| Commit message (Collapse) | Author | Age | Files | Lines |
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Pull microblaze update from Michal Simek:
"Microblaze changes.
After my discussion with Arnd I have also added there asm-generic io
patch which is Acked by him and Geert."
* 'next' of git://git.monstr.eu/linux-2.6-microblaze:
asm-generic: io: Fix ioread16/32be and iowrite16/32be
microblaze: Do not use module.h in files which are not modules
microblaze: Fix coding style issues
microblaze: Add missing return from debugfs_tlb
microblaze: Makefile clean
microblaze: Add .gitignore entries for auto-generated files
microblaze: Fix strncpy_from_user macro
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Based on the patch:
"lib: reduce the use of module.h wherever possible"
(sha1: 8bc3bcc93a2b4e47d5d410146f6546bca6171663)
fix all microblaze files which are not modules.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
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Fix coding style issues reported by checkpatch.pl.
Signed-off-by: Michal Simek <monstr@monstr.eu>
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Function must return any value.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
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Remove unnecessary variables
Signed-off-by: Jason Wu <huanyu@xilinx.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>
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Add .gitignore entries for files which are generated during the build process.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
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Problem happens when len in strncpy_from_user is setup
and passing string has len-1 chars + \0 terminated
character. In this case was returned incorrect length
of the string.
It should always retunrs the length of the string
(not including the trailing NULL).
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI and power management fixes from Rafael Wysocki:
- Fixes for blackfin and microblaze build problems introduced by the
removal of global pm_idle. From Lars-Peter Clausen.
- OPP core build fix from Shawn Guo.
- Error condition check fix for the new imx6q-cpufreq driver from Wei
Yongjun.
- Fix for an AER driver crash related to the lack of APEI
initialization for acpi=off. From Rafael J Wysocki.
- Fix for a USB breakage on Thinkpad T430 related to ACPI power
resources and PCI wakeup from Rafael J. Wysocki.
* tag 'pm+acpi-fixes-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI / PM: Take unusual configurations of power resources into account
imx6q-cpufreq: fix return value check in imx6q_cpufreq_probe()
PM / OPP: fix condition for empty of_init_opp_table()
ACPI / APEI: Fix crash in apei_hest_parse() for acpi=off
microblaze idle: Fix compile error
blackfin idle: Fix compile error
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Commit def8203 ("microblaze idle: delete pm_idle") introduced the following
compile error:
arch/microblaze/kernel/process.c: In function 'cpu_idle':
arch/microblaze/kernel/process.c:100: error: 'idle' undeclared (first use in this function)
arch/microblaze/kernel/process.c:100: error: (Each undeclared identifier is reported only once
arch/microblaze/kernel/process.c:100: error: for each function it appears in.)
arch/microblaze/kernel/process.c:106: error: implicit declaration of function 'idle'
This patch fixes it.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Len Brown <len.brown@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal
Pull signal handling cleanups from Al Viro:
"This is the first pile; another one will come a bit later and will
contain SYSCALL_DEFINE-related patches.
- a bunch of signal-related syscalls (both native and compat)
unified.
- a bunch of compat syscalls switched to COMPAT_SYSCALL_DEFINE
(fixing several potential problems with missing argument
validation, while we are at it)
- a lot of now-pointless wrappers killed
- a couple of architectures (cris and hexagon) forgot to save
altstack settings into sigframe, even though they used the
(uninitialized) values in sigreturn; fixed.
- microblaze fixes for delivery of multiple signals arriving at once
- saner set of helpers for signal delivery introduced, several
architectures switched to using those."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal: (143 commits)
x86: convert to ksignal
sparc: convert to ksignal
arm: switch to struct ksignal * passing
alpha: pass k_sigaction and siginfo_t using ksignal pointer
burying unused conditionals
make do_sigaltstack() static
arm64: switch to generic old sigaction() (compat-only)
arm64: switch to generic compat rt_sigaction()
arm64: switch compat to generic old sigsuspend
arm64: switch to generic compat rt_sigqueueinfo()
arm64: switch to generic compat rt_sigpending()
arm64: switch to generic compat rt_sigprocmask()
arm64: switch to generic sigaltstack
sparc: switch to generic old sigsuspend
sparc: COMPAT_SYSCALL_DEFINE does all sign-extension as well as SYSCALL_DEFINE
sparc: kill sign-extending wrappers for native syscalls
kill sparc32_open()
sparc: switch to use of generic old sigaction
sparc: switch sys_compat_rt_sigaction() to COMPAT_SYSCALL_DEFINE
mips: switch to generic sys_fork() and sys_clone()
...
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__ARCH_WANT_SYS_RT_SIGACTION,
__ARCH_WANT_SYS_RT_SIGSUSPEND,
__ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND,
__ARCH_WANT_COMPAT_SYS_SCHED_RR_GET_INTERVAL - not used anymore
CONFIG_GENERIC_{SIGALTSTACK,COMPAT_RT_SIG{ACTION,QUEUEINFO,PENDING,PROCMASK}} -
can be assumed always set.
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Better not to break block which do work together.
Signed-off-by: Michal Simek <monstr@monstr.eu>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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We need to keep building sigframes until no pending signals remain.
Wrap do_notify_resume() calls into loops; do _not_ allow syscall
restart logics to trigger after the first iteration.
Incidentally, comments about pending signals that should (somehow)
be in r18 are pure BS. Doesn't work that way and cannot work that
way, sorry...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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solution a-la arm one - pick a callee-saved register (r30), set it
non-zero when entering a syscall, have sigreturn wrapper zero it out
and pass the value in it to do_notify_resume() as "in_syscall" (actually,
"restarts allowed") argument.
Note that we don't give a damn about ret_from_fork() - return value
is not restart-worthy anyway.
Possible remaining bug: on !MMU we still have _debug_exception()
restartable. If it hits with -ERESTART_... accidentally in r3, fun happens.
MMU does _not_ have _debug_exception() restartable. If that's decided to
be a bug (as I strongly suspect it to be), we'll just need to replace
setting r30 to 1 with setting r30 to 0 in !MMU _debug_exception().
Up to microblaze maintainers...
[folded a fix from Michal]
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Only one caller hasn't done it in assembler - work_pending on !MMU.
Everything else can't reach do_notify_resume() if we are returning
to kernel mode, so move that check to that sole caller and make
do_notify_resume() reachable only when returning to userland.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core patches from Greg Kroah-Hartman:
"Here is the big driver core merge for 3.9-rc1
There are two major series here, both of which touch lots of drivers
all over the kernel, and will cause you some merge conflicts:
- add a new function called devm_ioremap_resource() to properly be
able to check return values.
- remove CONFIG_EXPERIMENTAL
Other than those patches, there's not much here, some minor fixes and
updates"
Fix up trivial conflicts
* tag 'driver-core-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (221 commits)
base: memory: fix soft/hard_offline_page permissions
drivercore: Fix ordering between deferred_probe and exiting initcalls
backlight: fix class_find_device() arguments
TTY: mark tty_get_device call with the proper const values
driver-core: constify data for class_find_device()
firmware: Ignore abort check when no user-helper is used
firmware: Reduce ifdef CONFIG_FW_LOADER_USER_HELPER
firmware: Make user-mode helper optional
firmware: Refactoring for splitting user-mode helper code
Driver core: treat unregistered bus_types as having no devices
watchdog: Convert to devm_ioremap_resource()
thermal: Convert to devm_ioremap_resource()
spi: Convert to devm_ioremap_resource()
power: Convert to devm_ioremap_resource()
mtd: Convert to devm_ioremap_resource()
mmc: Convert to devm_ioremap_resource()
mfd: Convert to devm_ioremap_resource()
media: Convert to devm_ioremap_resource()
iommu: Convert to devm_ioremap_resource()
drm: Convert to devm_ioremap_resource()
...
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The CONFIG_EXPERIMENTAL config item has not carried much meaning for a
while now and is almost always enabled by default. As agreed during the
Linux kernel summit, remove it from any "depends on" lines in Kconfigs.
Acked-by: Michal Simek <monstr@monstr.eu>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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pm_idle on microblaze served no purpose.
Signed-off-by: Len Brown <len.brown@intel.com>
Cc: microblaze-uclinux@itee.uq.edu.au
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Pull microblaze update from Michal Simek:
"This fixes noMMU kernel and I have also added defconfig updates which
fix issue with one external dependency and enable all xilinx device
drivers for 0-day testing system.
Additionally wire up finit_module system call, and do highmem fixup
and pci warnings reported by the 0-day testing system"
* 'next' of git://git.monstr.eu/linux-2.6-microblaze:
microblaze: Update microblaze defconfigs
microblaze: Fix pci compilation and sparse warnings
microblaze: Add finit_module syscall
microblaze: Kill __kmap_atomic()
microblaze: Change section flags for noMMU
microblaze: Microblaze wants sys_fork for noMMU too
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The main reason is 0-day testing system which can directly
use these defconfigs for testing.
Enable support for all xilinx drivers which Microblaze
can use and disable dependency on external rootfs.cpio.
There is only one exception which is axi ethernet driver
which still uses NO_IRQ which is not defined for Microblaze.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
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Warning log:
CHECK arch/microblaze/pci/pci-common.c
arch/microblaze/pci/pci-common.c:290:14: warning: Using plain integer as NULL pointer
arch/microblaze/pci/pci-common.c:1127:6: warning: symbol
'pcibios_allocate_bus_resources' was not declared. Should it be static?
arch/microblaze/pci/pci-common.c:1436:61: warning: incorrect type in argument 3 (different base types)
arch/microblaze/pci/pci-common.c:1436:61: expected unsigned int [unsigned] [usertype] offset
arch/microblaze/pci/pci-common.c:1436:61: got void [noderef] <asn:2>*
CC arch/microblaze/pci/pci-common.o
arch/microblaze/pci/pci-common.c: In function 'pci_proc_domain':
arch/microblaze/pci/pci-common.c:825:25: warning: unused variable 'hose' [-Wunused-variable]
arch/microblaze/pci/pci-common.c: In function 'pcibios_allocate_bus_resources':
arch/microblaze/pci/pci-common.c:1182:1: warning: label 'clear_resource' defined but not used [-Wunused-label]
arch/microblaze/pci/pci-common.c: In function 'pcibios_setup_phb_resources':
arch/microblaze/pci/pci-common.c:1436:2: warning: passing argument 3 of
'pci_add_resource_offset' makes integer from pointer without a cast [enabled by default]
include/linux/pci.h:999:6: note: expected 'resource_size_t' but argument is of type 'void *'
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
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Add finit_module syscall to the syscall list.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
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This should be the part of this patch:
"highmem: kill all __kmap_atomic()"
(sha1: a24401bcf4a67c8fe17e649e74eeb09b08b79ef5)
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
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All files which uses user unified macros from uaccess.h
(get_user/put_user/clear_user/copy_tofrom_user/
strnlen_user and strncpy_user) generate this
warning messages:
Assembler messages:
Warning: ignoring changed section attributes for .discard
Setting up discard executable section flang for __EX_TABLE_SECTION
macro removed all these warnings.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
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The patch "generic sys_fork / sys_vfork / sys_clone"
(sha1: d2125043aebf7f53cd1c72115c17b01d0bc06ce1)
introduced generic sys_fork with implementation for noMMU
which returns EINVAL for noMMU.
and the patch "microblaze: switch to generic fork/vfork/clone"
(sha1: f3268edbe6fe0ce56e62c6d6b14640aeb04864b7)
enable sys_fork only for MMU which is causing compilation
failure on noMMU system.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
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This fixes up all of the smaller arches that had __dev* markings for
their platform-specific drivers.
CONFIG_HOTPLUG is going away as an option. As a result, the __dev*
markings need to be removed.
This change removes the use of __devinit, __devexit_p, __devinitdata,
__devinitconst, and __devexit from these drivers.
Based on patches originally written by Bill Pemberton, but redone by me
in order to handle some of the coding style issues better, by hand.
Cc: Bill Pemberton <wfp5p@virginia.edu>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Haavard Skinnemoen <hskinnemoen@gmail.com>
Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: Mikael Starvik <starvik@axis.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Hirokazu Takata <takata@linux-m32r.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Cc: Helge Deller <deller@gmx.de>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Chen Liqin <liqin.chen@sunplusct.com>
Cc: Lennox Wu <lennox.wu@gmail.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Cc: Bob Liu <lliubbo@gmail.com>
Cc: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Myron Stowe <myron.stowe@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Thierry Reding <thierry.reding@avionic-design.de>
Cc: Greg Ungerer <gerg@uclinux.org>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: "Srivatsa S. Bhat" <srivatsa.bhat@linux.vnet.ibm.com>
Cc: Mark Salter <msalter@redhat.com>
Cc: Yong Zhang <yong.zhang0@gmail.com>
Cc: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Cc: Jan Glauber <jang@linux.vnet.ibm.com>
Cc: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Cc: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal
Pull signal handling cleanups from Al Viro:
"sigaltstack infrastructure + conversion for x86, alpha and um,
COMPAT_SYSCALL_DEFINE infrastructure.
Note that there are several conflicts between "unify
SS_ONSTACK/SS_DISABLE definitions" and UAPI patches in mainline;
resolution is trivial - just remove definitions of SS_ONSTACK and
SS_DISABLED from arch/*/uapi/asm/signal.h; they are all identical and
include/uapi/linux/signal.h contains the unified variant."
Fixed up conflicts as per Al.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal:
alpha: switch to generic sigaltstack
new helpers: __save_altstack/__compat_save_altstack, switch x86 and um to those
generic compat_sys_sigaltstack()
introduce generic sys_sigaltstack(), switch x86 and um to it
new helper: compat_user_stack_pointer()
new helper: restore_altstack()
unify SS_ONSTACK/SS_DISABLE definitions
new helper: current_user_stack_pointer()
missing user_stack_pointer() instances
Bury the conditionals from kernel_thread/kernel_execve series
COMPAT_SYSCALL_DEFINE: infrastructure
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for the architectures that have usp in pt_regs and do not have
user_stack_pointer() already defined.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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All architectures have
CONFIG_GENERIC_KERNEL_THREAD
CONFIG_GENERIC_KERNEL_EXECVE
__ARCH_WANT_SYS_EXECVE
None of them have __ARCH_WANT_KERNEL_EXECVE and there are only two callers
of kernel_execve() (which is a trivial wrapper for do_execve() now) left.
Kill the conditionals and make both callers use do_execve().
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull IOMMU updates from Joerg Roedel:
"A few new features this merge-window. The most important one is
probably, that dma-debug now warns if a dma-handle is not checked with
dma_mapping_error by the device driver. This requires minor changes
to some architectures which make use of dma-debug. Most of these
changes have the respective Acks by the Arch-Maintainers.
Besides that there are updates to the AMD IOMMU driver for refactor
the IOMMU-Groups support and to make sure it does not trigger a
hardware erratum.
The OMAP changes (for which I pulled in a branch from Tony Lindgren's
tree) have a conflict in linux-next with the arm-soc tree. The
conflict is in the file arch/arm/mach-omap2/clock44xx_data.c which is
deleted in the arm-soc tree. It is safe to delete the file too so
solve the conflict. Similar changes are done in the arm-soc tree in
the common clock framework migration. A missing hunk from the patch
in the IOMMU tree will be submitted as a seperate patch when the
merge-window is closed."
* tag 'iommu-updates-v3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (29 commits)
ARM: dma-mapping: support debug_dma_mapping_error
ARM: OMAP4: hwmod data: ipu and dsp to use parent clocks instead of leaf clocks
iommu/omap: Adapt to runtime pm
iommu/omap: Migrate to hwmod framework
iommu/omap: Keep mmu enabled when requested
iommu/omap: Remove redundant clock handling on ISR
iommu/amd: Remove obsolete comment
iommu/amd: Don't use 512GB pages
iommu/tegra: smmu: Move bus_set_iommu after probe for multi arch
iommu/tegra: gart: Move bus_set_iommu after probe for multi arch
iommu/tegra: smmu: Remove unnecessary PTC/TLB flush all
tile: dma_debug: add debug_dma_mapping_error support
sh: dma_debug: add debug_dma_mapping_error support
powerpc: dma_debug: add debug_dma_mapping_error support
mips: dma_debug: add debug_dma_mapping_error support
microblaze: dma-mapping: support debug_dma_mapping_error
ia64: dma_debug: add debug_dma_mapping_error support
c6x: dma_debug: add debug_dma_mapping_error support
ARM64: dma_debug: add debug_dma_mapping_error support
intel-iommu: Prevent devices with RMRRs from being placed into SI Domain
...
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'arm/tegra' and 'arm/omap' into next
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Add support for debug_dma_mapping_error() call to avoid warning from
debug_dma_unmap() interface when it checks for mapping error checked
status. Without this patch, device driver failed to check map error
warning is generated.
Signed-off-by: Shuah Khan <shuah.khan@hp.com>
Acked-by: Michal Simek <monstr@monstr.eu>
Signed-off-by: Joerg Roedel <joro@8bytes.org>
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Fix sparse warning by declaration do_notify_resume function
called from entry.S.
Warning:
arch/microblaze/kernel/signal.c:357:6: warning: symbol
'do_notify_resume' was not declared. Should it be static?
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
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Function declarations fix these sparse warnings:
arch/microblaze/lib/ashldi3.c:5:11: warning: symbol
'__ashldi3' was not declared. Should it be static?
arch/microblaze/lib/muldi3.c:50:8: warning: symbol
'__muldi3' was not declared. Should it be static?
arch/microblaze/lib/cmpdi2.c:5:11: warning: symbol
'__cmpdi2' was not declared. Should it be static?
arch/microblaze/lib/lshrdi3.c:5:11: warning: symbol
'__lshrdi3' was not declared. Should it be static?
arch/microblaze/lib/ashrdi3.c:5:11: warning: symbol
'__ashrdi3' was not declared. Should it be static?
arch/microblaze/lib/ucmpdi2.c:5:11: warning: symbol
'__ucmpdi2' was not declared. Should it be static?
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
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Remove these gcc types and use standard types.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
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Adding static to internal variables and functions.
Sparse warnings:
arch/microblaze/kernel/prom.c:55:6: warning:
symbol 'stdout' was not declared. Should it be static?
arch/microblaze/kernel/prom.c:57:12: warning:
symbol 'early_init_dt_scan_chosen_serial' was not declared. Should it be static?
CC arch/microblaze/kernel/prom.o
arch/microblaze/kernel/intc.c:102:5: warning:
symbol 'xintc_map' was not declared. Should it be static?
CC arch/microblaze/kernel/intc.o
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
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Wire-up kcmp syscall.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
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Intc_enable_or_unmask() is called at the last stage of handle_level_irq().
This function enables the irq first (Write INTC.SIE) and clear ISR next (Write INTC.IAR).
This would create problems that processor will get into a new interrupt as soon as SIE
is written because the previous level interrupt has been captured by INTC.
If the description bring some puzzles, here is the details of how interrupt is handled
for MicroBlaze after Interrupt signal is detected:
1. disable INTC (INTC.CIE = 1)
2. Acknowledge INTC (INTC.IAR = 1)
3. gets into interrupt source's handler, for example, timer's handler
4. Timer is interrupt handler acknowledge Timer Interrupt Status (Timer.TCSR0[23] = 1), and return
5. Enable INTC (INTC.SIE = 1)
6. Acknowledge INTC (INTC.IAR = 1)
INTC continue to capture source inputs even if INTC is disabled (INTC.IER == 1).
So between the gap of step 2 and step 3, the level interrupt from source makes INTC captures
a new interrupt and thus the INTC.ISR = 1 during step 3, 4, and 5.
When INTC is enabled in step 5, INTC's interrupt output will go high immediately.
In summary, the driver should issue step 6 before step 5.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
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Fix ELF_PLAT_INIT macro which initialized r1 twice which
ends in compilation warning.
Warning log:
fs/binfmt_elf.c: In function 'load_elf_binary':
fs/binfmt_elf.c:981:2: warning: operation on 'regs->r1' may be undefined [-Wsequence-point]
CC fs/dcookies.o
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
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Signed-off-by: Michal Simek <monstr@monstr.eu>
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Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Michael Kerrisk <mtk.manpages@gmail.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Dave Jones <davej@redhat.com>
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__pu_val must be volatile to ensure that the value is not lost.
It was causing the problem with timerfd syscall
where using inline asm at the end of function call doesn't
save u64 bit value to the stack.
In comparison both cases you can find out this fragment
where you can see the first part which is saved u64
value to stack and then using it in __put_user_asm_8 macro.
Origin broken implementation misses the first two swi instructions.
swi r22, r1, 28 /* missing without volatile */
swi r23, r1, 32
...
addik r4, r1, 28
lwi r3, r4, 0
swi r3, r25, 0
lwi r3, r4, 4
swi r3, r25, 4
addk r3, r0, r0
NOTE: Moving __put_val initialization after declaration
has not impact on this bug. It is just coding style issue.
Signed-off-by: Michal Simek <monstr@monstr.eu>
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Not necessary to use BIP for protection.
Signed-off-by: Michal Simek <monstr@monstr.eu>
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal
Pull big execve/kernel_thread/fork unification series from Al Viro:
"All architectures are converted to new model. Quite a bit of that
stuff is actually shared with architecture trees; in such cases it's
literally shared branch pulled by both, not a cherry-pick.
A lot of ugliness and black magic is gone (-3KLoC total in this one):
- kernel_thread()/kernel_execve()/sys_execve() redesign.
We don't do syscalls from kernel anymore for either kernel_thread()
or kernel_execve():
kernel_thread() is essentially clone(2) with callback run before we
return to userland, the callbacks either never return or do
successful do_execve() before returning.
kernel_execve() is a wrapper for do_execve() - it doesn't need to
do transition to user mode anymore.
As a result kernel_thread() and kernel_execve() are
arch-independent now - they live in kernel/fork.c and fs/exec.c
resp. sys_execve() is also in fs/exec.c and it's completely
architecture-independent.
- daemonize() is gone, along with its parts in fs/*.c
- struct pt_regs * is no longer passed to do_fork/copy_process/
copy_thread/do_execve/search_binary_handler/->load_binary/do_coredump.
- sys_fork()/sys_vfork()/sys_clone() unified; some architectures
still need wrappers (ones with callee-saved registers not saved in
pt_regs on syscall entry), but the main part of those suckers is in
kernel/fork.c now."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal: (113 commits)
do_coredump(): get rid of pt_regs argument
print_fatal_signal(): get rid of pt_regs argument
ptrace_signal(): get rid of unused arguments
get rid of ptrace_signal_deliver() arguments
new helper: signal_pt_regs()
unify default ptrace_signal_deliver
flagday: kill pt_regs argument of do_fork()
death to idle_regs()
don't pass regs to copy_process()
flagday: don't pass regs to copy_thread()
bfin: switch to generic vfork, get rid of pointless wrappers
xtensa: switch to generic clone()
openrisc: switch to use of generic fork and clone
unicore32: switch to generic clone(2)
score: switch to generic fork/vfork/clone
c6x: sanitize copy_thread(), get rid of clone(2) wrapper, switch to generic clone()
take sys_fork/sys_vfork/sys_clone prototypes to linux/syscalls.h
mn10300: switch to generic fork/vfork/clone
h8300: switch to generic fork/vfork/clone
tile: switch to generic clone()
...
Conflicts:
arch/microblaze/include/asm/Kbuild
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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now it can be done...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
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'arch-h8300', 'arch-m32r', 'arch-mn10300', 'arch-score', 'arch-sh' and 'arch-powerpc' into for-next
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