Wei Yongjun [Mon, 17 Oct 2016 15:13:59 +0000 (15:13 +0000)]
soc/fsl/bman: Use resource_size instead of computation
Use resource_size function on resource object
instead of explicit computation.
Generated by: scripts/coccinelle/api/resource_size.cocci
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Scott Wood <oss@buserror.net>
Geliang Tang [Wed, 23 Nov 2016 15:04:21 +0000 (23:04 +0800)]
soc/fsl/qe: use builtin_platform_driver
Use builtin_platform_driver() helper to simplify the code.
Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: Scott Wood <oss@buserror.net>
Geliang Tang [Wed, 23 Nov 2016 15:02:35 +0000 (23:02 +0800)]
powerpc/fsl_pmc: use builtin_platform_driver
Use builtin_platform_driver() helper to simplify the code.
Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: Scott Wood <oss@buserror.net>
Geliang Tang [Wed, 23 Nov 2016 15:00:45 +0000 (23:00 +0800)]
powerpc/83xx/suspend: use builtin_platform_driver
Use builtin_platform_driver() helper to simplify the code.
Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: Scott Wood <oss@buserror.net>
Claudiu Manoil [Wed, 16 Nov 2016 14:40:30 +0000 (16:40 +0200)]
soc/qman: Handle endianness of h/w descriptors
The hardware descriptors have big endian (BE) format.
Provide proper endianness handling for the remaining
descriptor fields, to ensure they are correctly
accessed by non-BE CPUs too.
Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: Scott Wood <oss@buserror.net>
Claudiu Manoil [Wed, 16 Nov 2016 14:40:29 +0000 (16:40 +0200)]
soc/qman: Clean up CGR CSCN target update operations
Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: Scott Wood <oss@buserror.net>
Claudiu Manoil [Wed, 16 Nov 2016 14:40:28 +0000 (16:40 +0200)]
soc/qman: Change remaining contextB into context_b
There are multiple occurences of both contextB and context_b
in different h/w descriptors, referring to the same descriptor
field known as "Context B". Stick with the "context_b" naming,
for obvious reasons including consistency (see also context_a).
Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: Scott Wood <oss@buserror.net>
Claudiu Manoil [Wed, 16 Nov 2016 14:40:27 +0000 (16:40 +0200)]
soc/qbman: Handle endianness of qm/bm_in/out()
Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: Scott Wood <oss@buserror.net>
Claudiu Manoil [Wed, 16 Nov 2016 14:40:26 +0000 (16:40 +0200)]
soc/qman: Drop unused field from eqcr/dqrr descriptors
ORP ("Order Restoration Point") mechanism not supported.
Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: Scott Wood <oss@buserror.net>
Claudiu Manoil [Wed, 16 Nov 2016 14:40:25 +0000 (16:40 +0200)]
soc/qman: Fix accesses to fqid, cleanup
Preventively mask every access to the 'fqid' h/w field,
since it is defined as a 24-bit field, for every h/w
descriptor. Add generic accessors for this field to
ensure correct access.
Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: Scott Wood <oss@buserror.net>
Claudiu Manoil [Wed, 16 Nov 2016 14:40:24 +0000 (16:40 +0200)]
soc/qman: Remove unused struct qm_mcc* layouts
1. qm_mcc_querywq layout not used for now, so drop it;
2. queryfq, queryfq_np and alterfq are used only for accesses to
the 'fqid' field, so replace these with a generic 'fq' layout.
As a consequence, 'querycgr' turns into 'cgr' following the
same reasoning above and for consistent naming.
Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: Scott Wood <oss@buserror.net>
Claudiu Manoil [Wed, 16 Nov 2016 14:40:23 +0000 (16:40 +0200)]
soc/qman: Remove redundant checks from qman_create_cgr()
opts is checked redundantly.
Move local_opts declaration inside its usage scope.
Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: Scott Wood <oss@buserror.net>
Claudiu Manoil [Wed, 16 Nov 2016 14:40:22 +0000 (16:40 +0200)]
soc/qman: test: Don't use dummy platform device for dma mapping
Replace dummy platform device hack with a reference to a portal's
platform device, in order to dma map the test frame for this
small unit test. The 2 qman symbols need to be exported because
this self test is a kernel module.
Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: Scott Wood <oss@buserror.net>
Claudiu Manoil [Wed, 16 Nov 2016 14:40:21 +0000 (16:40 +0200)]
soc/qman: Don't add a new platform device for dma mapping
The qman portals are platform devices themselves, so they should
handle dma mappings. Creating a dummy platform device in order to
support dma mapping operations is not justified (and not portable).
Instead, do the mapping against the first portal that has been
initialised.
Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: Scott Wood <oss@buserror.net>
Claudiu Manoil [Wed, 16 Nov 2016 14:40:20 +0000 (16:40 +0200)]
soc/qman: test: Fix implementation of fd_cmp()
This function must only return the truth value of whether
two frame descriptors are different or not.
It does NOT have to compute some obscure difference between
fd fields and return it as an int, making sparse complain
about type conversions in the process.
Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: Scott Wood <oss@buserror.net>
Claudiu Manoil [Wed, 16 Nov 2016 14:40:19 +0000 (16:40 +0200)]
soc/qman: Fix direct access to fd's addr_lo, use proper accesor
Use the proper accessor to get the FD address.
Accessing the internal field "addr_lo" directly is not portable
and error prone.
Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: Scott Wood <oss@buserror.net>
Claudiu Manoil [Wed, 16 Nov 2016 14:40:18 +0000 (16:40 +0200)]
soc/qman: Fix struct qm_fqd set accessor for context_a
context_a.hi is 32bit
Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: Scott Wood <oss@buserror.net>
Claudiu Manoil [Wed, 16 Nov 2016 14:40:17 +0000 (16:40 +0200)]
soc/qbman: Fix resource leak on portal probing error path
In case init_pcfg() returns with error the CI region
must be unmapped too.
Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: Scott Wood <oss@buserror.net>
Claudiu Manoil [Wed, 16 Nov 2016 14:40:16 +0000 (16:40 +0200)]
soc/qman: Fix h/w resource cleanup error path handling
qman_query_fq*() may return other error codes apart from
-ERANGE, in which cases the error handling done by the
resource cleanup callers would be wrong. The patch
fixes the handling of those cases, and cleans up related
code inside the resource cleanup & release handlers (i.e.
replace hardcoded fqid value with corresponding define).
Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: Scott Wood <oss@buserror.net>
Madalin Bucur [Wed, 16 Nov 2016 14:40:15 +0000 (16:40 +0200)]
soc/qman: Replace of_get_property() with portable equivalent
Use arch portable of_property_read_u32() instead, which takes
care of endianness conversions.
Signed-off-by: Madalin Bucur <madalin.bucur@nxp.com>
Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: Scott Wood <oss@buserror.net>
Madalin Bucur [Wed, 16 Nov 2016 14:40:14 +0000 (16:40 +0200)]
soc/qman: Check ioremap return value
Signed-off-by: Madalin Bucur <madalin.bucur@nxp.com>
Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: Scott Wood <oss@buserror.net>
Andy Fleming [Sun, 23 Oct 2016 23:48:38 +0000 (18:48 -0500)]
powerpc/85xx: Enable gpio power/reset driver
These config changes build:
drivers/power/reset/gpio-poweroff.c
drivers/power/reset/gpio-restart.c
Signed-off-by: Andy Fleming <afleming@gmail.com>
Signed-off-by: Scott Wood <oss@buserror.net>
Heiner Kallweit [Sat, 29 Oct 2016 14:29:04 +0000 (16:29 +0200)]
powerpc/fsl_soc: improve and simplify get_baudrate
Use of_property_read_u32 instead of the generic of_get_property to
simplify the code. In addition move the declaration of fs_baudrate
into get_baudrate because it's private to this function.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Scott Wood <oss@buserror.net>
Heiner Kallweit [Sat, 29 Oct 2016 14:28:25 +0000 (16:28 +0200)]
powerpc/fsl_soc: improve and simplify get_brgfreq
Use of_property_read_u32 instead of the generic of_get_property to
simplify the code. In addition move the declaration of brgfreq
into get_brgfreq because it's private to this function.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
[scottwood: minor whitespace fixes]
Signed-off-by: Scott Wood <oss@buserror.net>
Heiner Kallweit [Sat, 29 Oct 2016 14:27:14 +0000 (16:27 +0200)]
powerpc/fsl_soc: improve and simplify fsl_get_sys_freq
Use of_property_read_u32 instead of the generic of_get_property to
simplify the code. In addition move the declaration of sysfreq
into fsl_get_sys_freq because it's private to this function.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Scott Wood <oss@buserror.net>
David Engraf [Tue, 15 Nov 2016 08:24:27 +0000 (09:24 +0100)]
powerpc/85xx/qemu: Enable CONFIG_E500 and CONFIG_PPC_E500MC
The QEMU e500 board needs to enable CONFIG_E500 to correctly boot. QEMU
for ppc64 uses e5500/e6500 emulation, thus CONFIG_PPC_E500MC is required
as well.
Signed-off-by: David Engraf <david.engraf@sysgo.com>
Signed-off-by: Scott Wood <oss@buserror.net>
Colin Ian King [Sat, 12 Nov 2016 17:01:30 +0000 (17:01 +0000)]
soc/fsl: fix spelling mistakes in critical error messages
Trivial fix to spelling mistake "uncommited" to "uncommitted" in
critical error messages.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Scott Wood <oss@buserror.net>
Florian Larysch [Thu, 17 Nov 2016 10:23:23 +0000 (11:23 +0100)]
powerpc/dts: add device tree entry for W83793 on T4240RDB
The T4240RDB contains a W83793 hardware monitoring chip. Add a device
tree entry to make the driver attach to it, as the i2c-mpc bus driver
dropped support for class-based instantiation of devices a long time
ago.
Signed-off-by: Florian Larysch <fl@n621.de>
Signed-off-by: Scott Wood <oss@buserror.net>
Florian Larysch [Thu, 17 Nov 2016 10:23:24 +0000 (11:23 +0100)]
DT: i2c: W83793 is a trivial device
Signed-off-by: Florian Larysch <fl@n621.de>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Scott Wood <oss@buserror.net>
Suraj Jitindar Singh [Wed, 9 Nov 2016 05:36:33 +0000 (16:36 +1100)]
powerpc/mm: Correct process and partition table max size
Version 3.00 of the ISA states that the PATS (partition table size) field
of the PTCR (partition table control register) and the PRTS (process table
size) field of the partition table entry must both be less than or equal
to 24. However the actual size of the partition and process tables is equal
to 2 to the power of 12 plus the PATS and PRTS fields, respectively. This
means that the max allowable size of each of these tables is 2^36 or 64GB
for both.
Thus when checking the size shift for each we should be checking for values
of greater than 36 instead of the current check for shifts larger than 24
and 23.
Fixes:
2bfd65e45e877fb5704730244da67c748d28a1b8
Signed-off-by: Suraj Jitindar Singh <sjitindarsingh@gmail.com>
Reviewed-by: Balbir Singh <bsingharora@gmail.com>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Anshuman Khandual [Fri, 30 Sep 2016 02:33:02 +0000 (10:33 +0800)]
selftests/powerpc: Add ptrace tests for TM SPR registers
This patch adds ptrace interface test for TM SPR registers. This
also adds ptrace interface based helper functions related to TM
SPR registers access.
Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Signed-off-by: Simon Guo <wei.guo.simon@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Anshuman Khandual [Fri, 30 Sep 2016 02:33:01 +0000 (10:33 +0800)]
selftests/powerpc: Add ptrace tests for VSX, VMX registers in suspended TM
This patch adds ptrace interface test for VSX, VMX registers
inside suspended TM context.
Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Signed-off-by: Simon Guo <wei.guo.simon@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Anshuman Khandual [Fri, 30 Sep 2016 02:33:00 +0000 (10:33 +0800)]
selftests/powerpc: Add ptrace tests for VSX, VMX registers in TM
This patch adds ptrace interface test for VSX, VMX registers
inside TM context. This also adds ptrace interface based helper
functions related to chckpointed VSX, VMX registers access.
Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Signed-off-by: Simon Guo <wei.guo.simon@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Anshuman Khandual [Fri, 30 Sep 2016 02:32:59 +0000 (10:32 +0800)]
selftests/powerpc: Add ptrace tests for VSX, VMX registers
This patch adds ptrace interface test for VSX, VMX registers.
This also adds ptrace interface based helper functions related
to VSX, VMX registers access. This also adds some assembly
helper functions related to VSX and VMX registers.
Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Signed-off-by: Simon Guo <wei.guo.simon@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Anshuman Khandual [Fri, 30 Sep 2016 02:32:58 +0000 (10:32 +0800)]
selftests/powerpc: Add ptrace tests for TAR, PPR, DSCR in suspended TM
This patch adds ptrace interface test for TAR, PPR, DSCR
registers inside suspended TM context.
Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Signed-off-by: Simon Guo <wei.guo.simon@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Anshuman Khandual [Fri, 30 Sep 2016 02:32:57 +0000 (10:32 +0800)]
selftests/powerpc: Add ptrace tests for TAR, PPR, DSCR in TM
This patch adds ptrace interface test for TAR, PPR, DSCR
registers inside TM context. This also adds ptrace
interface based helper functions related to checkpointed
TAR, PPR, DSCR register access.
Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Signed-off-by: Simon Guo <wei.guo.simon@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Anshuman Khandual [Fri, 30 Sep 2016 02:32:56 +0000 (10:32 +0800)]
selftests/powerpc: Add ptrace tests for TAR, PPR, DSCR registers
This patch adds ptrace interface test for TAR, PPR, DSCR
registers. This also adds ptrace interface based helper
functions related to TAR, PPR, DSCR register access.
Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Signed-off-by: Simon Guo <wei.guo.simon@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Anshuman Khandual [Fri, 30 Sep 2016 02:32:55 +0000 (10:32 +0800)]
selftests/powerpc: Add ptrace tests for GPR/FPR registers in suspended TM
This patch adds ptrace interface test for GPR/FPR registers
inside suspended TM context.
Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Signed-off-by: Simon Guo <wei.guo.simon@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Anshuman Khandual [Fri, 30 Sep 2016 02:32:54 +0000 (10:32 +0800)]
selftests/powerpc: Add ptrace tests for GPR/FPR registers in TM
This patch adds ptrace interface test for GPR/FPR registers
inside TM context. This adds ptrace interface based helper
functions related to checkpointed GPR/FPR access.
Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Signed-off-by: Simon Guo <wei.guo.simon@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Anshuman Khandual [Fri, 30 Sep 2016 02:32:52 +0000 (10:32 +0800)]
selftests/powerpc: Add ptrace tests for GPR/FPR registers
This patch adds ptrace interface test for GPR/FPR registers.
This adds ptrace interface based helper functions related to
GPR/FPR access and some assembly helper functions related to
GPR/FPR registers.
Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Signed-off-by: Simon Guo <wei.guo.simon@gmail.com>
[mpe: Add #defines for the new note types when headers don't define them]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Simon Guo [Fri, 30 Sep 2016 02:32:51 +0000 (10:32 +0800)]
selftests/powerpc: Move shared headers into new include dir
There are some functions, especially register related, which can
be shared across multiple selftests/powerpc test directories.
This patch creates a new include directory to store those shared
files, so that the file layout becomes more neat.
Signed-off-by: Simon Guo <wei.guo.simon@gmail.com>
[mpe: Reworked to move the headers only]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Anshuman Khandual [Fri, 30 Sep 2016 02:32:50 +0000 (10:32 +0800)]
selftests/powerpc: Add more SPR numbers, TM & VMX instructions to 'reg.h'/'instructions.h'
This patch adds SPR number for TAR, PPR, DSCR special
purpose registers. It also adds TM, VSX, VMX related
instructions which will then be used by patches later
in the series.
Now that the new DSCR register definitions (SPRN_DSCR_PRIV and
SPRN_DSCR) are defined outside this directory, use them instead.
Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Signed-off-by: Simon Guo <wei.guo.simon@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Rashmica Gupta [Fri, 27 May 2016 05:49:00 +0000 (15:49 +1000)]
powerpc/mm: Dump hash table
Useful to be able to dump the kernel hash page table to check
which pages are hashed along with their sizes and other details.
Add a debugfs file to check the hash page table. If radix is enabled
(and so there is no hash page table) then this file doesn't exist. To
use this the PPC_PTDUMP config option must be selected.
Signed-off-by: Rashmica Gupta <rashmicy@gmail.com>
[mpe: Fix build with SPARSEMEM_VMEMMAP=n & PSERIES=n]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Rashmica Gupta [Fri, 27 May 2016 05:48:59 +0000 (15:48 +1000)]
powerpc/mm: Dump linux pagetables
Useful to be able to dump the kernels page tables to check permissions
and memory types - derived from arm64's implementation.
Add a debugfs file to check the page tables. To use this the PPC_PTDUMP
config option must be selected.
Signed-off-by: Rashmica Gupta <rashmicy@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Michael Ellerman [Mon, 14 Nov 2016 05:28:10 +0000 (16:28 +1100)]
powerpc/pseries: Move CMO code from plapr_wrappers.h to platforms/pseries
Currently there's some CMO (Cooperative Memory Overcommit) code, in
plpar_wrappers.h. Some of it is #ifdef CONFIG_PSERIES and some of it
isn't. The end result being if a file includes plpar_wrappers.h it won't
build with CONFIG_PSERIES=n.
Fix it by moving the CMO code into platforms/pseries. The two hcall
wrappers can just be moved into their only caller, cmm.c, and the
accessors can go in pseries.h.
Note we need the accessors because cmm.c can be built as a module, so
there needs to be a split between the built-in code vs the module, and
that's achieved by using those accessors.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Balbir Singh [Sat, 5 Nov 2016 04:24:22 +0000 (15:24 +1100)]
powerpc/mm: Fix typo in radix encodings print
Rename "sift" to "shift".
Signed-off-by: Balbir Singh <bsingharora@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Bartlomiej Zolnierkiewicz [Wed, 3 Feb 2016 15:50:30 +0000 (16:50 +0100)]
powerpc: convert storcenter_defconfig to use libata PATA drivers
IDE subsystem has been deprecated since 2009 and the majority
(if not all) of Linux distributions have switched to use
libata for ATA support exclusively. However there are still
some users (mostly old or/and embedded non-x86 systems) that
have not converted from using IDE subsystem to libata PATA
drivers. This doesn't seem to be good thing in the long-term
for Linux as while there is less and less PATA systems left
in use:
* testing efforts are divided between two subsystems
* having duplicate drivers for same hardware confuses users
This patch converts storcenter_defconfig to use libata PATA
drivers.
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Bartlomiej Zolnierkiewicz [Wed, 3 Feb 2016 15:50:29 +0000 (16:50 +0100)]
powerpc: convert pseries_defconfig to use libata PATA drivers
IDE subsystem has been deprecated since 2009 and the majority
(if not all) of Linux distributions have switched to use
libata for ATA support exclusively. However there are still
some users (mostly old or/and embedded non-x86 systems) that
have not converted from using IDE subsystem to libata PATA
drivers. This doesn't seem to be good thing in the long-term
for Linux as while there is less and less PATA systems left
in use:
* testing efforts are divided between two subsystems
* having duplicate drivers for same hardware confuses users
This patch converts pseries_defconfig to use libata PATA
drivers.
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Bartlomiej Zolnierkiewicz [Wed, 3 Feb 2016 15:50:27 +0000 (16:50 +0100)]
powerpc: convert ppc6xx_defconfig to use libata PATA drivers
IDE subsystem has been deprecated since 2009 and the majority
(if not all) of Linux distributions have switched to use
libata for ATA support exclusively. However there are still
some users (mostly old or/and embedded non-x86 systems) that
have not converted from using IDE subsystem to libata PATA
drivers. This doesn't seem to be good thing in the long-term
for Linux as while there is less and less PATA systems left
in use:
* testing efforts are divided between two subsystems
* having duplicate drivers for same hardware confuses users
This patch converts ppc6xx_defconfig to use libata PATA
drivers.
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Bartlomiej Zolnierkiewicz [Wed, 3 Feb 2016 15:50:26 +0000 (16:50 +0100)]
powerpc: convert ppc64e_defconfig to use libata PATA drivers
IDE subsystem has been deprecated since 2009 and the majority
(if not all) of Linux distributions have switched to use
libata for ATA support exclusively. However there are still
some users (mostly old or/and embedded non-x86 systems) that
have not converted from using IDE subsystem to libata PATA
drivers. This doesn't seem to be good thing in the long-term
for Linux as while there is less and less PATA systems left
in use:
* testing efforts are divided between two subsystems
* having duplicate drivers for same hardware confuses users
This patch converts ppc64e_defconfig to use libata PATA
drivers.
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Bartlomiej Zolnierkiewicz [Wed, 3 Feb 2016 15:50:25 +0000 (16:50 +0100)]
powerpc: convert ppc64_defconfig to use libata PATA drivers
IDE subsystem has been deprecated since 2009 and the majority
(if not all) of Linux distributions have switched to use
libata for ATA support exclusively. However there are still
some users (mostly old or/and embedded non-x86 systems) that
have not converted from using IDE subsystem to libata PATA
drivers. This doesn't seem to be good thing in the long-term
for Linux as while there is less and less PATA systems left
in use:
* testing efforts are divided between two subsystems
* having duplicate drivers for same hardware confuses users
This patch converts ppc64_defconfig to use libata PATA
drivers.
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Bartlomiej Zolnierkiewicz [Wed, 3 Feb 2016 15:50:24 +0000 (16:50 +0100)]
powerpc: convert pmac32_defconfig to use libata PATA drivers
IDE subsystem has been deprecated since 2009 and the majority
(if not all) of Linux distributions have switched to use
libata for ATA support exclusively. However there are still
some users (mostly old or/and embedded non-x86 systems) that
have not converted from using IDE subsystem to libata PATA
drivers. This doesn't seem to be good thing in the long-term
for Linux as while there is less and less PATA systems left
in use:
* testing efforts are divided between two subsystems
* having duplicate drivers for same hardware confuses users
This patch converts pmac32_defconfig to use libata PATA
drivers.
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Bartlomiej Zolnierkiewicz [Wed, 3 Feb 2016 15:50:23 +0000 (16:50 +0100)]
powerpc: disable IDE subsystem in pasemi_defconfig
This patch disables deprecated IDE subsystem in pasemi_defconfig
(no IDE host drivers are selected in this config so there is no valid
reason to enable IDE subsystem itself).
Cc: Olof Johansson <olof@lixom.net>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Bartlomiej Zolnierkiewicz [Wed, 3 Feb 2016 15:50:22 +0000 (16:50 +0100)]
powerpc: convert maple_defconfig to use libata PATA drivers
IDE subsystem has been deprecated since 2009 and the majority
(if not all) of Linux distributions have switched to use
libata for ATA support exclusively. However there are still
some users (mostly old or/and embedded non-x86 systems) that
have not converted from using IDE subsystem to libata PATA
drivers. This doesn't seem to be good thing in the long-term
for Linux as while there is less and less PATA systems left
in use:
* testing efforts are divided between two subsystems
* having duplicate drivers for same hardware confuses users
This patch converts maple_defconfig to use libata PATA
drivers.
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Bartlomiej Zolnierkiewicz [Wed, 3 Feb 2016 15:50:21 +0000 (16:50 +0100)]
powerpc: convert g5_defconfig to use libata PATA drivers
IDE subsystem has been deprecated since 2009 and the majority
(if not all) of Linux distributions have switched to use
libata for ATA support exclusively. However there are still
some users (mostly old or/and embedded non-x86 systems) that
have not converted from using IDE subsystem to libata PATA
drivers. This doesn't seem to be good thing in the long-term
for Linux as while there is less and less PATA systems left
in use:
* testing efforts are divided between two subsystems
* having duplicate drivers for same hardware confuses users
This patch converts g5_defconfig to use libata PATA drivers.
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Bartlomiej Zolnierkiewicz [Wed, 3 Feb 2016 15:50:20 +0000 (16:50 +0100)]
powerpc: convert chrp32_defconfig to use libata PATA drivers
IDE subsystem has been deprecated since 2009 and the majority
(if not all) of Linux distributions have switched to use
libata for ATA support exclusively. However there are still
some users (mostly old or/and embedded non-x86 systems) that
have not converted from using IDE subsystem to libata PATA
drivers. This doesn't seem to be good thing in the long-term
for Linux as while there is less and less PATA systems left
in use:
* testing efforts are divided between two subsystems
* having duplicate drivers for same hardware confuses users
This patch converts chrp32_defconfig to use libata PATA
drivers.
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Bartlomiej Zolnierkiewicz [Wed, 3 Feb 2016 15:50:19 +0000 (16:50 +0100)]
powerpc: convert cell_defconfig to use libata PATA drivers
IDE subsystem has been deprecated since 2009 and the majority
(if not all) of Linux distributions have switched to use
libata for ATA support exclusively. However there are still
some users (mostly old or/and embedded non-x86 systems) that
have not converted from using IDE subsystem to libata PATA
drivers. This doesn't seem to be good thing in the long-term
for Linux as while there is less and less PATA systems left
in use:
* testing efforts are divided between two subsystems
* having duplicate drivers for same hardware confuses users
This patch converts cell_defconfig to use libata PATA drivers.
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Bartlomiej Zolnierkiewicz [Wed, 3 Feb 2016 15:50:18 +0000 (16:50 +0100)]
powerpc: convert amigaone_defconfig to use libata PATA drivers
IDE subsystem has been deprecated since 2009 and the majority
(if not all) of Linux distributions have switched to use
libata for ATA support exclusively. However there are still
some users (mostly old or/and embedded non-x86 systems) that
have not converted from using IDE subsystem to libata PATA
drivers. This doesn't seem to be good thing in the long-term
for Linux as while there is less and less PATA systems left
in use:
* testing efforts are divided between two subsystems
* having duplicate drivers for same hardware confuses users
This patch converts amigaone_defconfig to use libata PATA
drivers.
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Peter Senna Tschudin [Wed, 9 Nov 2016 08:55:04 +0000 (09:55 +0100)]
selftests/powerpc: Return false instead of -1 in require_paranoia_below()
Returning a negative value for a boolean function seem to have the
undesired effect of returning true. require_paranoia_below() is a
boolean function, but the variable used to store the return value is an
integer, receiving -1 or 0. This patch converts rc to bool, replaces -1
by false, and 0 by true.
mpe: This wasn't exhibiting in practice because the common case, where
we do the comparison of the desired level vs the current value, was
being compiled into a computation based on the result of the comparison,
ie. it wasn't using the default -1 value at all. However that was just
luck and the code is still wrong.
Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: Andrew Shadura <andrew.shadura@collabora.co.uk>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Johan Hovold [Tue, 1 Nov 2016 15:26:03 +0000 (16:26 +0100)]
powerpc/pci/rpadlpar: Fix device reference leaks
Make sure to drop any device reference taken by vio_find_node() when
adding and removing virtual I/O slots.
Fixes:
5eeb8c63a38f ("[PATCH] PCI Hotplug: rpaphp: Move VIO registration")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Johan Hovold [Tue, 1 Nov 2016 15:26:02 +0000 (16:26 +0100)]
powerpc/vio: Clarify vio_find_node() reference counting
Add comment clarifying that vio_find_node() takes a reference to the
embedded struct device which needs to be dropped after use.
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Johan Hovold [Tue, 1 Nov 2016 15:26:01 +0000 (16:26 +0100)]
powerpc/ibmebus: Fix further device reference leaks
Make sure to drop any reference taken by bus_find_device() when creating
devices during init and driver registration.
Fixes:
55347cc9962f ("[POWERPC] ibmebus: Add device creation and bus probing based on of_device")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Johan Hovold [Tue, 1 Nov 2016 15:26:00 +0000 (16:26 +0100)]
powerpc/ibmebus: Fix device reference leaks in sysfs interface
Make sure to drop any reference taken by bus_find_device() in the sysfs
callbacks that are used to create and destroy devices based on
device-tree entries.
Fixes:
6bccf755ff53 ("[POWERPC] ibmebus: dynamic addition/removal of adapters, some code cleanup")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Jack Miller [Thu, 11 Aug 2016 00:32:40 +0000 (19:32 -0500)]
powerpc/powernv: Simplify searching for compatible device nodes
This condenses the opal node searching into a single function that finds
all compatible nodes, instead of just searching the ibm,opal children,
for ipmi, flash, and prd similar to how opal-i2c nodes are found.
Signed-off-by: Jack Miller <jack@codezen.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Michael Neuling [Mon, 31 Oct 2016 02:19:39 +0000 (13:19 +1100)]
powerpc: Revert Load Monitor Register Support
Load monitored is no longer supported on POWER9 so let's remove the
code.
This reverts commit
bd3ea317fddf ("powerpc: Load Monitor Register
Support").
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Michael Neuling [Mon, 31 Oct 2016 02:19:38 +0000 (13:19 +1100)]
selftests/powerpc: Revert Load Monitor Register Tests
Load monitored won't be supported in POWER9, so PPC_FEATURE2_ARCH_3_00
(in HWCAP2) will no longer imply Load monitor support.
These Load monitored tests are enabled by PPC_FEATURE2_ARCH_3_00 so
they are now bogus and need to be removed.
This reverts commit
16c19a2e9833 ("selftests/powerpc: Load Monitor
Register Tests").
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Michael Ellerman [Thu, 3 Nov 2016 07:12:16 +0000 (18:12 +1100)]
powerpc/configs: Drop REISERFS from pseries & powernv
No one uses reiserfs much these days, or is likely to in future. So drop
it from pseries and powernv defconfigs to save time and space. It's
still enabled in ppc64_defconfig so we get some build coverage.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Elimar Riesebieter [Sun, 18 Sep 2016 11:08:45 +0000 (13:08 +0200)]
macintosh: Remove dependency on IDE_GD_ATA if ADB_PMU_LED_DISK is selected
We can use the front led of powerbooks/ibooks to visualize disk activity
without the deprecated IDE_GD_ATA.
Signed-off-by: Elimar Riesebieter <riesebie@lxtec.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Balbir Singh [Wed, 28 Sep 2016 07:25:52 +0000 (17:25 +1000)]
powerpc/hash64: Be more careful when generating tlbiel
In ISA v2.05, the tlbiel instruction takes two arguments, RB and L:
tlbiel RB,L
+---------+---------+----+---------+---------+---------+----+
| 31 | / | L | / | RB | 274 | / |
| 31 - 26 | 25 - 22 | 21 | 20 - 16 | 15 - 11 | 10 - 1 | 0 |
+---------+---------+----+---------+---------+---------+----+
In ISA v2.06 tlbiel takes only one argument, RB:
tlbiel RB
+---------+---------+---------+---------+---------+----+
| 31 | / | / | RB | 274 | / |
| 31 - 26 | 25 - 21 | 20 - 16 | 15 - 11 | 10 - 1 | 0 |
+---------+---------+---------+---------+---------+----+
And in ISA v3.00 tlbiel takes five arguments:
tlbiel RB,RS,RIC,PRS,R
+---------+---------+----+---------+----+----+---------+---------+----+
| 31 | RS | / | RIC |PRS | R | RB | 274 | / |
| 31 - 26 | 25 - 21 | 20 | 19 - 18 | 17 | 16 | 15 - 11 | 10 - 1 | 0 |
+---------+---------+----+---------+----+----+---------+---------+----+
However the assembler also accepts "tlbiel RB", and generates
"tlbiel RB,r0,0,0,0".
As you can see above the L field from the v2.05 encoding overlaps with the
reserved field of the v2.06 encoding, and the low bit of the RS field of the
v3.00 encoding.
Currently in __tlbiel() we generate two tlbiel instructions manually using hex
constants. In the first case, for MMU_PAGE_4K, we generate "tlbiel RB,0", which
is safe in all cases, because the L bit is zero.
However in the default case we generate "tlbiel RB,1", therefore setting bit 21
to 1.
This is not an actual bug on v2.06 processors, because the CPU ignores the value
of the reserved field. However software is supposed to encode the reserved
fields as zero to enable forward compatibility.
On v3.00 processors setting bit 21 to 1 and no other bits of RS, means we are
using r1 for the value of RS.
Although it's not obvious, the code sets the IS field (bits 10-11) to 0 (by
omission), and L=1, in the va value, which is passed as RB. We also pass R=0 in
the instruction.
The combination of IS=0, L=1 and R=0 means the value of RS is not used, so even
on ISA v3.00 there is no actual bug.
We should still fix it, as setting a reserved bit on v2.06 is naughty, and we
are only avoiding a bug on v3.00 by accident rather than design. Use
ASM_FTR_IFSET() to generate the single argument form on ISA v2.06 and later, and
the two argument form on pre v2.06.
Although there may be very old toolchains which don't understand tlbiel, we have
other code in the tree which has been using tlbiel for over five years, and no
one has reported any build failures, so just let the assembler generate the
instructions.
Signed-off-by: Balbir Singh <bsingharora@gmail.com>
[mpe: Rewrite change log, use IFSET instead of IFCLR]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Michael Ellerman [Thu, 20 Oct 2016 05:00:14 +0000 (16:00 +1100)]
powerpc/book3s64: Always build for power4 or later
When we're not compiling for a specific CPU, ie. none of the
CONFIG_POWERx_CPU options are set, and CONFIG_GENERIC_CPU *is* set, we
currently don't pass any -mcpu option to the compiler. This means the
compiler builds for a "generic" Power CPU.
But back in 2014 we dropped support for pre power4 CPUs in commit
468a33028edd ("powerpc: Drop support for pre-POWER4 cpus").
Given that, there's no point in building the kernel to run on pre power4
cpus. So update the flags we pass to the compiler when
CONFIG_GENERIC_CPU is set, to specify -mcpu=power4.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Nicholas Piggin [Fri, 14 Oct 2016 07:31:33 +0000 (18:31 +1100)]
powerpc/64: Add an option to force run-at-load to test relocation
This adds a config option that can help exercise the case when
the kernel is not running at PAGE_OFFSET.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Balbir Singh <bsingharora@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Anton Blanchard [Sat, 1 Oct 2016 10:41:56 +0000 (20:41 +1000)]
powerpc/pseries: Use H_CLEAR_HPT to clear MMU hash table during kexec
An hcall was recently added that does exactly what we need during kexec
- it clears the entire MMU hash table, ignoring any VRMA mappings.
Try it and fall back to the old method if we get a failure.
On a POWER8 box with 5TB of memory, this reduces the time it takes to
kexec a new kernel from from 4 minutes to 1 minute.
Signed-off-by: Anton Blanchard <anton@samba.org>
Tested-by: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>
[mpe: Split into separate functions and tweak function naming]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Denis Kirjanov [Wed, 21 Sep 2016 11:34:58 +0000 (14:34 +0300)]
i2c_powermac: shut up lockdep warning
That's unclear why lockdep shows the following warning but adding a
lockdep class to struct pmac_i2c_bus solves it
[ 20.507795] ======================================================
[ 20.507796] [ INFO: possible circular locking dependency detected ]
[ 20.507800] 4.8.0-rc7-00037-gd2ffb01 #21 Not tainted
[ 20.507801] -------------------------------------------------------
[ 20.507803] swapper/0/1 is trying to acquire lock:
[ 20.507818] (&bus->mutex){+.+.+.}, at: [<
c000000000052830>] .pmac_i2c_open+0x30/0x100
[ 20.507819]
[ 20.507819] but task is already holding lock:
[ 20.507829] (&policy->rwsem){+.+.+.}, at: [<
c00000000068adcc>] .cpufreq_online+0x1ac/0x9d0
[ 20.507830]
[ 20.507830] which lock already depends on the new lock.
[ 20.507830]
[ 20.507832]
[ 20.507832] the existing dependency chain (in reverse order) is:
[ 20.507837]
[ 20.507837] -> #4 (&policy->rwsem){+.+.+.}:
[ 20.507844] [<
c00000000082385c>] .down_write+0x6c/0x110
[ 20.507849] [<
c00000000068adcc>] .cpufreq_online+0x1ac/0x9d0
[ 20.507855] [<
c0000000004d76d8>] .subsys_interface_register+0xb8/0x110
[ 20.507860] [<
c000000000689bb0>] .cpufreq_register_driver+0x1d0/0x250
[ 20.507866] [<
c000000000b4f8f4>] .g5_cpufreq_init+0x9cc/0xa28
[ 20.507872] [<
c00000000000a98c>] .do_one_initcall+0x5c/0x1d0
[ 20.507878] [<
c000000000b0f86c>] .kernel_init_freeable+0x1ac/0x28c
[ 20.507883] [<
c00000000000b3bc>] .kernel_init+0x1c/0x140
[ 20.507887] [<
c0000000000098f4>] .ret_from_kernel_thread+0x58/0x64
[ 20.507894]
[ 20.507894] -> #3 (subsys mutex#2){+.+.+.}:
[ 20.507899] [<
c000000000820448>] .mutex_lock_nested+0xa8/0x590
[ 20.507903] [<
c0000000004d7f24>] .bus_probe_device+0x44/0xe0
[ 20.507907] [<
c0000000004d5208>] .device_add+0x508/0x730
[ 20.507911] [<
c0000000004dd528>] .register_cpu+0x118/0x190
[ 20.507916] [<
c000000000b14450>] .topology_init+0x148/0x248
[ 20.507921] [<
c00000000000a98c>] .do_one_initcall+0x5c/0x1d0
[ 20.507925] [<
c000000000b0f86c>] .kernel_init_freeable+0x1ac/0x28c
[ 20.507929] [<
c00000000000b3bc>] .kernel_init+0x1c/0x140
[ 20.507934] [<
c0000000000098f4>] .ret_from_kernel_thread+0x58/0x64
[ 20.507939]
[ 20.507939] -> #2 (cpu_add_remove_lock){+.+.+.}:
[ 20.507944] [<
c000000000820448>] .mutex_lock_nested+0xa8/0x590
[ 20.507950] [<
c000000000087a9c>] .register_cpu_notifier+0x2c/0x70
[ 20.507955] [<
c000000000b267e0>] .spawn_ksoftirqd+0x18/0x4c
[ 20.507959] [<
c00000000000a98c>] .do_one_initcall+0x5c/0x1d0
[ 20.507964] [<
c000000000b0f770>] .kernel_init_freeable+0xb0/0x28c
[ 20.507968] [<
c00000000000b3bc>] .kernel_init+0x1c/0x140
[ 20.507972] [<
c0000000000098f4>] .ret_from_kernel_thread+0x58/0x64
[ 20.507978]
[ 20.507978] -> #1 (&host->mutex){+.+.+.}:
[ 20.507982] [<
c000000000820448>] .mutex_lock_nested+0xa8/0x590
[ 20.507987] [<
c0000000000527e8>] .kw_i2c_open+0x18/0x30
[ 20.507991] [<
c000000000052894>] .pmac_i2c_open+0x94/0x100
[ 20.507995] [<
c000000000b220a0>] .smp_core99_probe+0x260/0x410
[ 20.507999] [<
c000000000b185bc>] .smp_prepare_cpus+0x280/0x2ac
[ 20.508003] [<
c000000000b0f748>] .kernel_init_freeable+0x88/0x28c
[ 20.508008] [<
c00000000000b3bc>] .kernel_init+0x1c/0x140
[ 20.508012] [<
c0000000000098f4>] .ret_from_kernel_thread+0x58/0x64
[ 20.508018]
[ 20.508018] -> #0 (&bus->mutex){+.+.+.}:
[ 20.508023] [<
c0000000000ed5b4>] .lock_acquire+0x84/0x100
[ 20.508027] [<
c000000000820448>] .mutex_lock_nested+0xa8/0x590
[ 20.508032] [<
c000000000052830>] .pmac_i2c_open+0x30/0x100
[ 20.508037] [<
c000000000052e14>] .pmac_i2c_do_begin+0x34/0x120
[ 20.508040] [<
c000000000056bc0>] .pmf_call_one+0x50/0xd0
[ 20.508045] [<
c00000000068ff1c>] .g5_pfunc_switch_volt+0x2c/0xc0
[ 20.508050] [<
c00000000068fecc>] .g5_pfunc_switch_freq+0x1cc/0x1f0
[ 20.508054] [<
c00000000068fc2c>] .g5_cpufreq_target+0x2c/0x40
[ 20.508058] [<
c0000000006873ec>] .__cpufreq_driver_target+0x23c/0x840
[ 20.508062] [<
c00000000068c798>] .cpufreq_gov_performance_limits+0x18/0x30
[ 20.508067] [<
c00000000068915c>] .cpufreq_start_governor+0xac/0x100
[ 20.508071] [<
c00000000068a788>] .cpufreq_set_policy+0x208/0x260
[ 20.508076] [<
c00000000068abdc>] .cpufreq_init_policy+0x6c/0xb0
[ 20.508081] [<
c00000000068ae70>] .cpufreq_online+0x250/0x9d0
[ 20.508085] [<
c0000000004d76d8>] .subsys_interface_register+0xb8/0x110
[ 20.508090] [<
c000000000689bb0>] .cpufreq_register_driver+0x1d0/0x250
[ 20.508094] [<
c000000000b4f8f4>] .g5_cpufreq_init+0x9cc/0xa28
[ 20.508099] [<
c00000000000a98c>] .do_one_initcall+0x5c/0x1d0
[ 20.508103] [<
c000000000b0f86c>] .kernel_init_freeable+0x1ac/0x28c
[ 20.508107] [<
c00000000000b3bc>] .kernel_init+0x1c/0x140
[ 20.508112] [<
c0000000000098f4>] .ret_from_kernel_thread+0x58/0x64
[ 20.508113]
[ 20.508113] other info that might help us debug this:
[ 20.508113]
[ 20.508121] Chain exists of:
[ 20.508121] &bus->mutex --> subsys mutex#2 --> &policy->rwsem
[ 20.508121]
[ 20.508123] Possible unsafe locking scenario:
[ 20.508123]
[ 20.508124] CPU0 CPU1
[ 20.508125] ---- ----
[ 20.508128] lock(&policy->rwsem);
[ 20.508132] lock(subsys mutex#2);
[ 20.508135] lock(&policy->rwsem);
[ 20.508138] lock(&bus->mutex);
[ 20.508139]
[ 20.508139] *** DEADLOCK ***
[ 20.508139]
[ 20.508141] 3 locks held by swapper/0/1:
[ 20.508150] #0: (cpu_hotplug.lock){++++++}, at: [<
c000000000087838>] .get_online_cpus+0x48/0xc0
[ 20.508159] #1: (subsys mutex#2){+.+.+.}, at: [<
c0000000004d7670>] .subsys_interface_register+0x50/0x110
[ 20.508168] #2: (&policy->rwsem){+.+.+.}, at: [<
c00000000068adcc>] .cpufreq_online+0x1ac/0x9d0
[ 20.508169]
[ 20.508169] stack backtrace:
[ 20.508173] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.8.0-rc7-00037-gd2ffb01 #21
[ 20.508175] Call Trace:
[ 20.508180] [
c0000000790c2b90] [
c00000000082cc70] .dump_stack+0xe0/0x14c (unreliable)
[ 20.508184] [
c0000000790c2c20] [
c000000000828c88] .print_circular_bug+0x350/0x388
[ 20.508188] [
c0000000790c2cd0] [
c0000000000ecb0c] .__lock_acquire+0x196c/0x1d30
[ 20.508192] [
c0000000790c2e50] [
c0000000000ed5b4] .lock_acquire+0x84/0x100
[ 20.508196] [
c0000000790c2f20] [
c000000000820448] .mutex_lock_nested+0xa8/0x590
[ 20.508201] [
c0000000790c3030] [
c000000000052830] .pmac_i2c_open+0x30/0x100
[ 20.508206] [
c0000000790c30c0] [
c000000000052e14] .pmac_i2c_do_begin+0x34/0x120
[ 20.508209] [
c0000000790c3150] [
c000000000056bc0] .pmf_call_one+0x50/0xd0
[ 20.508213] [
c0000000790c31e0] [
c00000000068ff1c] .g5_pfunc_switch_volt+0x2c/0xc0
[ 20.508217] [
c0000000790c3250] [
c00000000068fecc] .g5_pfunc_switch_freq+0x1cc/0x1f0
[ 20.508221] [
c0000000790c3320] [
c00000000068fc2c] .g5_cpufreq_target+0x2c/0x40
[ 20.508226] [
c0000000790c3390] [
c0000000006873ec] .__cpufreq_driver_target+0x23c/0x840
[ 20.508230] [
c0000000790c3440] [
c00000000068c798] .cpufreq_gov_performance_limits+0x18/0x30
[ 20.508235] [
c0000000790c34b0] [
c00000000068915c] .cpufreq_start_governor+0xac/0x100
[ 20.508239] [
c0000000790c3530] [
c00000000068a788] .cpufreq_set_policy+0x208/0x260
[ 20.508244] [
c0000000790c35d0] [
c00000000068abdc] .cpufreq_init_policy+0x6c/0xb0
[ 20.508249] [
c0000000790c3940] [
c00000000068ae70] .cpufreq_online+0x250/0x9d0
[ 20.508253] [
c0000000790c3a30] [
c0000000004d76d8] .subsys_interface_register+0xb8/0x110
[ 20.508258] [
c0000000790c3ad0] [
c000000000689bb0] .cpufreq_register_driver+0x1d0/0x250
[ 20.508262] [
c0000000790c3b60] [
c000000000b4f8f4] .g5_cpufreq_init+0x9cc/0xa28
[ 20.508267] [
c0000000790c3c20] [
c00000000000a98c] .do_one_initcall+0x5c/0x1d0
[ 20.508271] [
c0000000790c3d00] [
c000000000b0f86c] .kernel_init_freeable+0x1ac/0x28c
[ 20.508276] [
c0000000790c3db0] [
c00000000000b3bc] .kernel_init+0x1c/0x140
[ 20.508280] [
c0000000790c3e30] [
c0000000000098f4] .ret_from_kernel_thread+0x58/0x64
Signed-off-by: Denis Kirjanov <kda@linux-powerpc.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Nicholas Piggin [Thu, 13 Oct 2016 02:07:14 +0000 (13:07 +1100)]
powerpc: Make _ASM_NOKPROBE_SYMBOL a noop when KPROBES not defined
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Nicholas Piggin [Thu, 13 Oct 2016 05:42:55 +0000 (16:42 +1100)]
powerpc: Build-time sort the exception table
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Nicholas Piggin [Fri, 14 Oct 2016 05:47:31 +0000 (16:47 +1100)]
powerpc: Add support for relative exception tables
This halves the exception table size on 64-bit builds, and it allows
build-time sorting of exception tables to work on relocated kernels.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
[mpe: Minor asm fixups and bits to keep the selftests working]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Nicholas Piggin [Thu, 13 Oct 2016 05:42:53 +0000 (16:42 +1100)]
powerpc: EX_TABLE macro for exception tables
This macro is taken from s390, and allows more flexibility in
changing exception table format.
mpe: Put it in ppc_asm.h and only define one version using
stringinfy_in_c(). Add some empty definitions and headers to keep the
selftests happy.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Michael Ellerman [Tue, 1 Nov 2016 04:01:18 +0000 (15:01 +1100)]
selftests/powerpc: Fail load_unaligned_zeropad on miscompare
If the result returned by load_unaligned_zeropad() doesn't match what we
expect we should fail the test!
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Michael Ellerman [Tue, 1 Nov 2016 04:01:07 +0000 (15:01 +1100)]
selftests/powerpc: Abort load_unaligned_zeropad on unhandled SEGV
If the load unaligned zeropad test takes a SEGV which can't be handled,
we increment segv_error, print the offending NIP and then return without
taking any further action. In almost all cases this means we'll just
take the SEGV again, and loop eternally spamming the console.
Instead just abort(), it's a fatal error in the test. The test harness
will notice that the child died and print a nice message for us.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Michael Ellerman [Wed, 26 Oct 2016 03:51:12 +0000 (14:51 +1100)]
powerpc/module: Add support for R_PPC64_REL32 relocations
We haven't seen these before, but the soon to be merged relative
exception tables support causes them to be generated.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Michael Ellerman [Fri, 14 Oct 2016 04:58:28 +0000 (15:58 +1100)]
powerpc/asm: Allow including ppc_asm.h in asm files
There's no reason to #error if we include ppc_asm.h in asm files, the
ifdef already prevents any problems.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Nicholas Piggin [Thu, 13 Oct 2016 03:43:52 +0000 (14:43 +1100)]
powerpc/64s: Reduce exception alignment
Exception handlers are aligned to 128 bytes (L1 cache) on 64s, which is
overkill. It can reduce the icache footprint of any individual exception
path. However taken as a whole, the expansion in icache footprint seems
likely to be counter-productive and cause more total misses.
Create IFETCH_ALIGN_SHIFT/BYTES, which should give optimal ifetch
alignment with much more reasonable alignment. This saves 1792 bytes
from head_64.o text with an allmodconfig build.
Other subarchitectures should define appropriate IFETCH_ALIGN_SHIFT
values if this becomes more widely used.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Rui Teng [Thu, 25 Aug 2016 06:31:10 +0000 (14:31 +0800)]
powerpc: Remove suspect CONFIG_PPC_BOOK3E #ifdefs in nohash/64/pgtable.h
There are three #ifdef CONFIG_PPC_BOOK3E sections in nohash/64/pgtable.h.
And there should be no configurations possible which use nohash/64/pgtable.h
but don't also enable CONFIG_PPC_BOOK3E.
Suggested-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Rui Teng <rui.teng@linux.vnet.ibm.com>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Anton Blanchard [Tue, 27 Sep 2016 14:10:16 +0000 (22:10 +0800)]
selftests/powerpc: Add Anton's null_syscall benchmark to the selftests
Pull in a version of Anton's null_syscall benchmark:
http://ozlabs.org/~anton/junkcode/null_syscall.c
Suggested-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Anton Blanchard <anton@au.ibm.com>
Signed-off-by: Rui Teng <rui.teng@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Linus Torvalds [Sun, 13 Nov 2016 18:32:32 +0000 (10:32 -0800)]
Linux 4.9-rc5
Linus Torvalds [Sun, 13 Nov 2016 18:28:53 +0000 (10:28 -0800)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm
Pull KVM fixes from Paolo Bonzini:
"ARM fixes. There are a couple pending x86 patches but they'll have to
wait for next week"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: arm/arm64: vgic: Kick VCPUs when queueing already pending IRQs
KVM: arm/arm64: vgic: Prevent access to invalid SPIs
arm/arm64: KVM: Perform local TLB invalidation when multiplexing vcpus on a single CPU
Linus Torvalds [Sun, 13 Nov 2016 18:26:05 +0000 (10:26 -0800)]
Merge branch 'media-fixes' (patches from Mauro)
Merge media fixes from Mauro Carvalho Chehab:
"This contains two patches fixing problems with my patch series meant
to make USB drivers to work again after the DMA on stack changes.
The last patch on this series is actually not related to DMA on stack.
It solves a longstanding bug affecting module unload, causing
module_put() to be called twice. It was reported by the user who
reported and tested the issues with the gp8psk driver with the DMA
fixup patches. As we're late at -rc cycle, maybe you prefer to not
apply it right now. If this is the case, I'll add to the pile of
patches for 4.10.
Exceptionally this time, I'm sending the patches via e-mail, because
I'm on another trip, and won't be able to use the usual procedure
until Monday. Also, it is only three patches, and you followed already
the discussions about the first one"
* emailed patches from Mauro Carvalho Chehab <mchehab@osg.samsung.com>:
gp8psk: Fix DVB frontend attach
gp8psk: fix gp8psk_usb_in_op() logic
dvb-usb: move data_mutex to struct dvb_usb_device
Linus Torvalds [Sun, 13 Nov 2016 18:24:08 +0000 (10:24 -0800)]
Merge tag 'char-misc-4.9-rc5' of git://git./linux/kernel/git/gregkh/char-misc
Pull char/misc fixes from Greg KH:
"Here are three small driver fixes for some reported issues for
4.9-rc5.
One for the hyper-v subsystem, fixing up a naming issue that showed up
in 4.9-rc1, one mei driver fix, and one fix for parallel ports,
resolving a reported regression.
All have been in linux-next with no reported issues"
* tag 'char-misc-4.9-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
ppdev: fix double-free of pp->pdev->name
vmbus: make sysfs names consistent with PCI
mei: bus: fix received data size check in NFC fixup
Linus Torvalds [Sun, 13 Nov 2016 18:22:07 +0000 (10:22 -0800)]
Merge tag 'driver-core-4.9-rc5' of git://git./linux/kernel/git/gregkh/driver-core
Pull driver core fixes from Greg KH:
"Here are two driver core fixes for 4.9-rc5.
The first resolves an issue with some drivers not liking to be unbound
and bound again (if CONFIG_DEBUG_TEST_DRIVER_REMOVE is enabled), which
solves some reported problems with graphics and storage drivers. The
other resolves a smatch error with the 4.9-rc1 driver core changes
around this feature.
Both have been in linux-next with no reported issues"
* tag 'driver-core-4.9-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
driver core: fix smatch warning on dev->bus check
driver core: skip removal test for non-removable drivers
Linus Torvalds [Sun, 13 Nov 2016 18:13:33 +0000 (10:13 -0800)]
Merge tag 'staging-4.9-rc5' of git://git./linux/kernel/git/gregkh/staging
Pull staging/IIO fixes from Grek KH:
"Here are a few small staging and iio driver fixes for reported issues.
The last one was cherry-picked from my -next branch to resolve a build
warning that Arnd fixed, in his quest to be able to turn
-Wmaybe-uninitialized back on again. That patch, and all of the
others, have been in linux-next for a while with no reported issues"
* tag 'staging-4.9-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
iio: maxim_thermocouple: detect invalid storage size in read()
staging: nvec: remove managed resource from PS2 driver
Revert "staging: nvec: ps2: change serio type to passthrough"
drivers: staging: nvec: remove bogus reset command for PS/2 interface
staging: greybus: arche-platform: fix device reference leak
staging: comedi: ni_tio: fix buggy ni_tio_clock_period_ps() return value
staging: sm750fb: Fix bugs introduced by early commits
iio: hid-sensors: Increase the precision of scale to fix wrong reading interpretation.
iio: orientation: hid-sensor-rotation: Add PM function (fix non working driver)
iio: st_sensors: fix scale configuration for h3lis331dl
staging: iio: ad5933: avoid uninitialized variable in error case
Linus Torvalds [Sun, 13 Nov 2016 18:10:46 +0000 (10:10 -0800)]
Merge tag 'usb-4.9-rc5' of git://git./linux/kernel/git/gregkh/usb
Pull USB / PHY fixes from Greg KH:
"Here are a number of small USB and PHY driver fixes for 4.9-rc5
Nothing major, just small fixes for reported issues, all of these have
been in linux-next for a while with no reported issues"
* tag 'usb-4.9-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
USB: cdc-acm: fix TIOCMIWAIT
cdc-acm: fix uninitialized variable
drivers/usb: Skip auto handoff for TI and RENESAS usb controllers
usb: musb: remove duplicated actions
usb: musb: da8xx: Don't print phy error on -EPROBE_DEFER
phy: sun4i: check PMU presence when poking unknown bit of pmu
phy-rockchip-pcie: remove deassert of phy_rst from exit callback
phy: da8xx-usb: rename the ohci device to ohci-da8xx
phy: Add reset callback for not generic phy
uwb: fix device reference leaks
usb: gadget: u_ether: remove interrupt throttling
usb: dwc3: st: add missing <linux/pinctrl/consumer.h> include
usb: dwc3: Fix error handling for core init
Linus Torvalds [Sun, 13 Nov 2016 18:09:04 +0000 (10:09 -0800)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull more block fixes from Jens Axboe:
"Since I mistakenly left out the lightnvm regression fix yesterday and
the aoeblk seems adequately tested at this point, might as well send
out another pull to make -rc5"
* 'for-linus' of git://git.kernel.dk/linux-block:
aoe: fix crash in page count manipulation
lightnvm: invalid offset calculation for lba_shift
Linus Torvalds [Sun, 13 Nov 2016 18:07:08 +0000 (10:07 -0800)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"The megaraid_sas patch in here fixes a major regression in the last
fix set that made all megaraid_sas cards unusable. It turns out no-one
had actually tested such an "obvious" fix, sigh. The fix for the fix
has been tested ...
The next most serious is the vmw_pvscsi abort problem which basically
means that aborts don't work on the vmware paravirt devices and error
handling always escalates to reset.
The rest are an assortment of missed reference counting in certain
paths and corner case bugs that show up on some architectures"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: megaraid_sas: fix macro MEGASAS_IS_LOGICAL to avoid regression
scsi: qla2xxx: fix invalid DMA access after command aborts in PCI device remove
scsi: qla2xxx: do not queue commands when unloading
scsi: libcxgbi: fix incorrect DDP resource cleanup
scsi: qla2xxx: Fix scsi scan hang triggered if adapter fails during init
scsi: scsi_dh_alua: Fix a reference counting bug
scsi: vmw_pvscsi: return SUCCESS for successful command aborts
scsi: mpt3sas: Fix for block device of raid exists even after deleting raid disk
scsi: scsi_dh_alua: fix missing kref_put() in alua_rtpg_work()
Linus Torvalds [Sun, 13 Nov 2016 18:04:55 +0000 (10:04 -0800)]
Merge tag 'clk-fixes-for-linus' of git://git./linux/kernel/git/clk/linux
Pull clk fixes from Stephen Boyd:
"The typical collection of minor bug fixes in clk drivers. We don't
have anything in the core framework here, just driver fixes.
There's a boot fix for Samsung devices and a safety measure for qoriq
to prevent CPUs from running too fast. There's also a fix for i.MX6Q
to properly handle audio clock rates. We also have some "that's
obviously wrong" fixes like bad NULL pointer checks in the MPP driver
and a poor usage of __pa in the xgene clk driver that are fixed here"
* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
clk: mmp: pxa910: fix return value check in pxa910_clk_init()
clk: mmp: pxa168: fix return value check in pxa168_clk_init()
clk: mmp: mmp2: fix return value check in mmp2_clk_init()
clk: qoriq: Don't allow CPU clocks higher than starting value
clk: imx: fix integer overflow in AV PLL round rate
clk: xgene: Don't call __pa on ioremaped address
clk/samsung: Use CLK_OF_DECLARE_DRIVER initialization method for CLKOUT
clk: rockchip: don't return NULL when failing to register ddrclk branch
Mauro Carvalho Chehab [Sat, 12 Nov 2016 14:46:28 +0000 (12:46 -0200)]
gp8psk: Fix DVB frontend attach
The DVB binding schema at the DVB core assumes that the frontend is a
separate driver. Faling to do that causes OOPS when the module is
removed, as it tries to do a symbol_put_addr on an internal symbol,
causing craches like:
WARNING: CPU: 1 PID: 28102 at kernel/module.c:1108 module_put+0x57/0x70
Modules linked in: dvb_usb_gp8psk(-) dvb_usb dvb_core nvidia_drm(PO) nvidia_modeset(PO) snd_hda_codec_hdmi snd_hda_intel snd_hda_codec snd_hwdep snd_hda_core snd_pcm snd_timer snd soundcore nvidia(PO) [last unloaded: rc_core]
CPU: 1 PID: 28102 Comm: rmmod Tainted: P WC O 4.8.4-build.1 #1
Hardware name: MSI MS-7309/MS-7309, BIOS V1.12 02/23/2009
Call Trace:
dump_stack+0x44/0x64
__warn+0xfa/0x120
module_put+0x57/0x70
module_put+0x57/0x70
warn_slowpath_null+0x23/0x30
module_put+0x57/0x70
gp8psk_fe_set_frontend+0x460/0x460 [dvb_usb_gp8psk]
symbol_put_addr+0x27/0x50
dvb_usb_adapter_frontend_exit+0x3a/0x70 [dvb_usb]
From Derek's tests:
"Attach bug is fixed, tuning works, module unloads without
crashing. Everything seems ok!"
Reported-by: Derek <user.vdr@gmail.com>
Tested-by: Derek <user.vdr@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mauro Carvalho Chehab [Sat, 12 Nov 2016 14:46:27 +0000 (12:46 -0200)]
gp8psk: fix gp8psk_usb_in_op() logic
Commit
bc29131ecb10 ("[media] gp8psk: don't do DMA on stack") fixed the
usage of DMA on stack, but the memcpy was wrong for gp8psk_usb_in_op().
Fix it.
From Derek's email:
"Fix confirmed using 2 different Skywalker models with
HD mpeg4, SD mpeg2."
Suggested-by: Johannes Stezenbach <js@linuxtv.org>
Fixes:
bc29131ecb10 ("[media] gp8psk: don't do DMA on stack")
Tested-by: Derek <user.vdr@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mauro Carvalho Chehab [Sat, 12 Nov 2016 14:46:26 +0000 (12:46 -0200)]
dvb-usb: move data_mutex to struct dvb_usb_device
The data_mutex is initialized too late, as it is needed for
each device driver's power control, causing an OOPS:
dvb-usb: found a 'TerraTec/qanu USB2.0 Highspeed DVB-T Receiver' in warm state.
BUG: unable to handle kernel NULL pointer dereference at (null)
IP: [<
ffffffff846617af>] __mutex_lock_slowpath+0x6f/0x100 PGD 0
Oops: 0002 [#1] SMP
Modules linked in: dvb_usb_cinergyT2(+) dvb_usb
CPU: 0 PID: 2029 Comm: modprobe Not tainted 4.9.0-rc4-dvbmod #24
Hardware name: FUJITSU LIFEBOOK A544/FJNBB35 , BIOS Version 1.17 05/09/2014
task:
ffff88020e943840 task.stack:
ffff8801f36ec000
RIP: 0010:[<
ffffffff846617af>] [<
ffffffff846617af>] __mutex_lock_slowpath+0x6f/0x100
RSP: 0018:
ffff8801f36efb10 EFLAGS:
00010282
RAX:
0000000000000000 RBX:
ffff88021509bdc8 RCX:
00000000c0000100
RDX:
0000000000000001 RSI:
0000000000000000 RDI:
ffff88021509bdcc
RBP:
ffff8801f36efb58 R08:
ffff88021f216320 R09:
0000000000100000
R10:
ffff88021f216320 R11:
00000023fee6c5a1 R12:
ffff88020e943840
R13:
ffff88021509bdcc R14:
00000000ffffffff R15:
ffff88021509bdd0
FS:
00007f21adb86740(0000) GS:
ffff88021f200000(0000) knlGS:
0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
CR2:
0000000000000000 CR3:
0000000215bce000 CR4:
00000000001406f0
Call Trace:
mutex_lock+0x16/0x25
cinergyt2_power_ctrl+0x1f/0x60 [dvb_usb_cinergyT2]
dvb_usb_device_init+0x21e/0x5d0 [dvb_usb]
cinergyt2_usb_probe+0x21/0x50 [dvb_usb_cinergyT2]
usb_probe_interface+0xf3/0x2a0
driver_probe_device+0x208/0x2b0
__driver_attach+0x87/0x90
driver_probe_device+0x2b0/0x2b0
bus_for_each_dev+0x52/0x80
bus_add_driver+0x1a3/0x220
driver_register+0x56/0xd0
usb_register_driver+0x77/0x130
do_one_initcall+0x46/0x180
free_vmap_area_noflush+0x38/0x70
kmem_cache_alloc+0x84/0xc0
do_init_module+0x50/0x1be
load_module+0x1d8b/0x2100
find_symbol_in_section+0xa0/0xa0
SyS_finit_module+0x89/0x90
entry_SYSCALL_64_fastpath+0x13/0x94
Code: e8 a7 1d 00 00 8b 03 83 f8 01 0f 84 97 00 00 00 48 8b 43 10 4c 8d 7b 08 48 89 63 10 4c 89 3c 24 41 be ff ff ff ff 48 89 44 24 08 <48> 89 20 4c 89 64 24 10 eb 1a 49 c7 44 24 08 02 00 00 00 c6 43 RIP [<
ffffffff846617af>] __mutex_lock_slowpath+0x6f/0x100 RSP <
ffff8801f36efb10>
CR2:
0000000000000000
So, move it to the struct dvb_usb_device and initialize it
before calling the driver's callbacks.
Reported-by: Jörg Otte <jrg.otte@gmail.com>
Tested-by: Jörg Otte <jrg.otte@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Arnd Bergmann [Tue, 25 Oct 2016 15:55:04 +0000 (17:55 +0200)]
iio: maxim_thermocouple: detect invalid storage size in read()
As found by gcc -Wmaybe-uninitialized, having a storage_bytes value other
than 2 or 4 will result in undefined behavior:
drivers/iio/temperature/maxim_thermocouple.c: In function 'maxim_thermocouple_read':
drivers/iio/temperature/maxim_thermocouple.c:141:5: error: 'ret' may be used uninitialized in this function [-Werror=maybe-uninitialized]
This probably cannot happen, but returning -EINVAL here is appropriate
and makes gcc happy and the code more robust.
Fixes:
231147ee77f3 ("iio: maxim_thermocouple: Align 16 bit big endian value of raw reads")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
(cherry picked from commit
32cb7d27e65df9daa7cee8f1fdf7b259f214bee2)
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Jens Axboe [Sat, 12 Nov 2016 01:28:50 +0000 (18:28 -0700)]
aoe: fix crash in page count manipulation
aoeblk contains some mysterious code, that wants to elevate the bio
vec page counts while it's under IO. That is not needed, it's
fragile, and it's causing kernel oopses for some.
Reported-by: Tested-by: Don Koch <kochd@us.ibm.com>
Tested-by: Tested-by: Don Koch <kochd@us.ibm.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Matias Bjørling [Thu, 10 Nov 2016 11:26:57 +0000 (12:26 +0100)]
lightnvm: invalid offset calculation for lba_shift
The ns->lba_shift assumes its value to be the logarithmic of the
LA size. A previous patch duplicated the lba_shift calculation into
lightnvm. It prematurely also subtracted a 512byte shift, which commonly
is applied per-command. The 512byte shift being subtracted twice led to
data loss when restoring the logical to physical mapping table from
device and when issuing I/O commands using rrpc.
Fix offset by removing the 512byte shift subtraction when calculating
lba_shift.
Fixes:
b0b4e09c1ae7 "lightnvm: control life of nvm_dev in driver"
Reported-by: Javier González <javier@cnexlabs.com>
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>