo Järvinen [Fri, 24 Jun 2022 20:54:19 +0000 (23:54 +0300)]
serial: msm: Convert container_of UART_TO_MSM to static inline

Create static inline instead of define as it provides type safety and
is safer wrt. macros expansion.

Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20220624205424.12686-2-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agoserial: st-asc: remove include of pm_runtime.h
Claudiu Beznea [Thu, 16 Jun 2022 14:00:24 +0000 (17:00 +0300)]
serial: st-asc: remove include of pm_runtime.h

st-asc driver doesn't use helpers from pm_runtime.h thus remove its
include.

Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/20220616140024.2081238-5-claudiu.beznea@microchip.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agotty: serial: atmel: remove enable/disable clock due to atmel_console_setup()
Claudiu Beznea [Thu, 16 Jun 2022 14:00:23 +0000 (17:00 +0300)]
tty: serial: atmel: remove enable/disable clock due to atmel_console_setup()

There is no need for clk_prepare_enable() at the beginning of
atmel_console_setup() and clk_disable_unprepare() at the end of
atmel_console_setup() as the clock is already enabled when calling
atmel_console_setup() and its disablement is done at the end
of probe.

Acked-by: Richard Genoud <richard.genoud@gmail.com>
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/20220616140024.2081238-4-claudiu.beznea@microchip.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agotty: serial: atmel: use devm_clk_get()
Claudiu Beznea [Thu, 16 Jun 2022 14:00:22 +0000 (17:00 +0300)]
tty: serial: atmel: use devm_clk_get()

Use devm_clk_get() for serial clock instead of clk_get()/clk_put().
With this move the clk_get in driver's probe function.

Acked-by: Richard Genoud <richard.genoud@gmail.com>
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/20220616140024.2081238-3-claudiu.beznea@microchip.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agotty: serial: atmel: stop using legacy pm ops
Claudiu Beznea [Thu, 16 Jun 2022 14:00:21 +0000 (17:00 +0300)]
tty: serial: atmel: stop using legacy pm ops

Stop using legacy PM ops and switch using dev_pm_ops. Along with
it #ifdef CONFIG_PM are removed and __maybe_unused and pm_ptr() used
instead. Coding style recommends (at chapter Conditional Compilation)
to avoid using preprocessor conditional and use __maybe_unused
instead.

Acked-by: Richard Genoud <richard.genoud@gmail.com>
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/20220616140024.2081238-2-claudiu.beznea@microchip.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agodt-bindings: serial: snps-dw-apb-uart: Add Rockchip RK3588
Sebastian Reichel [Thu, 23 Jun 2022 16:13:50 +0000 (18:13 +0200)]
dt-bindings: serial: snps-dw-apb-uart: Add Rockchip RK3588

Add a Rockchip RK3588 compatible.

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Link: https://lore.kernel.org/r/20220623161350.242079-1-sebastian.reichel@collabora.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agoserial: kgdboc: Fix typo in comment
Xiang wangx [Mon, 20 Jun 2022 10:46:53 +0000 (18:46 +0800)]
serial: kgdboc: Fix typo in comment

Delete the redundant word 'the'.

Signed-off-by: Xiang wangx <wangxiang@cdjrlc.com>
Link: https://lore.kernel.org/r/20220620104653.5451-1-wangxiang@cdjrlc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agoMAINTAINERS: Update DW 8250 UART maintainership
Ilpo Järvinen [Fri, 17 Jun 2022 09:39:29 +0000 (12:39 +0300)]
MAINTAINERS: Update DW 8250 UART maintainership

Add myself as maintainer for DW 8250 UART and up it to Supported.

Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/be58b398-71ff-7c12-1bf1-a09181d9c80@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agodt-bindings: serial: renesas,hscif: Document r8a779f0 bindings
Wolfram Sang [Mon, 13 Jun 2022 13:10:07 +0000 (15:10 +0200)]
dt-bindings: serial: renesas,hscif: Document r8a779f0 bindings

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20220613131007.10027-1-wsa+renesas@sang-engineering.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agotty: serial: Fix refcount leak bug in ucc_uart.c
Liang He [Sat, 18 Jun 2022 06:08:50 +0000 (14:08 +0800)]
tty: serial: Fix refcount leak bug in ucc_uart.c

In soc_info(), of_find_node_by_type() will return a node pointer
with refcount incremented. We should use of_node_put() when it is
not used anymore.

Acked-by: Timur Tabi <timur@kernel.org>
Signed-off-by: Liang He <windhl@126.com>
Link: https://lore.kernel.org/r/20220618060850.4058525-1-windhl@126.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agodrivers: tty: serial: Add missing of_node_put() in serial-tegra.c
Liang He [Wed, 15 Jun 2022 11:17:47 +0000 (19:17 +0800)]
drivers: tty: serial: Add missing of_node_put() in serial-tegra.c

In tegra_uart_init(), of_find_matching_node() will return a node
pointer with refcount incremented. We should use of_node_put()
when it is not used anymore.

Signed-off-by: Liang He <windhl@126.com>
Link: https://lore.kernel.org/r/20220615111747.3963930-1-windhl@126.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agoserial: Drop timeout from uart_port
Ilpo Järvinen [Mon, 13 Jun 2022 11:39:05 +0000 (14:39 +0300)]
serial: Drop timeout from uart_port

Since commit 31f6bd7fad3b ("serial: Store character timing information
to uart_port"), per frame timing information is available on uart_port.
Uart port's timeout can be derived from frame_time by multiplying with
fifosize.

Most callers of uart_poll_timeout are not made under port's lock. To be
on the safe side, make sure frame_time is only accessed once. As
fifo_size is effectively a constant, it shouldn't cause any issues.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20220613113905.22962-1-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agotty: Add closing marker into comment in tty_ldisc.h
Ilpo Järvinen [Tue, 14 Jun 2022 07:50:54 +0000 (10:50 +0300)]
tty: Add closing marker into comment in tty_ldisc.h

The closing `` is missing. Add it.

Fixes: 6bb6fa6908eb ("tty: Implement lookahead to process XON/XOFF timely")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/9bc6d45d-48c8-519-1646-78ba22505b1f@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agoserial: 8250_pericom: Use UART_LCR_DLAB
Ilpo Järvinen [Mon, 13 Jun 2022 07:57:36 +0000 (10:57 +0300)]
serial: 8250_pericom: Use UART_LCR_DLAB

Use UART_LCR_DLAB instead of literal.

Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20220613075736.12283-2-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agoserial: 8250: Use UART_LCR_WLEN8 instead of literal
Ilpo Järvinen [Mon, 13 Jun 2022 07:57:35 +0000 (10:57 +0300)]
serial: 8250: Use UART_LCR_WLEN8 instead of literal

Use UART_LCR_WLEN8 instead of literal 0x03 in size_fifo().

Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20220613075736.12283-1-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agoserial: sifive: Remove useless license text when SPDX-License-Identifier is already...
Christophe JAILLET [Sat, 11 Jun 2022 08:42:06 +0000 (10:42 +0200)]
serial: sifive: Remove useless license text when SPDX-License-Identifier is already used

An SPDX-License-Identifier is already in place. There is no need to
duplicate part of the corresponding license.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/dbc54eff6f4e077d9126054f395d5bc5b3405917.1654936915.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agotty/vt: consolemap: use E_TABSZ for the translations size
Jiri Slaby [Tue, 14 Jun 2022 09:05:37 +0000 (11:05 +0200)]
tty/vt: consolemap: use E_TABSZ for the translations size

The code expects "translations" to have 256 (E_TABSZ) values. Use the
macro instead of the constant to be explicit about this.

Suggested-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20220614090537.15557-8-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agotty/vt: consolemap: remove dflt reset from con_do_clear_unimap()
Jiri Slaby [Tue, 14 Jun 2022 09:05:36 +0000 (11:05 +0200)]
tty/vt: consolemap: remove dflt reset from con_do_clear_unimap()

con_do_clear_unimap() sets dflt to NULL and then calls
con_release_unimap() which does the very same as the first thing. So
remove the former as it is apparently superfluous.

Suggested-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20220614090537.15557-7-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agotty/vt: consolemap: improve UNI_*() macros definitions
Jiri Slaby [Tue, 14 Jun 2022 09:05:35 +0000 (11:05 +0200)]
tty/vt: consolemap: improve UNI_*() macros definitions

Use FIELD_GET() and GENMASK() helpers instead of direct shifts and ANDs.
This makes the code even more obvious. I didn't know about the helpers
at the time of writing the macros.

Suggested-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20220614090537.15557-6-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agotty/vt: consolemap: rename struct vc_data::vc_uni_pagedir*
Jiri Slaby [Tue, 14 Jun 2022 09:05:34 +0000 (11:05 +0200)]
tty/vt: consolemap: rename struct vc_data::vc_uni_pagedir*

As a follow-up to the commit 4173f018aae1 (tty/vt: consolemap: rename
and document struct uni_pagedir), rename also the members of struct
vc_data. I.e. pagedir -> pagedict. And while touching all the places,
remove also the unnecessary vc_ prefix.

Suggested-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20220614090537.15557-5-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agotty/vt: consolemap: saner variable names in set_inverse_transl()
Jiri Slaby [Tue, 14 Jun 2022 09:05:33 +0000 (11:05 +0200)]
tty/vt: consolemap: saner variable names in set_inverse_transl()

The function uses too vague variable names like i, j, k for iterators, p,
q, p1, p2 for pointers etc.

Rename all these, so that it is clear what is going on:
- dict: for dictionaries.
- d, r, g: for dir, row, glyph iterators -- these are unsigned now.
- dir, row: for directory and row pointers.
- glyph: for the glyph.
- and so on...

This is a lot of shuffling, but the result pays off, IMO.

Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20220614090537.15557-4-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agotty/vt: consolemap: saner variable names in set_inverse_trans_unicode()
Jiri Slaby [Tue, 14 Jun 2022 09:05:32 +0000 (11:05 +0200)]
tty/vt: consolemap: saner variable names in set_inverse_trans_unicode()

The function still uses too vague parameter name after commit
50c92a1b2d50 (tty/vt: consolemap: saner variable names in
set_inverse_trans_unicode()).

So use "dict" instead of "p" for that parameter too.

Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20220614090537.15557-3-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agotty/vt: consolemap: remove unused parameter from set_inverse_trans_unicode()
Jiri Slaby [Tue, 14 Jun 2022 09:05:31 +0000 (11:05 +0200)]
tty/vt: consolemap: remove unused parameter from set_inverse_trans_unicode()

conp is unused in set_inverse_trans_unicode(), remove it.

Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20220614090537.15557-2-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agotty/vt: consolemap: use ARRAY_SIZE(), part II.
Jiri Slaby [Tue, 14 Jun 2022 09:05:30 +0000 (11:05 +0200)]
tty/vt: consolemap: use ARRAY_SIZE(), part II.

The code still uses constants (macros) as bounds in loops after commit
17945d317a52 (tty/vt: consolemap: use ARRAY_SIZE()). The contants are at
least macros used also in the definition of the arrays. But use
ARRAY_SIZE() on two more places to ensure the loops never run out of
bounds even if the array definition change.

Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20220614090537.15557-1-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agoMerge tag 'v5.19-rc3' into tty-next
Greg Kroah-Hartman [Mon, 20 Jun 2022 07:32:47 +0000 (09:32 +0200)]
Merge tag 'v5.19-rc3' into tty-next

We need the tty/serial fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agoLinux 5.19-rc3
Linus Torvalds [Sun, 19 Jun 2022 20:06:47 +0000 (15:06 -0500)]
Linux 5.19-rc3

2 years agoMerge tag 'x86-urgent-2022-06-19' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 19 Jun 2022 14:58:28 +0000 (09:58 -0500)]
Merge tag 'x86-urgent-2022-06-19' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Thomas Gleixner:

 - Make RESERVE_BRK() work again with older binutils. The recent
   'simplification' broke that.

 - Make early #VE handling increment RIP when successful.

 - Make the #VE code consistent vs. the RIP adjustments and add
   comments.

 - Handle load_unaligned_zeropad() across page boundaries correctly in
   #VE when the second page is shared.

* tag 'x86-urgent-2022-06-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/tdx: Handle load_unaligned_zeropad() page-cross to a shared page
  x86/tdx: Clarify RIP adjustments in #VE handler
  x86/tdx: Fix early #VE handling
  x86/mm: Fix RESERVE_BRK() for older binutils

2 years agoMerge tag 'objtool-urgent-2022-06-19' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 19 Jun 2022 14:54:16 +0000 (09:54 -0500)]
Merge tag 'objtool-urgent-2022-06-19' of git://git./linux/kernel/git/tip/tip

Pull build tooling updates from Thomas Gleixner:

 - Remove obsolete CONFIG_X86_SMAP reference from objtool

 - Fix overlapping text section failures in faddr2line for real

 - Remove OBJECT_FILES_NON_STANDARD usage from x86 ftrace and replace it
   with finegrained annotations so objtool can validate that code
   correctly.

* tag 'objtool-urgent-2022-06-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/ftrace: Remove OBJECT_FILES_NON_STANDARD usage
  faddr2line: Fix overlapping text section failures, the sequel
  objtool: Fix obsolete reference to CONFIG_X86_SMAP

2 years agoMerge tag 'sched-urgent-2022-06-19' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 19 Jun 2022 14:51:00 +0000 (09:51 -0500)]
Merge tag 'sched-urgent-2022-06-19' of git://git./linux/kernel/git/tip/tip

Pull scheduler fix from Thomas Gleixner:
 "A single scheduler fix plugging a race between sched_setscheduler()
  and balance_push().

  sched_setscheduler() spliced the balance callbacks accross a lock
  break which makes it possible for an interleaving schedule() to
  observe an empty list"

* tag 'sched-urgent-2022-06-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched: Fix balance_push() vs __sched_setscheduler()

2 years agoMerge tag 'locking-urgent-2022-06-19' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 19 Jun 2022 14:47:41 +0000 (09:47 -0500)]
Merge tag 'locking-urgent-2022-06-19' of git://git./linux/kernel/git/tip/tip

Pull lockdep fix from Thomas Gleixner:
 "A RT fix for lockdep.

  lockdep invokes prandom_u32() to create cookies. This worked until
  prandom_u32() was switched to the real random generator, which takes a
  spinlock for extraction, which does not work on RT when invoked from
  atomic contexts.

  lockdep has no requirement for real random numbers and it turns out
  sched_clock() is good enough to create the cookie. That works
  everywhere and is faster"

* tag 'locking-urgent-2022-06-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  locking/lockdep: Use sched_clock() for random numbers

2 years agoMerge tag 'irq-urgent-2022-06-19' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 19 Jun 2022 14:45:16 +0000 (09:45 -0500)]
Merge tag 'irq-urgent-2022-06-19' of git://git./linux/kernel/git/tip/tip

Pull irq fixes from Thomas Gleixner:
 "A set of interrupt subsystem updates:

  Core:

   - Ensure runtime power management for chained interrupts

  Drivers:

   - A collection of OF node refcount fixes

   - Unbreak MIPS uniprocessor builds

   - Fix xilinx interrupt controller Kconfig dependencies

   - Add a missing compatible string to the Uniphier driver"

* tag 'irq-urgent-2022-06-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqchip/loongson-liointc: Use architecture register to get coreid
  irqchip/uniphier-aidet: Add compatible string for NX1 SoC
  dt-bindings: interrupt-controller/uniphier-aidet: Add bindings for NX1 SoC
  irqchip/realtek-rtl: Fix refcount leak in map_interrupts
  irqchip/gic-v3: Fix refcount leak in gic_populate_ppi_partitions
  irqchip/gic-v3: Fix error handling in gic_populate_ppi_partitions
  irqchip/apple-aic: Fix refcount leak in aic_of_ic_init
  irqchip/apple-aic: Fix refcount leak in build_fiq_affinity
  irqchip/gic/realview: Fix refcount leak in realview_gic_of_init
  irqchip/xilinx: Remove microblaze+zynq dependency
  genirq: PM: Use runtime PM for chained interrupts

2 years agoMerge tag 'char-misc-5.19-rc3-take2' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 19 Jun 2022 14:37:29 +0000 (09:37 -0500)]
Merge tag 'char-misc-5.19-rc3-take2' of git://git./linux/kernel/git/gregkh/char-misc

Pull char/misc driver fixes for real from Greg KH:
 "Let's tag the proper branch this time...

  Here are some small char/misc driver fixes for 5.19-rc3 that resolve
  some reported issues.

  They include:

   - mei driver fixes

   - comedi driver fix

   - rtsx build warning fix

   - fsl-mc-bus driver fix

  All of these have been in linux-next for a while with no reported
  issues"

This is what the merge in commit f0ec9c65a8d6 _should_ have merged, but
Greg fat-fingered the pull request and I got some small changes from
linux-next instead there. Credit to Nathan Chancellor for eagle-eyes.

Link: https://lore.kernel.org/all/Yqywy+Md2AfGDu8v@dev-arch.thelio-3990X/
* tag 'char-misc-5.19-rc3-take2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  bus: fsl-mc-bus: fix KASAN use-after-free in fsl_mc_bus_remove()
  mei: me: add raptor lake point S DID
  mei: hbm: drop capability response on early shutdown
  mei: me: set internal pg flag to off on hardware reset
  misc: rtsx: Fix clang -Wsometimes-uninitialized in rts5261_init_from_hw()
  comedi: vmk80xx: fix expression for tx buffer size

2 years agoMerge tag 'i2c-for-5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa...
Linus Torvalds [Sun, 19 Jun 2022 14:35:09 +0000 (09:35 -0500)]
Merge tag 'i2c-for-5.19-rc3' of git://git./linux/kernel/git/wsa/linux

Pull i2c fixes from Wolfram Sang:
 "MAINTAINERS rectifications and a few minor driver fixes"

* tag 'i2c-for-5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: mediatek: Fix an error handling path in mtk_i2c_probe()
  i2c: designware: Use standard optional ref clock implementation
  MAINTAINERS: core DT include belongs to core
  MAINTAINERS: add include/dt-bindings/i2c to I2C SUBSYSTEM HOST DRIVERS
  i2c: npcm7xx: Add check for platform_driver_register
  MAINTAINERS: Update Synopsys DesignWare I2C to Supported

2 years agoMerge tag 'xfs-5.19-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Linus Torvalds [Sun, 19 Jun 2022 14:24:49 +0000 (09:24 -0500)]
Merge tag 'xfs-5.19-fixes-1' of git://git./fs/xfs/xfs-linux

Pull xfs fixes from Darrick Wong:
 "There's not a whole lot this time around (I'm still on vacation) but
  here are some important fixes for new features merged in -rc1:

   - Fix a bug where inode flag changes would accidentally drop nrext64

   - Fix a race condition when toggling LARP mode"

* tag 'xfs-5.19-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  xfs: preserve DIFLAG2_NREXT64 when setting other inode attributes
  xfs: fix variable state usage
  xfs: fix TOCTOU race involving the new logged xattrs control knob

2 years agoMerge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 19 Jun 2022 02:51:12 +0000 (21:51 -0500)]
Merge tag 'ext4_for_linus_stable' of git://git./linux/kernel/git/tytso/ext4

Pull ext4 fixes from Ted Ts'o:
 "Fix a variety of bugs, many of which were found by folks using fuzzing
  or error injection.

  Also fix up how test_dummy_encryption mount option is handled for the
  new mount API.

  Finally, fix/cleanup a number of comments and ext4 Documentation
  files"

* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  ext4: fix a doubled word "need" in a comment
  ext4: add reserved GDT blocks check
  ext4: make variable "count" signed
  ext4: correct the judgment of BUG in ext4_mb_normalize_request
  ext4: fix bug_on ext4_mb_use_inode_pa
  ext4: fix up test_dummy_encryption handling for new mount API
  ext4: use kmemdup() to replace kmalloc + memcpy
  ext4: fix super block checksum incorrect after mount
  ext4: improve write performance with disabled delalloc
  ext4: fix warning when submitting superblock in ext4_commit_super()
  ext4, doc: remove unnecessary escaping
  ext4: fix incorrect comment in ext4_bio_write_page()
  fs: fix jbd2_journal_try_to_free_buffers() kernel-doc comment

2 years agoMerge tag '5.19-rc2-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6
Linus Torvalds [Sun, 19 Jun 2022 02:44:44 +0000 (21:44 -0500)]
Merge tag '5.19-rc2-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs client fixes from Steve French:
 "Two cifs debugging improvements - one found to deal with debugging a
  multichannel problem and one for a recent fallocate issue

  This does include the two larger multichannel reconnect (dynamically
  adjusting interfaces on reconnect) patches, because we recently found
  an additional problem with multichannel to one server type that I want
  to include at the same time"

* tag '5.19-rc2-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: when a channel is not found for server, log its connection id
  smb3: add trace point for SMB2_set_eof

2 years agoext4: fix a doubled word "need" in a comment
Xiang wangx [Sun, 5 Jun 2022 09:15:03 +0000 (17:15 +0800)]
ext4: fix a doubled word "need" in a comment

Signed-off-by: Xiang wangx <wangxiang@cdjrlc.com>
Link: https://lore.kernel.org/r/20220605091503.12513-1-wangxiang@cdjrlc.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2 years agoext4: add reserved GDT blocks check
Zhang Yi [Wed, 1 Jun 2022 09:27:17 +0000 (17:27 +0800)]
ext4: add reserved GDT blocks check

We capture a NULL pointer issue when resizing a corrupt ext4 image which
is freshly clear resize_inode feature (not run e2fsck). It could be
simply reproduced by following steps. The problem is because of the
resize_inode feature was cleared, and it will convert the filesystem to
meta_bg mode in ext4_resize_fs(), but the es->s_reserved_gdt_blocks was
not reduced to zero, so could we mistakenly call reserve_backup_gdb()
and passing an uninitialized resize_inode to it when adding new group
descriptors.

 mkfs.ext4 /dev/sda 3G
 tune2fs -O ^resize_inode /dev/sda #forget to run requested e2fsck
 mount /dev/sda /mnt
 resize2fs /dev/sda 8G

 ========
 BUG: kernel NULL pointer dereference, address: 0000000000000028
 CPU: 19 PID: 3243 Comm: resize2fs Not tainted 5.18.0-rc7-00001-gfde086c5ebfd #748
 ...
 RIP: 0010:ext4_flex_group_add+0xe08/0x2570
 ...
 Call Trace:
  <TASK>
  ext4_resize_fs+0xbec/0x1660
  __ext4_ioctl+0x1749/0x24e0
  ext4_ioctl+0x12/0x20
  __x64_sys_ioctl+0xa6/0x110
  do_syscall_64+0x3b/0x90
  entry_SYSCALL_64_after_hwframe+0x44/0xae
 RIP: 0033:0x7f2dd739617b
 ========

The fix is simple, add a check in ext4_resize_begin() to make sure that
the es->s_reserved_gdt_blocks is zero when the resize_inode feature is
disabled.

Cc: stable@kernel.org
Signed-off-by: Zhang Yi <yi.zhang@huawei.com>
Reviewed-by: Ritesh Harjani <ritesh.list@gmail.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20220601092717.763694-1-yi.zhang@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2 years agoext4: make variable "count" signed
Ding Xiang [Mon, 30 May 2022 10:00:47 +0000 (18:00 +0800)]
ext4: make variable "count" signed

Since dx_make_map() may return -EFSCORRUPTED now, so change "count" to
be a signed integer so we can correctly check for an error code returned
by dx_make_map().

Fixes: 46c116b920eb ("ext4: verify dir block before splitting it")
Cc: stable@kernel.org
Signed-off-by: Ding Xiang <dingxiang@cmss.chinamobile.com>
Link: https://lore.kernel.org/r/20220530100047.537598-1-dingxiang@cmss.chinamobile.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2 years agoext4: correct the judgment of BUG in ext4_mb_normalize_request
Baokun Li [Sat, 28 May 2022 11:00:16 +0000 (19:00 +0800)]
ext4: correct the judgment of BUG in ext4_mb_normalize_request

ext4_mb_normalize_request() can move logical start of allocated blocks
to reduce fragmentation and better utilize preallocation. However logical
block requested as a start of allocation (ac->ac_o_ex.fe_logical) should
always be covered by allocated blocks so we should check that by
modifying and to or in the assertion.

Signed-off-by: Baokun Li <libaokun1@huawei.com>
Reviewed-by: Ritesh Harjani <ritesh.list@gmail.com>
Link: https://lore.kernel.org/r/20220528110017.354175-3-libaokun1@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2 years agoext4: fix bug_on ext4_mb_use_inode_pa
Baokun Li [Sat, 28 May 2022 11:00:15 +0000 (19:00 +0800)]
ext4: fix bug_on ext4_mb_use_inode_pa

Hulk Robot reported a BUG_ON:
==================================================================
kernel BUG at fs/ext4/mballoc.c:3211!
[...]
RIP: 0010:ext4_mb_mark_diskspace_used.cold+0x85/0x136f
[...]
Call Trace:
 ext4_mb_new_blocks+0x9df/0x5d30
 ext4_ext_map_blocks+0x1803/0x4d80
 ext4_map_blocks+0x3a4/0x1a10
 ext4_writepages+0x126d/0x2c30
 do_writepages+0x7f/0x1b0
 __filemap_fdatawrite_range+0x285/0x3b0
 file_write_and_wait_range+0xb1/0x140
 ext4_sync_file+0x1aa/0xca0
 vfs_fsync_range+0xfb/0x260
 do_fsync+0x48/0xa0
[...]
==================================================================

Above issue may happen as follows:
-------------------------------------
do_fsync
 vfs_fsync_range
  ext4_sync_file
   file_write_and_wait_range
    __filemap_fdatawrite_range
     do_writepages
      ext4_writepages
       mpage_map_and_submit_extent
        mpage_map_one_extent
         ext4_map_blocks
          ext4_mb_new_blocks
           ext4_mb_normalize_request
            >>> start + size <= ac->ac_o_ex.fe_logical
           ext4_mb_regular_allocator
            ext4_mb_simple_scan_group
             ext4_mb_use_best_found
              ext4_mb_new_preallocation
               ext4_mb_new_inode_pa
                ext4_mb_use_inode_pa
                 >>> set ac->ac_b_ex.fe_len <= 0
           ext4_mb_mark_diskspace_used
            >>> BUG_ON(ac->ac_b_ex.fe_len <= 0);

we can easily reproduce this problem with the following commands:
`fallocate -l100M disk`
`mkfs.ext4 -b 1024 -g 256 disk`
`mount disk /mnt`
`fsstress -d /mnt -l 0 -n 1000 -p 1`

The size must be smaller than or equal to EXT4_BLOCKS_PER_GROUP.
Therefore, "start + size <= ac->ac_o_ex.fe_logical" may occur
when the size is truncated. So start should be the start position of
the group where ac_o_ex.fe_logical is located after alignment.
In addition, when the value of fe_logical or EXT4_BLOCKS_PER_GROUP
is very large, the value calculated by start_off is more accurate.

Cc: stable@kernel.org
Fixes: cd648b8a8fd5 ("ext4: trim allocation requests to group size")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Baokun Li <libaokun1@huawei.com>
Reviewed-by: Ritesh Harjani <ritesh.list@gmail.com>
Link: https://lore.kernel.org/r/20220528110017.354175-2-libaokun1@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2 years agoext4: fix up test_dummy_encryption handling for new mount API
Eric Biggers [Thu, 26 May 2022 04:04:12 +0000 (21:04 -0700)]
ext4: fix up test_dummy_encryption handling for new mount API

Since ext4 was converted to the new mount API, the test_dummy_encryption
mount option isn't being handled entirely correctly, because the needed
fscrypt_set_test_dummy_encryption() helper function combines
parsing/checking/applying into one function.  That doesn't work well
with the new mount API, which split these into separate steps.

This was sort of okay anyway, due to the parsing logic that was copied
from fscrypt_set_test_dummy_encryption() into ext4_parse_param(),
combined with an additional check in ext4_check_test_dummy_encryption().
However, these overlooked the case of changing the value of
test_dummy_encryption on remount, which isn't allowed but ext4 wasn't
detecting until ext4_apply_options() when it's too late to fail.
Another bug is that if test_dummy_encryption was specified multiple
times with an argument, memory was leaked.

Fix this up properly by using the new helper functions that allow
splitting up the parse/check/apply steps for test_dummy_encryption.

Fixes: cebe85d570cf ("ext4: switch to the new mount api")
Signed-off-by: Eric Biggers <ebiggers@google.com>
Link: https://lore.kernel.org/r/20220526040412.173025-1-ebiggers@kernel.org
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2 years agoext4: use kmemdup() to replace kmalloc + memcpy
Shuqi Zhang [Wed, 25 May 2022 03:01:20 +0000 (11:01 +0800)]
ext4: use kmemdup() to replace kmalloc + memcpy

Replace kmalloc + memcpy with kmemdup()

Signed-off-by: Shuqi Zhang <zhangshuqi3@huawei.com>
Reviewed-by: Ritesh Harjani <ritesh.list@gmail.com>
Link: https://lore.kernel.org/r/20220525030120.803330-1-zhangshuqi3@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2 years agoext4: fix super block checksum incorrect after mount
Ye Bin [Wed, 25 May 2022 01:29:04 +0000 (09:29 +0800)]
ext4: fix super block checksum incorrect after mount

We got issue as follows:
[home]# mount  /dev/sda  test
EXT4-fs (sda): warning: mounting fs with errors, running e2fsck is recommended
[home]# dmesg
EXT4-fs (sda): warning: mounting fs with errors, running e2fsck is recommended
EXT4-fs (sda): Errors on filesystem, clearing orphan list.
EXT4-fs (sda): recovery complete
EXT4-fs (sda): mounted filesystem with ordered data mode. Quota mode: none.
[home]# debugfs /dev/sda
debugfs 1.46.5 (30-Dec-2021)
Checksum errors in superblock!  Retrying...

Reason is ext4_orphan_cleanup will reset ‘s_last_orphan’ but not update
super block checksum.

To solve above issue, defer update super block checksum after
ext4_orphan_cleanup.

Signed-off-by: Ye Bin <yebin10@huawei.com>
Cc: stable@kernel.org
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Ritesh Harjani <ritesh.list@gmail.com>
Link: https://lore.kernel.org/r/20220525012904.1604737-1-yebin10@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2 years agocifs: when a channel is not found for server, log its connection id
Shyam Prasad N [Tue, 14 Jun 2022 11:47:24 +0000 (11:47 +0000)]
cifs: when a channel is not found for server, log its connection id

cifs_ses_get_chan_index gets the index for a given server pointer.
When a match is not found, we warn about a possible bug.
However, printing details about the non-matching server could be
more useful to debug here.

Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
2 years agox86/tdx: Handle load_unaligned_zeropad() page-cross to a shared page
Kirill A. Shutemov [Tue, 14 Jun 2022 12:01:35 +0000 (15:01 +0300)]
x86/tdx: Handle load_unaligned_zeropad() page-cross to a shared page

load_unaligned_zeropad() can lead to unwanted loads across page boundaries.
The unwanted loads are typically harmless. But, they might be made to
totally unrelated or even unmapped memory. load_unaligned_zeropad()
relies on exception fixup (#PF, #GP and now #VE) to recover from these
unwanted loads.

In TDX guests, the second page can be shared page and a VMM may configure
it to trigger #VE.

The kernel assumes that #VE on a shared page is an MMIO access and tries to
decode instruction to handle it. In case of load_unaligned_zeropad() it
may result in confusion as it is not MMIO access.

Fix it by detecting split page MMIO accesses and failing them.
load_unaligned_zeropad() will recover using exception fixups.

The issue was discovered by analysis and reproduced artificially. It was
not triggered during testing.

[ dhansen: fix up changelogs and comments for grammar and clarity,
   plus incorporate Kirill's off-by-one fix]

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Link: https://lkml.kernel.org/r/20220614120135.14812-4-kirill.shutemov@linux.intel.com
2 years agoMerge tag 'nfs-for-5.19-2' of git://git.linux-nfs.org/projects/anna/linux-nfs
Linus Torvalds [Fri, 17 Jun 2022 20:17:57 +0000 (15:17 -0500)]
Merge tag 'nfs-for-5.19-2' of git://git.linux-nfs.org/projects/anna/linux-nfs

Pull NFS client fixes from Anna Schumaker:

 - Add FMODE_CAN_ODIRECT support to NFSv4 so opens don't fail

 - Fix trunking detection & cl_max_connect setting

 - Avoid pnfs_update_layout() livelocks

 - Don't keep retrying pNFS if the server replies with NFS4ERR_UNAVAILABLE

* tag 'nfs-for-5.19-2' of git://git.linux-nfs.org/projects/anna/linux-nfs:
  NFSv4: Add FMODE_CAN_ODIRECT after successful open of a NFS4.x file
  sunrpc: set cl_max_connect when cloning an rpc_clnt
  pNFS: Avoid a live lock condition in pnfs_update_layout()
  pNFS: Don't keep retrying if the server replied NFS4ERR_LAYOUTUNAVAILABLE

2 years agoMerge tag 'pci-v5.19-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaa...
Linus Torvalds [Fri, 17 Jun 2022 20:12:20 +0000 (15:12 -0500)]
Merge tag 'pci-v5.19-fixes-2' of git://git./linux/kernel/git/helgaas/pci

Pull pci fix from Bjorn Helgaas:
 "Revert clipping of PCI host bridge windows to avoid E820 regions,
  which broke several machines by forcing unnecessary BAR reassignments
  (Hans de Goede)"

* tag 'pci-v5.19-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  x86/PCI: Revert "x86/PCI: Clip only host bridge windows for E820 regions"

2 years agoMerge tag 'printk-for-5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 17 Jun 2022 19:57:42 +0000 (14:57 -0500)]
Merge tag 'printk-for-5.19-rc3' of git://git./linux/kernel/git/printk/linux

Pull printk fixes from Petr Mladek:
 "Make the global console_sem available for CPU that is handling panic()
  or shutdown.

  This is an old problem when an existing console lock owner might block
  console output, but it became more visible with the kthreads"

* tag 'printk-for-5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux:
  printk: Wait for the global console lock when the system is going down
  printk: Block console kthreads when direct printing will be required

2 years agox86/PCI: Revert "x86/PCI: Clip only host bridge windows for E820 regions"
Hans de Goede [Sun, 12 Jun 2022 14:43:25 +0000 (16:43 +0200)]
x86/PCI: Revert "x86/PCI: Clip only host bridge windows for E820 regions"

This reverts commit 4c5e242d3e93.

Prior to 4c5e242d3e93 ("x86/PCI: Clip only host bridge windows for E820
regions"), E820 regions did not affect PCI host bridge windows.  We only
looked at E820 regions and avoided them when allocating new MMIO space.
If firmware PCI bridge window and BAR assignments used E820 regions, we
left them alone.

After 4c5e242d3e93, we removed E820 regions from the PCI host bridge
windows before looking at BARs, so firmware assignments in E820 regions
looked like errors, and we moved things around to fit in the space left
(if any) after removing the E820 regions.  This unnecessary BAR
reassignment broke several machines.

Guilherme reported that Steam Deck fails to boot after 4c5e242d3e93.  We
clipped the window that contained most 32-bit BARs:

  BIOS-e820: [mem 0x00000000a0000000-0x00000000a00fffff] reserved
  acpi PNP0A08:00: clipped [mem 0x80000000-0xf7ffffff window] to [mem 0xa0100000-0xf7ffffff window] for e820 entry [mem 0xa0000000-0xa00fffff]

which forced us to reassign all those BARs, for example, this NVMe BAR:

  pci 0000:00:01.2: PCI bridge to [bus 01]
  pci 0000:00:01.2:   bridge window [mem 0x80600000-0x806fffff]
  pci 0000:01:00.0: BAR 0: [mem 0x80600000-0x80603fff 64bit]
  pci 0000:00:01.2: can't claim window [mem 0x80600000-0x806fffff]: no compatible bridge window
  pci 0000:01:00.0: can't claim BAR 0 [mem 0x80600000-0x80603fff 64bit]: no compatible bridge window

  pci 0000:00:01.2: bridge window: assigned [mem 0xa0100000-0xa01fffff]
  pci 0000:01:00.0: BAR 0: assigned [mem 0xa0100000-0xa0103fff 64bit]

All the reassignments were successful, so the devices should have been
functional at the new addresses, but some were not.

Andy reported a similar failure on an Intel MID platform.  Benjamin
reported a similar failure on a VMWare Fusion VM.

Note: this is not a clean revert; this revert keeps the later change to
make the clipping dependent on a new pci_use_e820 bool, moving the checking
of this bool to arch_remove_reservations().

[bhelgaas: commit log, add more reporters and testers]
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=216109
Reported-by: Guilherme G. Piccoli <gpiccoli@igalia.com>
Reported-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reported-by: Benjamin Coddington <bcodding@redhat.com>
Reported-by: Jongman Heo <jongman.heo@gmail.com>
Fixes: 4c5e242d3e93 ("x86/PCI: Clip only host bridge windows for E820 regions")
Link: https://lore.kernel.org/r/20220612144325.85366-1-hdegoede@redhat.com
Tested-by: Guilherme G. Piccoli <gpiccoli@igalia.com>
Tested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2 years agoMerge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Linus Torvalds [Fri, 17 Jun 2022 18:55:19 +0000 (13:55 -0500)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux

Pull arm64 fixes from Catalin Marinas:

 - Revert the moving of the jump labels initialisation before
   setup_machine_fdt(). The bug was fixed in drivers/char/random.c.

 - Ftrace fixes: branch range check and consistent handling of PLTs.

 - Clean rather than invalidate FROM_DEVICE buffers at start of DMA
   transfer (safer if such buffer is mapped in user space). A cache
   invalidation is done already at the end of the transfer.

 - A couple of clean-ups (unexport symbol, remove unused label).

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: mm: Don't invalidate FROM_DEVICE buffers at start of DMA transfer
  arm64/cpufeature: Unexport set_cpu_feature()
  arm64: ftrace: remove redundant label
  arm64: ftrace: consistently handle PLTs.
  arm64: ftrace: fix branch range checks
  Revert "arm64: Initialize jump labels before setup_machine_fdt()"

2 years agoMerge tag 'loongarch-fixes-5.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 17 Jun 2022 18:50:24 +0000 (13:50 -0500)]
Merge tag 'loongarch-fixes-5.19-2' of git://git./linux/kernel/git/chenhuacai/linux-loongson

Pull LoongArch fixes from Huacai Chen:
 "Add missing ELF_DETAILS in vmlinux.lds.S and fix document rendering"

* tag 'loongarch-fixes-5.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson:
  docs/zh_CN/LoongArch: Fix notes rendering by using reST directives
  docs/LoongArch: Fix notes rendering by using reST directives
  LoongArch: vmlinux.lds.S: Add missing ELF_DETAILS

2 years agoMerge tag 'riscv-for-linus-5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 17 Jun 2022 18:45:47 +0000 (13:45 -0500)]
Merge tag 'riscv-for-linus-5.19-rc3' of git://git./linux/kernel/git/riscv/linux

Pull RISC-V fixes from Palmer Dabbelt:

 - A fix for the PolarFire SOC's device tree

 - A handful of fixes for the recently added Svpmbt support

 - An improvement to the Kconfig text for Svpbmt

* tag 'riscv-for-linus-5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
  riscv: Improve description for RISCV_ISA_SVPBMT Kconfig symbol
  riscv: drop cpufeature_apply_feature tracking variable
  riscv: fix dependency for t-head errata
  riscv: dts: microchip: re-add pdma to mpfs device tree

2 years agoMerge tag 'hyperv-fixes-signed-20220617' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 17 Jun 2022 18:39:12 +0000 (13:39 -0500)]
Merge tag 'hyperv-fixes-signed-20220617' of git://git./linux/kernel/git/hyperv/linux

Pull hyperv fixes from Wei Liu:

 - Fix hv_init_clocksource annotation (Masahiro Yamada)

 - Two bug fixes for vmbus driver (Saurabh Sengar)

 - Fix SEV negotiation (Tianyu Lan)

 - Fix comments in code (Xiang Wang)

 - One minor fix to HID driver (Michael Kelley)

* tag 'hyperv-fixes-signed-20220617' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux:
  x86/Hyper-V: Add SEV negotiate protocol support in Isolation VM
  Drivers: hv: vmbus: Release cpu lock in error case
  HID: hyperv: Correctly access fields declared as __le16
  clocksource: hyper-v: unexport __init-annotated hv_init_clocksource()
  Drivers: hv: Fix syntax errors in comments
  Drivers: hv: vmbus: Don't assign VMbus channel interrupts to isolated CPUs

2 years agoMerge tag 'block-5.19-2022-06-16' of git://git.kernel.dk/linux-block
Linus Torvalds [Fri, 17 Jun 2022 18:22:58 +0000 (11:22 -0700)]
Merge tag 'block-5.19-2022-06-16' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:

 - NVMe pull request from Christoph
      - Quirks, quirks, quirks to work around buggy consumer grade
        devices (Keith Bush, Ning Wang, Stefan Reiter, Rasheed Hsueh)
      - Better kernel messages for devices that need quirking (Keith
        Bush)
      - Make a kernel message more useful (Thomas Weißschuh)

 - MD pull request from Song, with a few fixes

 - blk-mq sysfs locking fixes (Ming)

 - BFQ stats fix (Bart)

 - blk-mq offline queue fix (Bart)

 - blk-mq flush request tag fix (Ming)

* tag 'block-5.19-2022-06-16' of git://git.kernel.dk/linux-block:
  block/bfq: Enable I/O statistics
  blk-mq: don't clear flush_rq from tags->rqs[]
  blk-mq: avoid to touch q->elevator without any protection
  blk-mq: protect q->elevator by ->sysfs_lock in blk_mq_elv_switch_none
  block: Fix handling of offline queues in blk_mq_alloc_request_hctx()
  md/raid5-ppl: Fix argument order in bio_alloc_bioset()
  Revert "md: don't unregister sync_thread with reconfig_mutex held"
  nvme-pci: disable write zeros support on UMIC and Samsung SSDs
  nvme-pci: avoid the deepest sleep state on ZHITAI TiPro7000 SSDs
  nvme-pci: sk hynix p31 has bogus namespace ids
  nvme-pci: smi has bogus namespace ids
  nvme-pci: phison e12 has bogus namespace ids
  nvme-pci: add NVME_QUIRK_BOGUS_NID for ADATA XPG GAMMIX S50
  nvme-pci: add trouble shooting steps for timeouts
  nvme: add bug report info for global duplicate id
  nvme: add device name to warning in uuid_show()

2 years agoMerge tag 'io_uring-5.19-2022-06-16' of git://git.kernel.dk/linux-block
Linus Torvalds [Fri, 17 Jun 2022 18:14:07 +0000 (11:14 -0700)]
Merge tag 'io_uring-5.19-2022-06-16' of git://git.kernel.dk/linux-block

Pull io_uring fixes from Jens Axboe:
 "Bigger than usual at this time, both because we missed -rc2, but also
  because of some reverts that we chose to do. In detail:

   - Adjust mapped buffer API while we still can (Dylan)

   - Mapped buffer fixes (Dylan, Hao, Pavel, me)

   - Fix for uring_cmd wrong API usage for task_work (Dylan)

   - Fix for bug introduced in fixed file closing (Hao)

   - Fix race in buffer/file resource handling (Pavel)

   - Revert the NOP support for CQE32 and buffer selection that was
     brought up during the merge window (Pavel)

   - Remove IORING_CLOSE_FD_AND_FILE_SLOT introduced in this merge
     window. The API needs further refining, so just yank it for now and
     we'll revisit for a later kernel.

   - Series cleaning up the CQE32 support added in this merge window,
     making it more integrated rather than sitting on the side (Pavel)"

* tag 'io_uring-5.19-2022-06-16' of git://git.kernel.dk/linux-block: (21 commits)
  io_uring: recycle provided buffer if we punt to io-wq
  io_uring: do not use prio task_work_add in uring_cmd
  io_uring: commit non-pollable provided mapped buffers upfront
  io_uring: make io_fill_cqe_aux honour CQE32
  io_uring: remove __io_fill_cqe() helper
  io_uring: fix ->extra{1,2} misuse
  io_uring: fill extra big cqe fields from req
  io_uring: unite fill_cqe and the 32B version
  io_uring: get rid of __io_fill_cqe{32}_req()
  io_uring: remove IORING_CLOSE_FD_AND_FILE_SLOT
  Revert "io_uring: add buffer selection support to IORING_OP_NOP"
  Revert "io_uring: support CQE32 for nop operation"
  io_uring: limit size of provided buffer ring
  io_uring: fix types in provided buffer ring
  io_uring: fix index calculation
  io_uring: fix double unlock for pbuf select
  io_uring: kbuf: fix bug of not consuming ring buffer in partial io case
  io_uring: openclose: fix bug of closing wrong fixed file
  io_uring: fix not locked access to fixed buf table
  io_uring: fix races with buffer table unregister
  ...

2 years agoarm64: mm: Don't invalidate FROM_DEVICE buffers at start of DMA transfer
Will Deacon [Fri, 10 Jun 2022 15:12:27 +0000 (16:12 +0100)]
arm64: mm: Don't invalidate FROM_DEVICE buffers at start of DMA transfer

Invalidating the buffer memory in arch_sync_dma_for_device() for
FROM_DEVICE transfers

When using the streaming DMA API to map a buffer prior to inbound
non-coherent DMA (i.e. DMA_FROM_DEVICE), we invalidate any dirty CPU
cachelines so that they will not be written back during the transfer and
corrupt the buffer contents written by the DMA. This, however, poses two
potential problems:

  (1) If the DMA transfer does not write to every byte in the buffer,
      then the unwritten bytes will contain stale data once the transfer
      has completed.

  (2) If the buffer has a virtual alias in userspace, then stale data
      may be visible via this alias during the period between performing
      the cache invalidation and the DMA writes landing in memory.

Address both of these issues by cleaning (aka writing-back) the dirty
lines in arch_sync_dma_for_device(DMA_FROM_DEVICE) instead of discarding
them using invalidation.

Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20220606152150.GA31568@willie-the-truck
Signed-off-by: Will Deacon <will@kernel.org>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20220610151228.4562-2-will@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2 years agoMerge tag 'fs_for_v5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/jack...
Linus Torvalds [Fri, 17 Jun 2022 17:09:24 +0000 (10:09 -0700)]
Merge tag 'fs_for_v5.19-rc3' of git://git./linux/kernel/git/jack/linux-fs

Pull writeback and ext2 fixes from Jan Kara:
 "A fix for writeback bug which prevented machines with kdevtmpfs from
  booting and also one small ext2 bugfix in IO error handling"

* tag 'fs_for_v5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  init: Initialize noop_backing_dev_info early
  ext2: fix fs corruption when trying to remove a non-empty directory with IO error

2 years agoMerge tag 'for-5.19/dm-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 17 Jun 2022 17:03:53 +0000 (10:03 -0700)]
Merge tag 'for-5.19/dm-fixes-3' of git://git./linux/kernel/git/device-mapper/linux-dm

Pull device mapper fixes from Mike Snitzer:

 - Fix a race in DM core's dm_start_io_acct that could result in double
   accounting for abnormal IO (e.g. discards, write zeroes, etc).

 - Fix a use-after-free in DM core's dm_put_live_table_bio.

 - Fix a race for REQ_NOWAIT bios being issued despite no support from
   underlying DM targets (due to DM table reload at an "unlucky" time)

 - Fix access beyond allocated bitmap in DM mirror's log.

* tag 'for-5.19/dm-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
  dm mirror log: round up region bitmap size to BITS_PER_LONG
  dm: fix narrow race for REQ_NOWAIT bios being issued despite no support
  dm: fix use-after-free in dm_put_live_table_bio
  dm: fix race in dm_start_io_acct

2 years agoMerge tag 'hwmon-for-v5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 17 Jun 2022 17:02:26 +0000 (10:02 -0700)]
Merge tag 'hwmon-for-v5.19-rc3' of git://git./linux/kernel/git/groeck/linux-staging

Pull hwmon fixes from Guenter Roeck:

 - Add missing lock protection in occ driver

 - Add missing comma in board name list in asus-ec-sensors driver

 - Fix devicetree bindings for ti,tmp401

* tag 'hwmon-for-v5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (asus-ec-sensors) add missing comma in board name list.
  hwmon: (occ) Lock mutex in shutdown to prevent race with occ_active
  dt-bindings: hwmon: ti,tmp401: Drop 'items' from 'ti,n-factor' property

2 years agoMerge tag 'linux-watchdog-5.19-rc3' of git://www.linux-watchdog.org/linux-watchdog
Linus Torvalds [Fri, 17 Jun 2022 17:00:25 +0000 (10:00 -0700)]
Merge tag 'linux-watchdog-5.19-rc3' of git://linux-watchdog.org/linux-watchdog

Pull watchdog fix from Wim Van Sebroeck:
 "Add missing MODULE_LICENSE in gxp driver"

* tag 'linux-watchdog-5.19-rc3' of git://www.linux-watchdog.org/linux-watchdog:
  watchdog: gxp: Add missing MODULE_LICENSE

2 years agoMerge tag 'v5.19-p2' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Linus Torvalds [Fri, 17 Jun 2022 15:27:27 +0000 (08:27 -0700)]
Merge tag 'v5.19-p2' of git://git./linux/kernel/git/herbert/crypto-2.6

Pull crypto fix from Herbert Xu:
 "This fixes a potential build failure when CRYPTO=m"

* tag 'v5.19-p2' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: memneq - move into lib/

2 years agoMerge tag 'char-misc-5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregk...
Linus Torvalds [Fri, 17 Jun 2022 14:58:39 +0000 (07:58 -0700)]
Merge tag 'char-misc-5.19-rc3' of git://git./linux/kernel/git/gregkh/char-misc

Pull char/misc driver fixes from Greg KH:
 "Here are some small char/misc driver fixes for 5.19-rc3 that resolve
  some reported issues.

  They include:

   - mei driver fixes

   - comedi driver fix

   - rtsx build warning fix

   - fsl-mc-bus driver fix

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'char-misc-5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  eeprom: at25: Split reads into chunks and cap write size
  misc: atmel-ssc: Fix IRQ check in ssc_probe
  char: lp: remove redundant initialization of err

2 years agoMerge tag 'staging-5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Fri, 17 Jun 2022 14:55:24 +0000 (07:55 -0700)]
Merge tag 'staging-5.19-rc3' of git://git./linux/kernel/git/gregkh/staging

Pull staging driver fixes from Greg KH:
 "Here are some small staging driver fixes for 5.19-rc3 that resolve
  reported issues:

   - remove visorbus.h which was forgotten in the -rc1 merge where the
     code that used it was removed

   - olpc_dcon: mark as broken to allow the DRM developers to evolve the
     fbdev api properly without having to deal with this obsolete
     driver. It will be removed soon if no one steps up to adopt it and
     fix the issues with it.

   - rtl8723bs driver fix

   - r8188eu driver fix to resolve many reports of the driver being
     broken with -rc1.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'staging-5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  staging: Also remove the Unisys visorbus.h
  staging: rtl8723bs: Allocate full pwep structure
  staging: olpc_dcon: mark driver as broken
  staging: r8188eu: Fix warning of array overflow in ioctl_linux.c
  staging: r8188eu: fix rtw_alloc_hwxmits error detection for now

2 years agoMerge tag 'tty-5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Linus Torvalds [Fri, 17 Jun 2022 14:52:43 +0000 (07:52 -0700)]
Merge tag 'tty-5.19-rc3' of git://git./linux/kernel/git/gregkh/tty

Pull tty/serial driver fixes from Greg KH:
 "Here are some small tty and serial driver fixes for 5.19-rc3 to
  resolve some reported problems:

   - 8250 lsr read bugfix

   - n_gsm line discipline allocation fix

   - qcom serial driver fix for reported lockups that happened in -rc1

   - goldfish tty driver fix

  All have been in linux-next for a while now with no reported issues"

* tag 'tty-5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  serial: 8250: Store to lsr_save_flags after lsr read
  tty: goldfish: Fix free_irq() on remove
  tty: serial: qcom-geni-serial: Implement start_rx callback
  serial: core: Introduce callback for start_rx and do stop_rx in suspend only if this callback implementation is present.
  tty: n_gsm: Debug output allocation must use GFP_ATOMIC

2 years agoMerge tag 'usb-5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Linus Torvalds [Fri, 17 Jun 2022 14:50:41 +0000 (07:50 -0700)]
Merge tag 'usb-5.19-rc3' of git://git./linux/kernel/git/gregkh/usb

Pull USB driver fixes from Greg KH:
 "Here are some small USB driver fixes and new device ids for 5.19-rc3

  They include:

   - new usb-serial driver device ids

   - usb gadget driver fixes for reported problems

   - cdnsp driver fix

   - dwc3 driver fixes for reported problems

   - dwc3 driver fix for merge problem that I caused in 5.18

   - xhci driver fixes

   - dwc2 memory leak fix

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'usb-5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  usb: gadget: f_fs: change ep->ep safe in ffs_epfile_io()
  usb: gadget: f_fs: change ep->status safe in ffs_epfile_io()
  xhci: Fix null pointer dereference in resume if xhci has only one roothub
  USB: fixup for merge issue with "usb: dwc3: Don't switch OTG -> peripheral if extcon is present"
  usb: cdnsp: Fixed setting last_trb incorrectly
  usb: gadget: u_ether: fix regression in setting fixed MAC address
  usb: gadget: lpc32xx_udc: Fix refcount leak in lpc32xx_udc_probe
  usb: dwc2: Fix memory leak in dwc2_hcd_init
  usb: dwc3: pci: Restore line lost in merge conflict resolution
  usb: dwc3: gadget: Fix IN endpoint max packet size allocation
  USB: serial: option: add support for Cinterion MV31 with new baseline
  USB: serial: io_ti: add Agilent E5805A support

2 years agoMerge branch 'rework/kthreads' into for-linus
Petr Mladek [Fri, 17 Jun 2022 14:36:48 +0000 (16:36 +0200)]
Merge branch 'rework/kthreads' into for-linus

2 years agodocs/zh_CN/LoongArch: Fix notes rendering by using reST directives
Yanteng Si [Fri, 17 Jun 2022 12:47:55 +0000 (20:47 +0800)]
docs/zh_CN/LoongArch: Fix notes rendering by using reST directives

Notes are better expressed with reST admonitions.

Fixes: f23b22599f8e ("Documentation/zh_CN: Add basic LoongArch documentations")
Reviewed-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2 years agodocs/LoongArch: Fix notes rendering by using reST directives
Yanteng Si [Fri, 17 Jun 2022 12:47:54 +0000 (20:47 +0800)]
docs/LoongArch: Fix notes rendering by using reST directives

Notes are better expressed with reST admonitions.

Fixes: 0ea8ce61cb2c ("Documentation: LoongArch: Add basic documentations")
Reviewed-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2 years agoLoongArch: vmlinux.lds.S: Add missing ELF_DETAILS
Youling Tang [Mon, 13 Jun 2022 10:54:12 +0000 (18:54 +0800)]
LoongArch: vmlinux.lds.S: Add missing ELF_DETAILS

Commit c604abc3f6e ("vmlinux.lds.h: Split ELF_DETAILS from STABS_DEBUG")
splits ELF_DETAILS from STABS_DEBUG, resulting in missing ELF_DETAILS
information in LoongArch architecture, so add it.

Fixes: c604abc3f6e ("vmlinux.lds.h: Split ELF_DETAILS from STABS_DEBUG")
Signed-off-by: Youling Tang <tangyouling@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2 years agoio_uring: recycle provided buffer if we punt to io-wq
Jens Axboe [Fri, 17 Jun 2022 12:24:26 +0000 (06:24 -0600)]
io_uring: recycle provided buffer if we punt to io-wq

io_arm_poll_handler() will recycle the buffer appropriately if we end
up arming poll (or if we're ready to retry), but not for the io-wq case
if we have attempted poll first.

Explicitly recycle the buffer to avoid both hanging on to it too long,
but also to avoid multiple reads grabbing the same one. This can happen
for ring mapped buffers, since it hasn't necessarily been committed.

Fixes: c7fb19428d67 ("io_uring: add support for ring mapped supplied buffers")
Link: https://github.com/axboe/liburing/issues/605
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2 years agoMerge tag 'drm-fixes-2022-06-17' of git://anongit.freedesktop.org/drm/drm
Linus Torvalds [Fri, 17 Jun 2022 04:39:51 +0000 (21:39 -0700)]
Merge tag 'drm-fixes-2022-06-17' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "Regular drm fixes for rc3. Nothing too serious, i915, amdgpu and
  exynos all have a few small driver fixes, and two ttm fixes, and one
  compiler warning.

  atomic:
   - fix spurious compiler warning

  ttm:
   - add NULL ptr check in swapout code
   - fix bulk move handling

  i915:
   - Fix page fault on error state read
   - Fix memory leaks in per-gt sysfs
   - Fix multiple fence handling
   - Remove accidental static from a local variable

  amdgpu:
   - Fix regression in GTT size reporting
   - OLED backlight fix

  exynos:
   - Check a null pointer instead of IS_ERR()
   - Rework initialization code of Exynos MIC driver"

* tag 'drm-fixes-2022-06-17' of git://anongit.freedesktop.org/drm/drm:
  drm/amd/display: Cap OLED brightness per max frame-average luminance
  drm/amdgpu: Fix GTT size reporting in amdgpu_ioctl
  drm/exynos: mic: Rework initialization
  drm/exynos: fix IS_ERR() vs NULL check in probe
  drm/ttm: fix bulk move handling v2
  drm/i915/uc: remove accidental static from a local variable
  drm/i915: Individualize fences before adding to dma_resv obj
  drm/i915/gt: Fix memory leaks in per-gt sysfs
  drm/i915/reset: Fix error_state_read ptr + offset use
  drm/ttm: fix missing NULL check in ttm_device_swapout
  drm/atomic: fix warning of unused variable

2 years agoMerge tag 'exynos-drm-fixes-v5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel...
Dave Airlie [Fri, 17 Jun 2022 01:32:22 +0000 (11:32 +1000)]
Merge tag 'exynos-drm-fixes-v5.19-rc3' of git://git./linux/kernel/git/daeinki/drm-exynos into drm-fixes

two regression fixups
- Check a null pointer instead of IS_ERR().
- Rework initialization code of Exynos MIC driver.

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Inki Dae <inki.dae@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220614141336.88614-1-inki.dae@samsung.com
2 years agoMerge tag 'amd-drm-fixes-5.19-2022-06-15' of https://gitlab.freedesktop.org/agd5f...
Dave Airlie [Fri, 17 Jun 2022 01:17:37 +0000 (11:17 +1000)]
Merge tag 'amd-drm-fixes-5.19-2022-06-15' of https://gitlab.freedesktop.org/agd5f/linux into drm-fixes

amd-drm-fixes-5.19-2022-06-15:

amdgpu:
- Fix regression in GTT size reporting
- OLED backlight fix

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220615205609.28763-1-alexander.deucher@amd.com
2 years agoMerge tag 'drm-intel-fixes-2022-06-16' of git://anongit.freedesktop.org/drm/drm-intel...
Dave Airlie [Fri, 17 Jun 2022 00:24:42 +0000 (10:24 +1000)]
Merge tag 'drm-intel-fixes-2022-06-16' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes

drm/i915 fixes for v5.19-rc3:
- Fix page fault on error state read
- Fix memory leaks in per-gt sysfs
- Fix multiple fence handling
- Remove accidental static from a local variable

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/8735g5xd25.fsf@intel.com
2 years agodm mirror log: round up region bitmap size to BITS_PER_LONG
Mikulas Patocka [Thu, 16 Jun 2022 17:28:57 +0000 (13:28 -0400)]
dm mirror log: round up region bitmap size to BITS_PER_LONG

The code in dm-log rounds up bitset_size to 32 bits. It then uses
find_next_zero_bit_le on the allocated region. find_next_zero_bit_le
accesses the bitmap using unsigned long pointers. So, on 64-bit
architectures, it may access 4 bytes beyond the allocated size.

Fix this bug by rounding up bitset_size to BITS_PER_LONG.

This bug was found by running the lvm2 testsuite with kasan.

Fixes: 29121bd0b00e ("[PATCH] dm mirror log: bitset_size fix")
Cc: stable@vger.kernel.org
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
2 years agodm: fix narrow race for REQ_NOWAIT bios being issued despite no support
Mikulas Patocka [Thu, 16 Jun 2022 18:14:39 +0000 (14:14 -0400)]
dm: fix narrow race for REQ_NOWAIT bios being issued despite no support

Starting with the commit 63a225c9fd20, device mapper has an optimization
that it will take cheaper table lock (dm_get_live_table_fast instead of
dm_get_live_table) if the bio has REQ_NOWAIT. The bios with REQ_NOWAIT
must not block in the target request routine, if they did, we would be
blocking while holding rcu_read_lock, which is prohibited.

The targets that are suitable for REQ_NOWAIT optimization (and that don't
block in the map routine) have the flag DM_TARGET_NOWAIT set. Device
mapper will test if all the targets and all the devices in a table
support nowait (see the function dm_table_supports_nowait) and it will set
or clear the QUEUE_FLAG_NOWAIT flag on its request queue according to
this check.

There's a test in submit_bio_noacct: "if ((bio->bi_opf & REQ_NOWAIT) &&
!blk_queue_nowait(q)) goto not_supported" - this will make sure that
REQ_NOWAIT bios can't enter a request queue that doesn't support them.

This mechanism works to prevent REQ_NOWAIT bios from reaching dm targets
that don't support the REQ_NOWAIT flag (and that may block in the map
routine) - except that there is a small race condition:

submit_bio_noacct checks if the queue has the QUEUE_FLAG_NOWAIT without
holding any locks. Immediatelly after this check, the device mapper table
may be reloaded with a table that doesn't support REQ_NOWAIT (for example,
if we start moving the logical volume or if we activate a snapshot).
However the REQ_NOWAIT bio that already passed the check in
submit_bio_noacct would be sent to device mapper, where it could be
redirected to a dm target that doesn't support REQ_NOWAIT - the result is
sleeping while we hold rcu_read_lock.

In order to fix this race, we double-check if the target supports
REQ_NOWAIT while we hold the table lock (so that the table can't change
under us).

Fixes: 563a225c9fd2 ("dm: introduce dm_{get,put}_live_table_bio called from dm_submit_bio")
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
2 years agodm: fix use-after-free in dm_put_live_table_bio
Mikulas Patocka [Thu, 16 Jun 2022 17:21:27 +0000 (13:21 -0400)]
dm: fix use-after-free in dm_put_live_table_bio

dm_put_live_table_bio is called from the end of dm_submit_bio.
However, at this point, the bio may be already finished and the caller
may have freed the bio. Consequently, dm_put_live_table_bio accesses
the stale "bio" pointer.

Fix this bug by loading the bi_opf value and passing it to
dm_get_live_table_bio and dm_put_live_table_bio instead of the bio.

This bug was found by running the lvm2 testsuite with kasan.

Fixes: 563a225c9fd2 ("dm: introduce dm_{get,put}_live_table_bio called from dm_submit_bio")
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
2 years agoMerge tag 'drm-misc-fixes-2022-06-16' of git://anongit.freedesktop.org/drm/drm-misc...
Dave Airlie [Thu, 16 Jun 2022 23:31:22 +0000 (09:31 +1000)]
Merge tag 'drm-misc-fixes-2022-06-16' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes

Two fixes for TTM, one for a NULL pointer dereference and one to make sure
the buffer is pinned prior to a bulk move, and a fix for a spurious
compiler warning.

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20220616072519.qwrsefsemejefowu@houat