platform/kernel/linux-rpi.git
2 years agospi: microchip-core: fix UAF in mchp_corespi_remove()
Yang Yingliang [Wed, 13 Jul 2022 02:56:55 +0000 (10:56 +0800)]
spi: microchip-core: fix UAF in mchp_corespi_remove()

When using devm_spi_register_master(), the unregister function will
be called in devres_release_all() which is called after ->remove(),
so remove spi_unregister_master() andspi_master_put().

Fixes: 9ac8d17694b6 ("spi: add support for microchip fpga spi controllers")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20220713025657.3524506-2-yangyingliang@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: remove duplicate parameters check in acpi_spi_add_resource()
Andy Shevchenko [Sat, 9 Jul 2022 00:07:09 +0000 (03:07 +0300)]
spi: remove duplicate parameters check in acpi_spi_add_resource()

The acpi_spi_add_resource() is never called with ctrl == NULL and
index == -1. The only caller already performs the check. Hence
remove the duplication from the acpi_spi_add_resource().

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20220709000709.35622-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: propagate error code to the caller of acpi_spi_device_alloc()
Andy Shevchenko [Sat, 9 Jul 2022 00:07:08 +0000 (03:07 +0300)]
spi: propagate error code to the caller of acpi_spi_device_alloc()

Since acpi_spi_device_alloc() has been designed to return an error
pointer we may now properly propagate error codes to the caller of
it. It helps debugging a lot.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20220709000709.35622-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: Return deferred probe error when controller isn't yet available
Andy Shevchenko [Sat, 9 Jul 2022 21:29:56 +0000 (00:29 +0300)]
spi: Return deferred probe error when controller isn't yet available

If the controller is not available, it might be in the future and
we would like to re-probe the peripheral again. For that purpose
return deferred probe.

BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=215993
Fixes: 87e59b36e5e2 ("spi: Support selection of the index of the ACPI Spi Resource before alloc")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20220709212956.25530-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: AMD SPI controller driver bug fix and cleanups
Mark Brown [Wed, 6 Jul 2022 19:37:03 +0000 (20:37 +0100)]
spi: AMD SPI controller driver bug fix and cleanups

Merge series from Cristian Ciocaltea <cristian.ciocaltea@collabora.com>:

This patch series addresses an issue in the spi-amd driver and, while
there, performs some additional cleanups, like simplifying the error
handling in the probe function and removing an unused struct member.

For improving code readability, it also adds some kernel-doc comments.

2 years agospi: amd: Add struct and enum kernel-doc comments
Cristian Ciocaltea [Wed, 6 Jul 2022 10:06:26 +0000 (13:06 +0300)]
spi: amd: Add struct and enum kernel-doc comments

Provide documentation comments in the kernel-doc format
for enum amd_spi_versions and struct amd_spi.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Link: https://lore.kernel.org/r/20220706100626.1234731-6-cristian.ciocaltea@collabora.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: amd: Drop io_base_addr member from struct amd_spi
Cristian Ciocaltea [Wed, 6 Jul 2022 10:06:25 +0000 (13:06 +0300)]
spi: amd: Drop io_base_addr member from struct amd_spi

The io_base_addr member of struct amd_spi is not referenced anywhere
in the driver implementation and there is no indication that it could
be used in the future, hence drop it.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Link: https://lore.kernel.org/r/20220706100626.1234731-5-cristian.ciocaltea@collabora.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: amd: Make use of dev_err_probe()
Cristian Ciocaltea [Wed, 6 Jul 2022 10:06:24 +0000 (13:06 +0300)]
spi: amd: Make use of dev_err_probe()

Simplify the error handling in probe function by switching from
dev_err() to dev_err_probe().

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Link: https://lore.kernel.org/r/20220706100626.1234731-4-cristian.ciocaltea@collabora.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: amd: Make use of devm_spi_alloc_master()
Cristian Ciocaltea [Wed, 6 Jul 2022 10:06:23 +0000 (13:06 +0300)]
spi: amd: Make use of devm_spi_alloc_master()

Make use of the devm variant of spi_alloc_master() in order to cleanup
and simplify the error handling in the probe function by getting rid
of the goto statements.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Link: https://lore.kernel.org/r/20220706100626.1234731-3-cristian.ciocaltea@collabora.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: amd: Limit max transfer and message size
Cristian Ciocaltea [Wed, 6 Jul 2022 10:06:22 +0000 (13:06 +0300)]
spi: amd: Limit max transfer and message size

Enabling the SPI CS35L41 audio codec driver for Steam Deck [1]
revealed a problem with the current AMD SPI controller driver
implementation, consisting of an unrecoverable system hang.

The issue can be prevented if we ensure the max transfer size
and the max message size do not exceed the FIFO buffer size.

According to the implementation of the downstream driver, the
AMD SPI controller is not able to handle more than 70 bytes per
transfer, which corresponds to the size of the FIFO buffer.

Hence, let's fix this by setting the SPI limits mentioned above.

[1] https://lore.kernel.org/r/20220621213819.262537-1-cristian.ciocaltea@collabora.com

Reported-by: Anastasios Vacharakis <vacharakis@o2mail.de>
Fixes: bbb336f39efc ("spi: spi-amd: Add AMD SPI controller driver support")
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Link: https://lore.kernel.org/r/20220706100626.1234731-2-cristian.ciocaltea@collabora.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: dt-bindings: zynqmp-qspi: add missing 'required'
Krzysztof Kozlowski [Mon, 4 Jul 2022 13:06:18 +0000 (15:06 +0200)]
spi: dt-bindings: zynqmp-qspi: add missing 'required'

During the conversion the bindings lost list of required properties.

Fixes: c58db2abb19f ("spi: convert Xilinx Zynq UltraScale+ MPSoC GQSPI bindings to YAML")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/20220704130618.199231-2-krzysztof.kozlowski@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: dt-bindings: cadence: add missing 'required'
Krzysztof Kozlowski [Mon, 4 Jul 2022 13:06:17 +0000 (15:06 +0200)]
spi: dt-bindings: cadence: add missing 'required'

During the conversion the bindings lost list of required properties.

Fixes: aa7968682a2b ("spi: convert Cadence SPI bindings to YAML")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/20220704130618.199231-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: dt-bindings: dw-apb-ssi: update spi-{r,t}x-bus-width
Conor Dooley [Wed, 29 Jun 2022 18:43:33 +0000 (19:43 +0100)]
spi: dt-bindings: dw-apb-ssi: update spi-{r,t}x-bus-width

Most users of dw-apb-ssi use spi-{r,t}x-bus-width of 1, however the
Canaan k210 is wired up for a width of 4.
Quoting Serge:
The modern DW APB SSI controllers of v.4.* and newer also support the
enhanced SPI Modes too (Dual, Quad and Octal). Since the IP-core
version is auto-detected at run-time there is no way to create a
DT-schema correctly constraining the Rx/Tx SPI bus widths.
/endquote

As such, drop the restriction on only supporting a bus width of 1.

Link: https://lore.kernel.org/all/20220620205654.g7fyipwytbww5757@mobilestation/
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Serge Semin <fancer.lancer@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Tested-by: Niklas Cassel <niklas.cassel@wdc.com>
Link: https://lore.kernel.org/r/20220629184343.3438856-5-mail@conchuod.ie
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agoFix some coding style issues
Mark Brown [Thu, 30 Jun 2022 14:16:59 +0000 (15:16 +0100)]
Fix some coding style issues

Merge series from David Jander <david@protonic.nl>:

This series fixes some coding style issues. No functional change.

2 years agospi: spi.c: Remove redundant else block
David Jander [Wed, 29 Jun 2022 14:25:19 +0000 (16:25 +0200)]
spi: spi.c: Remove redundant else block

Reported-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: David Jander <david@protonic.nl>
Link: https://lore.kernel.org/r/20220629142519.3985486-4-david@protonic.nl
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: spi.c: Fix comment style
David Jander [Wed, 29 Jun 2022 14:25:18 +0000 (16:25 +0200)]
spi: spi.c: Fix comment style

Capitalize first word in comment where appropriate and add
parentheses to function names.

Reported-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: David Jander <david@protonic.nl>
Link: https://lore.kernel.org/r/20220629142519.3985486-3-david@protonic.nl
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: spi.c: White-space fix in __spi_pump_messages()
David Jander [Wed, 29 Jun 2022 14:25:17 +0000 (16:25 +0200)]
spi: spi.c: White-space fix in __spi_pump_messages()

Reported-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: David Jander <david@protonic.nl>
Link: https://lore.kernel.org/r/20220629142519.3985486-2-david@protonic.nl
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: pxa2xx: Add support for Intel Meteor Lake-P
Jarkko Nikula [Thu, 30 Jun 2022 07:33:05 +0000 (10:33 +0300)]
spi: pxa2xx: Add support for Intel Meteor Lake-P

Add support for LPSS SPI on Intel Meteor Lake-P. It has three
controllers each having two chip selects.

This squashes a fix from Ap, Kamal <kamal.ap@intel.com> fixing incorrect
PCI ID of 3rd controller.

Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20220630073305.632850-1-jarkko.nikula@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi support for Exynos Auto v9 SoC
Mark Brown [Wed, 29 Jun 2022 14:43:11 +0000 (15:43 +0100)]
spi support for Exynos Auto v9 SoC

Merge series from Chanho Park <chanho61.park@samsung.com>:

Add to support Exynos Auto v9 SoC's spi. By supporting USI(Universal
Serial Interface) mode, the SoC can support up to 12 spi ports. Thus, we
need to increase MAX_SPI_PORTS from 6 to 12. The spi of the SoC can
support loopback mode unlike previous exynos SoCs. To separate the
feature, we need to add .has_loopback to the s3c64xx_spi_port_config.
Furthermore, it uses 4 as the default internal clock divider. We also
need to clk_div field of the structure and assign "2" as the default
value to the existing SoC's port config.
Device tree definitions of exynosautov9-spi will be added in separated
patchset to include usi(i2c/uart/spi) nodes all together.

2 years agospi: intel: Add support for Intel Meteor Lake-P SPI serial flash
Mika Westerberg [Wed, 29 Jun 2022 11:34:03 +0000 (14:34 +0300)]
spi: intel: Add support for Intel Meteor Lake-P SPI serial flash

Intel Meteor Lake-P has the same SPI serial flash controller as Alder
Lake-P. Add Meteor Lake-P PCI ID to the driver list of supported
devices.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Link: https://lore.kernel.org/r/20220629113403.79942-1-mika.westerberg@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: s3c64xx: define exynosautov9 compatible
Chanho Park [Wed, 29 Jun 2022 10:23:03 +0000 (19:23 +0900)]
spi: s3c64xx: define exynosautov9 compatible

Define "samsung,exynosautov9-spi" for Exynos Auto v9's spi.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Andi Shyti <andi@etezian.org>
Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Link: https://lore.kernel.org/r/20220629102304.65712-4-chanho61.park@samsung.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: s3c64xx: add spi port configuration for Exynos Auto v9 SoC
Chanho Park [Wed, 29 Jun 2022 10:23:04 +0000 (19:23 +0900)]
spi: s3c64xx: add spi port configuration for Exynos Auto v9 SoC

Add exynosautov9 spi port configuration. It supports up to 12 spis so
MAX_SPI_PORTS should be increased from 6 to 12.
It has DIV_4 as the default internal clock divider and an internal
loopback mode to run a loopback test.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Andi Shyti <andi@etezian.org>
Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Link: https://lore.kernel.org/r/20220629102304.65712-5-chanho61.park@samsung.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: s3c64xx: support custom value of internal clock divider
Chanho Park [Wed, 29 Jun 2022 10:23:02 +0000 (19:23 +0900)]
spi: s3c64xx: support custom value of internal clock divider

Modern exynos SoCs such as Exynos Auto v9 have different internal clock
divider, for example "4". To support this internal value, this adds
clk_div of the s3c64xx_spi_port_config and assign "2" as the default
value to existing s3c64xx_spi_port_config.

Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Reviewed-by: Andi Shyti <andi@etezian.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220629102304.65712-3-chanho61.park@samsung.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: s3c64xx: support loopback mode
Chanho Park [Wed, 29 Jun 2022 10:23:01 +0000 (19:23 +0900)]
spi: s3c64xx: support loopback mode

Modern exynos SoCs can support self loopback mode via setting BIT(3) of
MODE_CFG register. Previous SoCs don't have the bit so we need to add
has_loopback field in the s3c64xx_spi_port_config. Exynos Auto v9 SoC
has the bit and it will define the field to "true".
When it is set, SPI_LOOP mode will be marked.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Andi Shyti <andi@etezian.org>
Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Link: https://lore.kernel.org/r/20220629102304.65712-2-chanho61.park@samsung.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agoOptimize spi_sync path
Mark Brown [Tue, 28 Jun 2022 10:30:13 +0000 (11:30 +0100)]
Optimize spi_sync path

Merge series from David Jander <david@protonic.nl>:

These patches optimize the spi_sync call for the common case that the
worker thread is idle and the queue is empty. It also opens the
possibility to potentially further optimize the async path also, since
it doesn't need to take into account the direct sync path anymore.

As an example for the performance gain, on an i.MX8MM SoC with a SPI CAN
controller attached (MCP2518FD), the time the interrupt line stays
active (which corresponds roughly with the time it takes to send 3
relatively short consecutive spi_sync messages) is reduced from 98us to
only 72us by this patch.

A note about message ordering:

This patch series should not change the behavior of message ordering when
coming from the same context. This means that if a client driver issues
one or more spi_async() messages immediately followed by a spi_sync()
message in the same context, it can still rely on these messages being
sent out in the order they were fired.

2 years agospi: s3c64xx: move dma_release_channel to unprepare
Chanho Park [Mon, 27 Jun 2022 01:38:45 +0000 (10:38 +0900)]
spi: s3c64xx: move dma_release_channel to unprepare

This fixes the sequence of dma_release_channel.
Since commit f52b03c70744 ("spi: s3c64xx: requests spi-dma channel only
during data transfer"),
dma_release_channel has been located in the s3c64xx_spi_transfer_one
but this makes invalid return of can_dma callback.
__spi_unmap_msg will check whether the request is requested by dma or
not via can_dma callback. When it is calling to check it, the channels
will be already released at the end of s3c64xx_spi_transfer_one so the
callback function will return always "false". So, they can't be unmapped
from __spi_unmap_msg call. To fix this, we need to add
unprepare_transfer_hardware callback and move the dma_release_channel
from s3c64xx_spi_transfer_one to there.

Fixes: f52b03c70744 ("spi: s3c64xx: requests spi-dma channel only during data transfer")
Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Link: https://lore.kernel.org/r/20220627013845.138350-1-chanho61.park@samsung.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: synquacer: Add missing clk_disable_unprepare()
Guo Mengqi [Fri, 24 Jun 2022 00:56:14 +0000 (08:56 +0800)]
spi: synquacer: Add missing clk_disable_unprepare()

Add missing clk_disable_unprepare() in synquacer_spi_resume().

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Guo Mengqi <guomengqi3@huawei.com>
Link: https://lore.kernel.org/r/20220624005614.49434-1-guomengqi3@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: opportunistically skip ctlr->cur_msg_completion
David Jander [Tue, 21 Jun 2022 06:12:34 +0000 (08:12 +0200)]
spi: opportunistically skip ctlr->cur_msg_completion

There are only a few drivers that do not call
spi_finalize_current_message() in the context of transfer_one_message(),
and even for those cases the completion ctlr->cur_msg_completion is not
needed always. The calls to complete() and wait_for_completion() each
take a spin-lock, which is costly. This patch makes it possible to avoid
those calls in the big majority of cases, by introducing two flags that
with the help of ordering via barriers can avoid using the completion
safely. In case of a race with the context calling
spi_finalize_current_message(), the scheme errs on the safe side and takes
the completion.
The impact of this patch is worth the effort: On a i.MX8MM SoC, the time
the SPI bus is idle between two consecutive calls to spi_sync(), is
reduced from 19.6us to 16.8us... roughly 15%.

Signed-off-by: David Jander <david@protonic.nl>
Link: https://lore.kernel.org/r/20220621061234.3626638-12-david@protonic.nl
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: Ensure the io_mutex is held until spi_finalize_current_message()
David Jander [Tue, 21 Jun 2022 06:12:33 +0000 (08:12 +0200)]
spi: Ensure the io_mutex is held until spi_finalize_current_message()

This patch introduces a completion that is completed in
spi_finalize_current_message() and waited for in
__spi_pump_transfer_message(). This way all manipulation of ctlr->cur_msg
is done with the io_mutex held and strictly ordered:
__spi_pump_transfer_message() will not return until
spi_finalize_current_message() is done using ctlr->cur_msg, and its
calling context is only touching ctlr->cur_msg after returning.
Due to this, we can safely drop the spin-locks around ctlr->cur_msg.

Signed-off-by: David Jander <david@protonic.nl>
Link: https://lore.kernel.org/r/20220621061234.3626638-11-david@protonic.nl
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: Set ctlr->cur_msg also in the sync transfer case
David Jander [Tue, 21 Jun 2022 06:12:32 +0000 (08:12 +0200)]
spi: Set ctlr->cur_msg also in the sync transfer case

Some drivers rely on this to point to the currently processed message, so
set this here also.

Signed-off-by: David Jander <david@protonic.nl>
Link: https://lore.kernel.org/r/20220621061234.3626638-10-david@protonic.nl
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: Remove unneeded READ_ONCE for ctlr->busy flag
David Jander [Tue, 21 Jun 2022 06:12:31 +0000 (08:12 +0200)]
spi: Remove unneeded READ_ONCE for ctlr->busy flag

Now this flag is written entirely in the mutex, so no need for READ_ONCE

Signed-off-by: David Jander <david@protonic.nl>
Link: https://lore.kernel.org/r/20220621061234.3626638-9-david@protonic.nl
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: Remove the now unused ctlr->idling flag
David Jander [Tue, 21 Jun 2022 06:12:30 +0000 (08:12 +0200)]
spi: Remove the now unused ctlr->idling flag

The ctlr->idling flag is never checked now, so we don't need to set it
either.

Signed-off-by: David Jander <david@protonic.nl>
Link: https://lore.kernel.org/r/20220621061234.3626638-8-david@protonic.nl
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: Remove check for idling in __spi_pump_messages()
David Jander [Tue, 21 Jun 2022 06:12:29 +0000 (08:12 +0200)]
spi: Remove check for idling in __spi_pump_messages()

Since the whole idling transition is locked by the io_mutex now, there is
no need to check this flag anymore.

Signed-off-by: David Jander <david@protonic.nl>
Link: https://lore.kernel.org/r/20220621061234.3626638-7-david@protonic.nl
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: Remove check for controller idling in spi sync path
David Jander [Tue, 21 Jun 2022 06:12:28 +0000 (08:12 +0200)]
spi: Remove check for controller idling in spi sync path

Now that the idling flag is wholly behind the io_mutex, this broken piece
of code can be safely removed.

Signed-off-by: David Jander <david@protonic.nl>
Link: https://lore.kernel.org/r/20220621061234.3626638-6-david@protonic.nl
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: __spi_pump_messages: Consolidate spin_unlocks to goto target
David Jander [Tue, 21 Jun 2022 06:12:27 +0000 (08:12 +0200)]
spi: __spi_pump_messages: Consolidate spin_unlocks to goto target

Signed-off-by: David Jander <david@protonic.nl>
Link: https://lore.kernel.org/r/20220621061234.3626638-5-david@protonic.nl
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: Lock controller idling transition inside the io_mutex
David Jander [Tue, 21 Jun 2022 06:12:26 +0000 (08:12 +0200)]
spi: Lock controller idling transition inside the io_mutex

This way, the spi sync path does not need to deal with the idling
transition.

Signed-off-by: David Jander <david@protonic.nl>
Link: https://lore.kernel.org/r/20220621061234.3626638-4-david@protonic.nl
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: Don't use the message queue if possible in spi_sync
David Jander [Tue, 21 Jun 2022 06:12:25 +0000 (08:12 +0200)]
spi: Don't use the message queue if possible in spi_sync

The interaction with the controller message queue and its corresponding
auxiliary flags and variables requires the use of the queue_lock which is
costly. Since spi_sync will transfer the complete message anyway, and not
return until it is finished, there is no need to put the message into the
queue if the queue is empty. This can save a lot of overhead.

As an example of how significant this is, when using the MCP2518FD SPI CAN
controller on a i.MX8MM SoC, the time during which the interrupt line
stays active (during 3 relatively short spi_sync messages), is reduced
from 98us to 72us by this patch.

Signed-off-by: David Jander <david@protonic.nl>
Link: https://lore.kernel.org/r/20220621061234.3626638-3-david@protonic.nl
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: Move ctlr->cur_msg_prepared to struct spi_message
David Jander [Tue, 21 Jun 2022 06:12:24 +0000 (08:12 +0200)]
spi: Move ctlr->cur_msg_prepared to struct spi_message

This enables the possibility to transfer a message that is not at the
current tip of the async message queue.
This is in preparation of the next patch(es) which enable spi_sync messages
to skip the queue altogether.

Signed-off-by: David Jander <david@protonic.nl>
Link: https://lore.kernel.org/r/20220621061234.3626638-2-david@protonic.nl
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: mpc52xx-psc: Switch to using core message queue
Mark Brown [Mon, 13 Jun 2022 12:19:46 +0000 (13:19 +0100)]
spi: mpc52xx-psc: Switch to using core message queue

We deprecated open coding of the transfer queue back in 2017 so it's high
time we finished up converting drivers to use the standard message queue
code. The mpc52xx-psc driver is fairly straightforward so convert to use
transfer_one_message(), it looks like the driver would be a good fit for
transfer_one() with a little bit of updating but this smaller change seems
safer.

The driver seems like a good candidate for transfer_one() but the chip
select function is actually doing rather more than just updating the chip
select and both transfer_one() and transfer_one_message() are current APIs
so leave that refactoring for another day, ideally by someone with the
hardware.

Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20220613121946.136193-1-broonie@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: sh: Switch to using core message queue
Mark Brown [Fri, 10 Jun 2022 15:46:49 +0000 (16:46 +0100)]
spi: sh: Switch to using core message queue

We deprecated open coding of the transfer queue back in 2017 so it's high
time we finished up converting drivers to use the standard message queue
code. The SH driver is fairly straightforward so convert to use
transfer_one_message(), it looks like the driver would be a good fit for
transfer_one() with a little bit of updating but this smaller change seems
safer.

I'm not actually clear how the driver worked robustly previously, it
clears SSA and CR1 when queueing a transfer which looks like it would
interfere with any running transfer. This clearing has been moved to the
start of the message transfer function.

I'm also unclear how exactly the chip select is managed with this driver.

Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20220610154649.1707851-1-broonie@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: dt-bindings: samsung: Add Exynos4210 SPI
Krzysztof Kozlowski [Sun, 26 Jun 2022 11:28:38 +0000 (13:28 +0200)]
spi: dt-bindings: samsung: Add Exynos4210 SPI

Document samsung,exynos4210-spi compatible which is already used on
several Exynos SoCs.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Chanho Park <chanho61.park@samsung.com>
Link: https://lore.kernel.org/r/20220626112838.19281-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: dw: Add deferred DMA-channels setup support
Serge Semin [Fri, 24 Jun 2022 21:06:23 +0000 (00:06 +0300)]
spi: dw: Add deferred DMA-channels setup support

Currently if the source DMA device isn't ready to provide the channels
capable of the SPI DMA transfers, the DW SSI controller will be registered
with no DMA support. It isn't right since all what the driver needs to do
is to postpone the probe procedure until the DMA device is ready. Let's
fix that in the framework of the DWC SSI generic DMA implementation. First
we need to use the dma_request_chan() method instead of the
dma_request_slave_channel() function, because the later one is deprecated
and most importantly doesn't return the failure cause but the
NULL-pointer. Second we need to stop the DW SSI controller probe procedure
if the -EPROBE_DEFER error is returned on the DMA initialization. The
procedure will resume later when the channels are ready to be requested.

Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20220624210623.6383-1-Sergey.Semin@baikalelectronics.ru
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: s3c64xx: constify fsd_spi_port_config
Krzysztof Kozlowski [Mon, 27 Jun 2022 09:45:41 +0000 (11:45 +0200)]
spi: s3c64xx: constify fsd_spi_port_config

All struct s3c64xx_spi_port_config should be const.

Fixes: 4ebb15a15799 ("spi: s3c64xx: Add spi port configuration for Tesla FSD SoC")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220627094541.95166-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: fsi: Increase timeout and ensure status is checked
Eddie James [Thu, 23 Jun 2022 14:05:47 +0000 (09:05 -0500)]
spi: fsi: Increase timeout and ensure status is checked

Only timeout after at least one iteration of checking the
status registers. In addition, increase the transfer timeout
to 1 second.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Link: https://lore.kernel.org/r/20220623140547.71762-1-eajames@linux.ibm.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: topcliff-pch: Use core message validation
Mark Brown [Wed, 15 Jun 2022 17:41:38 +0000 (18:41 +0100)]
spi: topcliff-pch: Use core message validation

The topcliff-pch driver requires TX and RX buffers on all transfers, open
coding checks for this. Remove those open coded checks and instead rely on
the core functionality, which has the added bonus that it will fix up any
transfers submitted by drivers as needed rather than erroring out.

Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20220615174138.4060912-1-broonie@kernel.org
2 years agospi: microchip-core: fix passing zero to PTR_ERR warning
Conor Dooley [Wed, 15 Jun 2022 14:20:29 +0000 (15:20 +0100)]
spi: microchip-core: fix passing zero to PTR_ERR warning

It is possible that the error case for devm_clk_get() returns NULL,
in which case zero will be passed to PTR_ERR() as shown by the Smatch
static checker warning:
drivers/spi/spi-microchip-core.c:557 mchp_corespi_probe()
warn: passing zero to 'PTR_ERR'

Remove the NULL check and carry on with a dummy clock in case of an
error. To avoid a potential div zero, abort calculating clkgen if
clk_get_rate(spi->clk) is zero.

Fixes: 9ac8d17694b6 ("spi: add support for microchip fpga spi controllers")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/linux-spi/20220615091633.GI2168@kadam/
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20220615142028.2991915-1-conor.dooley@microchip.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: core: Fix error code in spi_register_controller()
Dan Carpenter [Tue, 14 Jun 2022 12:09:17 +0000 (15:09 +0300)]
spi: core: Fix error code in spi_register_controller()

Return -ENOMEM if the allocation fails.  Don't return success.

Fixes: 6598b91b5ac3 ("spi: spi.c: Convert statistics to per-cpu u64_stats_t")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/Yqh6bdNYO2XNhPBa@kili
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: microchip-core: fix potentially incorrect return from probe
Conor Dooley [Tue, 14 Jun 2022 06:58:10 +0000 (07:58 +0100)]
spi: microchip-core: fix potentially incorrect return from probe

If platform_get_irqi() returns 0, the error case will be triggered but
probe() will return 0 rather than an error. Ape the other drivers using
this pattern and return -ENXIO.

Reported-by: Yang Li <yang.lee@linux.alibaba.com>
Link: https://lore.kernel.org/linux-spi/20220609055533.95866-2-yang.lee@linux.alibaba.com/
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Fixes: 9ac8d17694b6 ("spi: add support for microchip fpga spi controllers")
Link: https://lore.kernel.org/r/20220614065809.1969177-1-conor.dooley@microchip.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: tegra quad: Add Tegra Grace features
Mark Brown [Mon, 13 Jun 2022 17:23:40 +0000 (18:23 +0100)]
spi: tegra quad: Add Tegra Grace features

Merge series from Krishna Yarlagadda <kyarlagadda@nvidia.com>:

Add multiple chip select lines supported on Tegra 241

2 years agospi: spidev_test: Warn when the mode is not the requested mode
David Fries [Mon, 13 Jun 2022 05:39:41 +0000 (00:39 -0500)]
spi: spidev_test: Warn when the mode is not the requested mode

Print a warning if the device mode doesn't match the requested mode.
The user doesn't enter the mode in hex so it isn't obvious when
setting the mode succeeds that the mode isn't the requested mode.  The
kernel logs a message, it will be more visible if the test also prints
a warning.  I was testing --quad, which is unsupported, but doesn't
cause the mode request to fail.

Signed-off-by: David Fries <David@Fries.net>
Link: https://lore.kernel.org/r/YqbNnSGtWHe/GG7w@spacedout.fries.net
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: s3c64xx: set pointers to null using NULL rather than 0
Colin Ian King [Sun, 12 Jun 2022 20:34:28 +0000 (21:34 +0100)]
spi: s3c64xx: set pointers to null using NULL rather than 0

There are pointers being set to null using use. Use NULL instead.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Link: https://lore.kernel.org/r/20220612203428.2754823-1-colin.i.king@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: micro: fix unreasonable clk_prepare_enable() on error in mchp_corespi_probe()
Peng Wu [Sat, 11 Jun 2022 02:11:17 +0000 (02:11 +0000)]
spi: micro: fix unreasonable clk_prepare_enable() on error in mchp_corespi_probe()

Fix the unreasonable clk_prepare_enable() with clk_disable_unprepare()
before return from mchp_corespi_probe() in the error handling case.

Signed-off-by: Peng Wu <wupeng58@huawei.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20220611021117.40494-1-wupeng58@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: dt-bindings: Add compatible for Tegra241 QSPI
Krishna Yarlagadda [Tue, 7 Jun 2022 11:46:59 +0000 (17:16 +0530)]
spi: dt-bindings: Add compatible for Tegra241 QSPI

Add new compatible for Tegra241 QSPI controller which has
multiple chip select lines.

Signed-off-by: Krishna Yarlagadda <kyarlagadda@nvidia.com>
Link: https://lore.kernel.org/r/20220607114659.54314-4-kyarlagadda@nvidia.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: dt-bindings: split peripheral prods
Krishna Yarlagadda [Tue, 7 Jun 2022 11:46:58 +0000 (17:16 +0530)]
spi: dt-bindings: split peripheral prods

Move peripheral properties for Tegra QSPI controller to
nvidia,tegra210-quad-peripheral-props.yaml and add reference
to spi-peripheral-props.yaml file.

Signed-off-by: Krishna Yarlagadda <kyarlagadda@nvidia.com>
Link: https://lore.kernel.org/r/20220607114659.54314-3-kyarlagadda@nvidia.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: tegra210-quad: Multi-cs support
Krishna Yarlagadda [Tue, 7 Jun 2022 11:46:57 +0000 (17:16 +0530)]
spi: tegra210-quad: Multi-cs support

Tegra Grace and later chips can support upto 4 chip select lines
for QUAD SPI. Added new compatible for Tegra Grace.

Signed-off-by: Krishna Yarlagadda <kyarlagadda@nvidia.com>
Link: https://lore.kernel.org/r/20220607114659.54314-2-kyarlagadda@nvidia.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: atmel-quadspi: add runtime pm support
Mark Brown [Fri, 10 Jun 2022 15:57:39 +0000 (16:57 +0100)]
spi: atmel-quadspi: add runtime pm support

Merge series from Claudiu Beznea <claudiu.beznea@microchip.com>:

The following series adds runtime PM support for atmel-quadspi driver.
clk_disable()/clk_enable() is called on proper
runtime_suspend()/runtime_resume() ops. Along with it 2 minor cleanups
were added (patches 2/3, 3/3).

2 years agospi: Fix per-cpu stats access on 32 bit systems
David Jander [Thu, 9 Jun 2022 12:13:34 +0000 (14:13 +0200)]
spi: Fix per-cpu stats access on 32 bit systems

On 32 bit systems, the following kernel BUG is hit:

BUG: using smp_processor_id() in preemptible [00000000] code: swapper/0/1
caller is debug_smp_processor_id+0x18/0x24
CPU: 1 PID: 1 Comm: swapper/0 Not tainted 5.19.0-rc1-00001-g6ae0aec8a366 #181
Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
Backtrace:
 dump_backtrace from show_stack+0x20/0x24
 r7:81024ffd r6:00000000 r5:81024ffd r4:60000013
 show_stack from dump_stack_lvl+0x60/0x78
 dump_stack_lvl from dump_stack+0x14/0x1c
 r7:81024ffd r6:80f652de r5:80bec180 r4:819a2500
 dump_stack from check_preemption_disabled+0xc8/0xf0
 check_preemption_disabled from debug_smp_processor_id+0x18/0x24
 r8:8119b7e0 r7:81205534 r6:819f5c00 r5:819f4c00 r4:c083d724
 debug_smp_processor_id from __spi_sync+0x78/0x220
 __spi_sync from spi_sync+0x34/0x4c
 r10:bb7bf4e0 r9:c083d724 r8:00000007 r7:81a068c0 r6:822a83c0 r5:c083d724
 r4:819f4c00
 spi_sync from spi_mem_exec_op+0x338/0x370
 r5:000000b4 r4:c083d910
 spi_mem_exec_op from spi_nor_read_id+0x98/0xdc
 r10:bb7bf4e0 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:82358040
 r4:819f7c40
 spi_nor_read_id from spi_nor_detect+0x38/0x114
 r7:82358040 r6:00000000 r5:819f7c40 r4:819f7c40
 spi_nor_detect from spi_nor_scan+0x11c/0xbec
 r10:bb7bf4e0 r9:00000000 r8:00000000 r7:c083da4c r6:00000000 r5:00010101
 r4:819f7c40
 spi_nor_scan from spi_nor_probe+0x10c/0x2d0
 r10:bb7bf4e0 r9:bb7bf4d0 r8:00000000 r7:819f4c00 r6:00000000 r5:00000000
 r4:819f7c40

per-cpu access needs to be guarded against preemption.

Fixes: 6598b91b5ac3 ("spi: spi.c: Convert statistics to per-cpu u64_stats_t")
Reported-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: David Jander <david@protonic.nl>
Tested-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Link: https://lore.kernel.org/r/20220609121334.2984808-1-david@protonic.nl
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: sifive: add PM callbacks to support suspend/resume
Andy Chiu [Fri, 10 Jun 2022 07:44:59 +0000 (15:44 +0800)]
spi: sifive: add PM callbacks to support suspend/resume

The patch has been tested on Unmatched using pm_test. The Unmatched board
uses SD over SPI and it was tested by initiating S2RAM cycles for all
devices while reading/writing files at the same time. We found no dropped
connection to the card or corrupted filesystem during test cycles.

Signed-off-by: Andy Chiu <andy.chiu@sifive.com>
Reviewed-by: Greentime Hu <greentime.hu@sifive.com>
Link: https://lore.kernel.org/r/20220610074459.3261383-2-andy.chiu@sifive.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: atmel-quadspi: align condition to parenthesis
Claudiu Beznea [Thu, 9 Jun 2022 08:42:46 +0000 (11:42 +0300)]
spi: atmel-quadspi: align condition to parenthesis

Align condition to parenthesis.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/20220609084246.1795419-4-claudiu.beznea@microchip.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: atmel-quadspi: use pm_ptr()
Claudiu Beznea [Thu, 9 Jun 2022 08:42:45 +0000 (11:42 +0300)]
spi: atmel-quadspi: use pm_ptr()

Use pm_ptr() for atmel_quadspi_pm_ops.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/20220609084246.1795419-3-claudiu.beznea@microchip.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: atmel-quadspi: add runtime pm support
Claudiu Beznea [Thu, 9 Jun 2022 08:42:44 +0000 (11:42 +0300)]
spi: atmel-quadspi: add runtime pm support

Add runtime PM support for atmel-quadspi which will disable/enable
QSPI clocks on proper runtime_suspend/runtime_resume ops.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/20220609084246.1795419-2-claudiu.beznea@microchip.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: Return true/false (not 1/0) from bool function
Yang Li [Thu, 9 Jun 2022 07:12:50 +0000 (15:12 +0800)]
spi: Return true/false (not 1/0) from bool function

Return boolean values ("true" or "false") instead of 1 or 0 from bool
function.

As reported by coccicheck:
./drivers/spi/spi-s3c64xx.c:385:9-10: WARNING: return of 0/1 in function
's3c64xx_spi_can_dma' with return type bool

Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220609071250.59509-1-yang.lee@linux.alibaba.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: fix platform_no_drv_owner.cocci warning
Yang Li [Thu, 9 Jun 2022 05:55:32 +0000 (13:55 +0800)]
spi: fix platform_no_drv_owner.cocci warning

Remove .owner field if calls are used which set it automatically.

Eliminate the following coccicheck warning:
./drivers/spi/spi-microchip-core.c:624:3-8: No need to set .owner here.
The core will do it.

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Link: https://lore.kernel.org/r/20220609055533.95866-1-yang.lee@linux.alibaba.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: <linux/spi/spi.h>: Add missing documentation for struct members
David Jander [Wed, 8 Jun 2022 15:33:09 +0000 (17:33 +0200)]
spi: <linux/spi/spi.h>: Add missing documentation for struct members

Fixes these "make htmldocs" warnings:

include/linux/spi/spi.h:82: warning: Function parameter or member 'syncp' not described in 'spi_statistics'
include/linux/spi/spi.h:213: warning: Function parameter or member 'pcpu_statistics' not described in 'spi_device'
include/linux/spi/spi.h:676: warning: Function parameter or member 'pcpu_statistics' not described in 'spi_controller'

Fixes: 6598b91b5ac3 ("spi: spi.c: Convert statistics to per-cpu u64_stats_t")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: David Jander <david@protonic.nl>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20220608153309.2899565-1-david@protonic.nl
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: s3c64xx: Fix spelling mistake "hannel" -> "channel"
Colin Ian King [Wed, 8 Jun 2022 08:19:12 +0000 (09:19 +0100)]
spi: s3c64xx: Fix spelling mistake "hannel" -> "channel"

There is a spelling mistake in a dev_err message. Fix it.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Link: https://lore.kernel.org/r/20220608081912.2083086-1-colin.i.king@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agoAdd support for PolarFire SoC's spi controllers
Mark Brown [Tue, 7 Jun 2022 17:32:35 +0000 (18:32 +0100)]
Add support for PolarFire SoC's spi controllers

Merge series from Conor Dooley <conor.dooley@microchip.com>:

Add support for the PolatFire SoC SPI controller, the DT binding was
added previously.

2 years agoASoC: dt-bindings: renesas,rz-ssi: Document RZ/G2UL SoC
Biju Das [Tue, 7 Jun 2022 12:42:31 +0000 (13:42 +0100)]
ASoC: dt-bindings: renesas,rz-ssi: Document RZ/G2UL SoC

Document RZ/G2U2L SSI bindings. RZ/G2UL SSI is identical to one found
on the RZ/G2L SoC. No driver changes are required as generic compatible
string "renesas,rz-ssi" will be used as a fallback.

While at it add a '.' at the end of dmas description for the first cell.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20220607124231.3248-1-biju.das.jz@bp.renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agoMAINTAINERS: add spi to PolarFire SoC entry
Conor Dooley [Tue, 7 Jun 2022 07:38:34 +0000 (08:38 +0100)]
MAINTAINERS: add spi to PolarFire SoC entry

Add the newly introduced spi driver to the existing PolarFire SoC entry.

Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20220607073833.2331539-3-conor.dooley@microchip.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: add support for microchip fpga spi controllers
Conor Dooley [Tue, 7 Jun 2022 07:38:33 +0000 (08:38 +0100)]
spi: add support for microchip fpga spi controllers

Add a driver for Microchip FPGA SPI controllers, specifically
supporting the "hard" controllers on PolarFire SoC.

Co-developed-by: Daire McNamara <daire.mcnamara@microchip.com>
Signed-off-by: Daire McNamara <daire.mcnamara@microchip.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20220607073833.2331539-2-conor.dooley@microchip.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: stm32-qspi: Remove unused parameters
Mark Brown [Tue, 7 Jun 2022 10:42:55 +0000 (11:42 +0100)]
spi: stm32-qspi: Remove unused parameters

Merge series from patrice.chotard@foss.st.com <patrice.chotard@foss.st.com>:

This series cleans up spi-stm32-qspi driver by removing unused parameters

2 years agospi: spi-ti-qspi: Support per-transfer and per-slave speed_hz settings
Atsushi Nemoto [Wed, 18 May 2022 23:46:04 +0000 (08:46 +0900)]
spi: spi-ti-qspi: Support per-transfer and per-slave speed_hz settings

The spi-ti-qspi driver initializes its spi clock by the
spi-max-frequency property from the controller node, and ignores
per-transfer (and per-slave) speed_hz settings.

Isolate clock settings out from ti_qspi_setup() and call it from
ti_qspi_start_transfer_one() and ti_qspi_exec_mem_op(), using
per-transfer speed_hz and per-slave max_speed_hz settings.

Also drop spi_max_frequency from struct ti_qspi and use spi_master's
max_speed_hz.

Signed-off-by: Atsushi Nemoto <atsushi.nemoto@sord.co.jp>
Link: https://lore.kernel.org/r/20220519.084604.966119051165023533.atsushi.nemoto@sord.co.jp
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: spi.c: Convert statistics to per-cpu u64_stats_t
David Jander [Tue, 24 May 2022 09:18:08 +0000 (11:18 +0200)]
spi: spi.c: Convert statistics to per-cpu u64_stats_t

This change gives a dramatic performance improvement in the hot path,
since many costly spin_lock_irqsave() calls can be avoided.

On an i.MX8MM system with a MCP2518FD CAN controller connected via SPI,
the time the driver takes to handle interrupts, or in other words the time
the IRQ line of the CAN controller stays low is mainly dominated by the
time it takes to do 3 relatively short sync SPI transfers. The effect of
this patch is a reduction of this time from 136us down to only 98us.

Suggested-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David Jander <david@protonic.nl>
Link: https://lore.kernel.org/r/20220524091808.2269898-1-david@protonic.nl
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: dt-bindings: Move 'rx-sample-delay-ns' to spi-peripheral-props.yaml
Rob Herring [Wed, 25 May 2022 21:00:53 +0000 (16:00 -0500)]
spi: dt-bindings: Move 'rx-sample-delay-ns' to spi-peripheral-props.yaml

SPI bus per device properties must be defined in spi-peripheral-props.yaml
for unevaluatedProperties checks to work correctly on device nodes.

This has the side effect of promoting 'rx-sample-delay-ns' to be a
common property, but functionally it's no different if it was defined in
a Synopsys specific schema file.

Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220525210053.2488756-1-robh@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: intel: Use correct order for the parameters of devm_kcalloc()
Christophe JAILLET [Sat, 21 May 2022 06:59:35 +0000 (08:59 +0200)]
spi: intel: Use correct order for the parameters of devm_kcalloc()

We should have 'n', then 'size', not the opposite.
This is harmless because the 2 values are just multiplied, but having
the correct order silence a (unpublished yet) smatch warning.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/d114558dd0351b863ced8cc01b31754a5a4b960d.1653116362.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: spi-zynqmp-gqspi: Add two chip select support
Amit Kumar Mahapatra [Thu, 12 May 2022 14:58:20 +0000 (20:28 +0530)]
spi: spi-zynqmp-gqspi: Add two chip select support

ZynqMP GQSPI controller can support up to two chip selects but the current
GQSPI driver only support CS0. With this update and num-cs DT property set
to 2 GQSPI driver can now support two slave devices each connected to one
chip select.

GQSPI driver configures the Lower CS and Upper CS based on the reg DT
property.

Changes tested on ZynqMP board with two SPI-NOR flashes each connected
to a different CS.

Signed-off-by: Amit Kumar Mahapatra <amit.kumar-mahapatra@xilinx.com>
Link: https://lore.kernel.org/r/20220512145820.20425-1-amit.kumar-mahapatra@xilinx.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: fix typo in comment
Julia Lawall [Sat, 21 May 2022 11:10:23 +0000 (13:10 +0200)]
spi: fix typo in comment

Spelling mistake (triple letters) in comment.
Detected with the help of Coccinelle.

Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
Link: https://lore.kernel.org/r/20220521111145.81697-13-Julia.Lawall@inria.fr
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: mt65xx: add MT8365 SoC bindings
Fabien Parent [Tue, 31 May 2022 13:50:18 +0000 (15:50 +0200)]
spi: mt65xx: add MT8365 SoC bindings

Add binding documentation for the MT8365 SoC.

Signed-off-by: Fabien Parent <fparent@baylibre.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220531135026.238475-10-fparent@baylibre.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: cadence-quadspi: Remove spi_master_put() in probe failure path
Vaishnav Achath [Wed, 1 Jun 2022 07:16:11 +0000 (12:46 +0530)]
spi: cadence-quadspi: Remove spi_master_put() in probe failure path

Currently the spi_master is allocated by devm_spi_alloc_master()
and devres core manages the deallocation, but in probe failure
path spi_master_put() is being handled manually which causes
"refcount underflow use-after-free" warning when probe failure happens
after allocating spi_master.

Trimmed backtrace during failure:

refcount_t: underflow; use-after-free.
pc : refcount_warn_saturate+0xf4/0x144
Call trace:
refcount_warn_saturate
kobject_put
put_device
devm_spi_release_controller
devres_release_all

This commit makes relevant changes to remove spi_master_put() from probe
failure path.

Fixes: 606e5d408184 ("spi: cadence-quadspi: Handle spi_unregister_master() in remove()")

Signed-off-by: Vaishnav Achath <vaishnav.a@ti.com>
Link: https://lore.kernel.org/r/20220601071611.11853-1-vaishnav.a@ti.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: s3c64xx: requests spi-dma channel only during data transfer
Adithya K V [Tue, 24 May 2022 14:01:32 +0000 (19:31 +0530)]
spi: s3c64xx: requests spi-dma channel only during data transfer

Current s3c64xx SPI driver acquires DMA channel during driver
probe and holds on it even when channels are not used
(no DMA transfer). This is a problem especially when all the
DMA channels are exhausted (as other IPs on the same DMA
controller also acquires DMA channel) and if a new IP/Device
requests for a DMA channel (on the same DMA controller), it won’t
get DMA channel allocated.
The said issue can be avoided if s3c64xx driver request and
release DMA channel before and after data transfer. Let’s modify
the driver to request and release DMA channel before and after
DMA mode data transfer.

Signed-off-by: Adithya K V <adithya.kv@samsung.com>
Link: https://lore.kernel.org/r/20220524140132.59300-1-adithya.kv@samsung.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: spi-altera-dfl: Fix an error handling path
Christophe JAILLET [Sun, 29 May 2022 06:31:53 +0000 (08:31 +0200)]
spi: spi-altera-dfl: Fix an error handling path

The spi_alloc_master() call is not undone in all error handling paths.
Moreover, there is no .remove function to release the allocated memory.

In order to fix both this issues, switch to devm_spi_alloc_master().

This allows further simplification of the probe.

Fixes: ba2fc167e944 ("spi: altera: Add DFL bus driver for Altera API Controller")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/0607bb59f4073f86abe5c585d35245aef0b045c6.1653805901.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: stm32-qspi: Remove stm32_qspi_wait_poll_status() unused parameter
Patrice Chotard [Thu, 2 Jun 2022 09:25:40 +0000 (11:25 +0200)]
spi: stm32-qspi: Remove stm32_qspi_wait_poll_status() unused parameter

op parameter is not used, remove it.

Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Link: https://lore.kernel.org/r/20220602092540.369604-4-patrice.chotard@foss.st.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: stm32-qspi: Remove stm32_qspi_wait_cmd() unused parameter
Patrice Chotard [Thu, 2 Jun 2022 09:25:39 +0000 (11:25 +0200)]
spi: stm32-qspi: Remove stm32_qspi_wait_cmd() unused parameter

struct spi_mem_op *op parameter is no more used, remove it.

Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Link: https://lore.kernel.org/r/20220602092540.369604-3-patrice.chotard@foss.st.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agospi: stm32-qspi: Remove stm32_qspi_get_mode() unused parameter
Patrice Chotard [Thu, 2 Jun 2022 09:25:38 +0000 (11:25 +0200)]
spi: stm32-qspi: Remove stm32_qspi_get_mode() unused parameter

struct stm32_qspi *qsp is no more used remove it.

Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Link: https://lore.kernel.org/r/20220602092540.369604-2-patrice.chotard@foss.st.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agoLinux 5.19-rc1
Linus Torvalds [Mon, 6 Jun 2022 00:18:54 +0000 (17:18 -0700)]
Linux 5.19-rc1

2 years agoMerge tag 'pull-work.fd-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Linus Torvalds [Mon, 6 Jun 2022 00:14:03 +0000 (17:14 -0700)]
Merge tag 'pull-work.fd-fixes' of git://git./linux/kernel/git/viro/vfs

Pull file descriptor fix from Al Viro:
 "Fix for breakage in #work.fd this window"

* tag 'pull-work.fd-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  fix the breakage in close_fd_get_file() calling conventions change

2 years agoMerge tag 'mm-hotfixes-stable-2022-06-05' of git://git.kernel.org/pub/scm/linux/kerne...
Linus Torvalds [Mon, 6 Jun 2022 00:05:38 +0000 (17:05 -0700)]
Merge tag 'mm-hotfixes-stable-2022-06-05' of git://git./linux/kernel/git/akpm/mm

Pull mm hotfixes from Andrew Morton:
 "Fixups for various recently-added and longer-term issues and a few
  minor tweaks:

   - fixes for material merged during this merge window

   - cc:stable fixes for more longstanding issues

   - minor mailmap and MAINTAINERS updates"

* tag 'mm-hotfixes-stable-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
  mm/oom_kill.c: fix vm_oom_kill_table[] ifdeffery
  x86/kexec: fix memory leak of elf header buffer
  mm/memremap: fix missing call to untrack_pfn() in pagemap_range()
  mm: page_isolation: use compound_nr() correctly in isolate_single_pageblock()
  mm: hugetlb_vmemmap: fix CONFIG_HUGETLB_PAGE_FREE_VMEMMAP_DEFAULT_ON
  MAINTAINERS: add maintainer information for z3fold
  mailmap: update Josh Poimboeuf's email

2 years agoMerge tag 'mm-nonmm-stable-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 5 Jun 2022 23:58:27 +0000 (16:58 -0700)]
Merge tag 'mm-nonmm-stable-2022-06-05' of git://git./linux/kernel/git/akpm/mm

Pull delay-accounting update from Andrew Morton:
 "A single featurette for delay accounting.

  Delayed a bit because, unusually, it had dependencies on both the
  mm-stable and mm-nonmm-stable queues"

* tag 'mm-nonmm-stable-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
  delayacct: track delays from write-protect copy

2 years agobluetooth: don't use bitmaps for random flag accesses
Linus Torvalds [Sun, 5 Jun 2022 18:51:48 +0000 (11:51 -0700)]
bluetooth: don't use bitmaps for random flag accesses

The bluetooth code uses our bitmap infrastructure for the two bits (!)
of connection setup flags, and in the process causes odd problems when
it converts between a bitmap and just the regular values of said bits.

It's completely pointless to do things like bitmap_to_arr32() to convert
a bitmap into a u32.  It shoudln't have been a bitmap in the first
place.  The reason to use bitmaps is if you have arbitrary number of
bits you want to manage (not two!), or if you rely on the atomicity
guarantees of the bitmap setting and clearing.

The code could use an "atomic_t" and use "atomic_or/andnot()" to set and
clear the bit values, but considering that it then copies the bitmaps
around with "bitmap_to_arr32()" and friends, there clearly cannot be a
lot of atomicity requirements.

So just use a regular integer.

In the process, this avoids the warnings about erroneous use of
bitmap_from_u64() which were triggered on 32-bit architectures when
conversion from a u64 would access two words (and, surprise, surprise,
only one word is needed - and indeed overkill - for a 2-bit bitmap).

That was always problematic, but the compiler seems to notice it and
warn about the invalid pattern only after commit 0a97953fd221 ("lib: add
bitmap_{from,to}_arr64") changed the exact implementation details of
'bitmap_from_u64()', as reported by Sudip Mukherjee and Stephen Rothwell.

Fixes: fe92ee6425a2 ("Bluetooth: hci_core: Rework hci_conn_params flags")
Link: https://lore.kernel.org/all/YpyJ9qTNHJzz0FHY@debian/
Link: https://lore.kernel.org/all/20220606080631.0c3014f2@canb.auug.org.au/
Link: https://lore.kernel.org/all/20220605162537.1604762-1-yury.norov@gmail.com/
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Reported-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Reviewed-by: Yury Norov <yury.norov@gmail.com>
Cc: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Cc: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2 years agofix the breakage in close_fd_get_file() calling conventions change
Al Viro [Sun, 5 Jun 2022 18:01:42 +0000 (14:01 -0400)]
fix the breakage in close_fd_get_file() calling conventions change

It used to grab an extra reference to struct file rather than
just transferring to caller the one it had removed from descriptor
table.  New variant doesn't, and callers need to be adjusted.

Reported-and-tested-by: syzbot+47dd250f527cb7bebf24@syzkaller.appspotmail.com
Fixes: 6319194ec57b ("Unify the primitives for file descriptor closing")
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2 years agoMerge tag 'x86-urgent-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 5 Jun 2022 18:00:43 +0000 (11:00 -0700)]
Merge tag 'x86-urgent-2022-06-05' of git://git./linux/kernel/git/tip/tip

Pull x86 SGX fix from Thomas Gleixner:
 "A single fix for x86/SGX to prevent that memory which is allocated for
  an SGX enclave is accounted to the wrong memory control group"

* tag 'x86-urgent-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/sgx: Set active memcg prior to shmem allocation

2 years agoMerge tag 'x86-mm-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Linus Torvalds [Sun, 5 Jun 2022 17:57:35 +0000 (10:57 -0700)]
Merge tag 'x86-mm-2022-06-05' of git://git./linux/kernel/git/tip/tip

Pull x86 mm cleanup from Thomas Gleixner:
 "Use PAGE_ALIGNED() instead of open coding it in the x86/mm code"

* tag 'x86-mm-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mm: Use PAGE_ALIGNED(x) instead of IS_ALIGNED(x, PAGE_SIZE)

2 years agoMerge tag 'x86-microcode-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 5 Jun 2022 17:55:23 +0000 (10:55 -0700)]
Merge tag 'x86-microcode-2022-06-05' of git://git./linux/kernel/git/tip/tip

Pull x86 microcode updates from Thomas Gleixner:

 - Disable late microcode loading by default. Unless the HW people get
   their act together and provide a required minimum version in the
   microcode header for making a halfways informed decision its just
   lottery and broken.

 - Warn and taint the kernel when microcode is loaded late

 - Remove the old unused microcode loader interface

 - Remove a redundant perf callback from the microcode loader

* tag 'x86-microcode-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/microcode: Remove unnecessary perf callback
  x86/microcode: Taint and warn on late loading
  x86/microcode: Default-disable late loading
  x86/microcode: Rip out the OLD_INTERFACE

2 years agoMerge tag 'x86-cleanups-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 5 Jun 2022 17:53:41 +0000 (10:53 -0700)]
Merge tag 'x86-cleanups-2022-06-05' of git://git./linux/kernel/git/tip/tip

Pull x86 cleanups from Thomas Gleixner:
 "A set of small x86 cleanups:

   - Remove unused headers in the IDT code

   - Kconfig indendation and comment fixes

   - Fix all 'the the' typos in one go instead of waiting for bots to
     fix one at a time"

* tag 'x86-cleanups-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86: Fix all occurences of the "the the" typo
  x86/idt: Remove unused headers
  x86/Kconfig: Fix indentation of arch/x86/Kconfig.debug
  x86/Kconfig: Fix indentation and add endif comments to arch/x86/Kconfig

2 years agoMerge tag 'x86-boot-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 5 Jun 2022 17:49:42 +0000 (10:49 -0700)]
Merge tag 'x86-boot-2022-06-05' of git://git./linux/kernel/git/tip/tip

Pull x86 boot update from Thomas Gleixner:
 "Use strlcpy() instead of strscpy() in arch_setup()"

* tag 'x86-boot-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/setup: Use strscpy() to replace deprecated strlcpy()

2 years agoMerge tag 'timers-core-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 5 Jun 2022 17:47:06 +0000 (10:47 -0700)]
Merge tag 'timers-core-2022-06-05' of git://git./linux/kernel/git/tip/tip

Pull clockevent/clocksource updates from Thomas Gleixner:

 - Device tree bindings for MT8186

 - Tell the kernel that the RISC-V SBI timer stops in deeper power
   states

 - Make device tree parsing in sp804 more robust

 - Dead code removal and tiny fixes here and there

 - Add the missing SPDX identifiers

* tag 'timers-core-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  clocksource/drivers/oxnas-rps: Fix irq_of_parse_and_map() return value
  clocksource/drivers/timer-ti-dm: Remove unnecessary NULL check
  clocksource/drivers/timer-sun5i: Convert to SPDX identifier
  clocksource/drivers/timer-sun4i: Convert to SPDX identifier
  clocksource/drivers/pistachio: Convert to SPDX identifier
  clocksource/drivers/orion: Convert to SPDX identifier
  clocksource/drivers/lpc32xx: Convert to SPDX identifier
  clocksource/drivers/digicolor: Convert to SPDX identifier
  clocksource/drivers/armada-370-xp: Convert to SPDX identifier
  clocksource/drivers/mips-gic-timer: Convert to SPDX identifier
  clocksource/drivers/jcore: Convert to SPDX identifier
  clocksource/drivers/bcm_kona: Convert to SPDX identifier
  clocksource/drivers/sp804: Avoid error on multiple instances
  clocksource/drivers/riscv: Events are stopped during CPU suspend
  clocksource/drivers/ixp4xx: Drop boardfile probe path
  dt-bindings: timer: Add compatible for Mediatek MT8186

2 years agoMerge tag 'sched-urgent-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 5 Jun 2022 17:42:40 +0000 (10:42 -0700)]
Merge tag 'sched-urgent-2022-06-05' of git://git./linux/kernel/git/tip/tip

Pull scheduler fix from Thomas Gleixner:
 "Fix the fallout of sysctl code move which placed the init function
  wrong"

* tag 'sched-urgent-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/autogroup: Fix sysctl move

2 years agoMerge tag 'perf-urgent-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 5 Jun 2022 17:40:31 +0000 (10:40 -0700)]
Merge tag 'perf-urgent-2022-06-05' of git://git./linux/kernel/git/tip/tip

Pull perf fixes from Thomas Gleixner:

  - Make the ICL event constraints match reality

  - Remove a unused local variable

* tag 'perf-urgent-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/core: Remove unused local variable
  perf/x86/intel: Fix event constraints for ICL

2 years agoMerge tag 'perf-core-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 5 Jun 2022 17:39:20 +0000 (10:39 -0700)]
Merge tag 'perf-core-2022-06-05' of git://git./linux/kernel/git/tip/tip

Pull perf fixlet from Thomas Gleixner:
 "Trivial indentation fix in Kconfig"

* tag 'perf-core-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/Kconfig: Fix indentation in the Kconfig file

2 years agoMerge tag 'objtool-urgent-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 5 Jun 2022 16:45:27 +0000 (09:45 -0700)]
Merge tag 'objtool-urgent-2022-06-05' of git://git./linux/kernel/git/tip/tip

Pull objtool fixes from Thomas Gleixner:

 - Handle __ubsan_handle_builtin_unreachable() correctly and treat it as
   noreturn

 - Allow architectures to select uaccess validation

 - Use the non-instrumented bit test for test_cpu_has() to prevent
   escape from non-instrumentable regions

 - Use arch_ prefixed atomics for JUMP_LABEL=n builds to prevent escape
   from non-instrumentable regions

 - Mark a few tiny inline as __always_inline to prevent GCC from
   bringing them out of line and instrumenting them

 - Mark the empty stub context_tracking_enabled() as always inline as
   GCC brings them out of line and instruments the empty shell

 - Annotate ex_handler_msr_mce() as dead end

* tag 'objtool-urgent-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/extable: Annotate ex_handler_msr_mce() as a dead end
  context_tracking: Always inline empty stubs
  x86: Always inline on_thread_stack() and current_top_of_stack()
  jump_label,noinstr: Avoid instrumentation for JUMP_LABEL=n builds
  x86/cpu: Elide KCSAN for cpu_has() and friends
  objtool: Mark __ubsan_handle_builtin_unreachable() as noreturn
  objtool: Add CONFIG_HAVE_UACCESS_VALIDATION

2 years agoMerge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Sun, 5 Jun 2022 16:25:12 +0000 (09:25 -0700)]
Merge tag 'scsi-misc' of git://git./linux/kernel/git/jejb/scsi

Pull more SCSI updates from James Bottomley:
 "Mostly small bug fixes plus other trivial updates.

  The major change of note is moving ufs out of scsi and a minor update
  to lpfc vmid handling"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (24 commits)
  scsi: qla2xxx: Remove unused 'ql_dm_tgt_ex_pct' parameter
  scsi: qla2xxx: Remove setting of 'req' and 'rsp' parameters
  scsi: mpi3mr: Fix kernel-doc
  scsi: lpfc: Add support for ATTO Fibre Channel devices
  scsi: core: Return BLK_STS_TRANSPORT for ALUA transitioning
  scsi: sd_zbc: Prevent zone information memory leak
  scsi: sd: Fix potential NULL pointer dereference
  scsi: mpi3mr: Rework mrioc->bsg_device model to fix warnings
  scsi: myrb: Fix up null pointer access on myrb_cleanup()
  scsi: core: Unexport scsi_bus_type
  scsi: sd: Don't call blk_cleanup_disk() in sd_probe()
  scsi: ufs: ufshcd: Delete unnecessary NULL check
  scsi: isci: Fix typo in comment
  scsi: pmcraid: Fix typo in comment
  scsi: smartpqi: Fix typo in comment
  scsi: qedf: Fix typo in comment
  scsi: esas2r: Fix typo in comment
  scsi: storvsc: Fix typo in comment
  scsi: ufs: Split the drivers/scsi/ufs directory
  scsi: qla1280: Remove redundant variable
  ...