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commit 91ad11d7cc6f4472ebf177a6252fbf0fd100d798 upstream.
On MIPS calls to _mcount in modules generate 2 instructions to load
the _mcount address (and therefore 2 relocations). The mcount_loc
table should only reference the first of these, so the second is
filtered out by checking the relocation offset and ignoring ones that
immediately follow the previous one seen.
However if a module has an _mcount call at offset 0, the second
relocation would not be filtered out due to old_r_offset == 0
being taken to mean that the current relocation is the first one
seen, and both would end up in the mcount_loc table.
This results in ftrace_make_nop() patching both (adjacent)
instructions to branches over the _mcount call sequence like so:
0xffffffffc08a8000: 04 00 00 10 b 0xffffffffc08a8014
0xffffffffc08a8004: 04 00 00 10 b 0xffffffffc08a8018
0xffffffffc08a8008: 2d 08 e0 03 move at,ra
...
The second branch is in the delay slot of the first, which is
defined to be unpredictable - on the platform on which this bug was
encountered, it triggers a reserved instruction exception.
Fix by initializing old_r_offset to ~0 and using that instead of 0
to determine whether the current relocation is the first seen.
Signed-off-by: Alex Smith <alex.smith@imgtec.com>
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/7098/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 6b4a144a92ab81a1f45fb9b12aebaaaee0d08120 upstream.
In cross-build environment, we expect to use the cross-compiler objcopy
instead of the host objcopy.
It fixes following build failures:
objcopy --only-keep-debug lib/modules/3.14/kernel/net/ipv6/xfrm6_mode_tunnel.ko /srv/build/linux/debian/dbgtmp/usr/lib/debug/lib/modules/3.14/kernel/net/ipv6/xfrm6_mode_tunnel.ko
objcopy: Unable to recognise the format of the input file `lib/modules/3.14/kernel/net/ipv6/xfrm6_mode_tunnel.ko'
Signed-off-by: Fathi Boudra <fathi.boudra@linaro.org>
Fixes: 810e843746b7 ('deb-pkg: split debug symbols in their own package')
Reviewed-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Michal Marek <mmarek@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Revert the recently applied 0f55159d091c ("kallsyms: fix absolute
addresses for kASLR"). Kees said
: This got NAKed, please don't apply -- this patch works for x86 and
: ARM, but may cause problems for others:
:
: https://lkml.org/lkml/2014/2/24/718
It appears that Kees will be fixing all this up for 3.15.
Cc: Andy Honig <ahonig@google.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Michal Marek <mmarek@suse.cz>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Pull ARM fixes from Russell King:
"A number of ARM updates for -rc, covering mostly ARM specific code,
but with one change to modpost.c to allow Thumb section mismatches to
be detected.
ARM changes include reporting when an attempt is made to boot a LPAE
kernel on hardware which does not support LPAE, rather than just being
silent about it.
A number of other minor fixes are included too"
* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
ARM: 7992/1: boot: compressed: ignore bswapsdi2.S
ARM: 7991/1: sa1100: fix compile problem on Collie
ARM: fix noMMU kallsyms symbol filtering
ARM: 7980/1: kernel: improve error message when LPAE config doesn't match CPU
ARM: 7964/1: Detect section mismatches in thumb relocations
ARM: 7963/1: mm: report both sections from PMD
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Currently symbols that are absolute addresses are incorrectly displayed
in /proc/kallsyms if the kernel is loaded with kASLR.
The problem was that the scripts/kallsyms.c file which generates the
array of symbol names and addresses uses an relocatable value for all
symbols, even absolute symbols. This patch fixes that.
Several kallsyms output in different boot states for comparison:
$ egrep '_(stext|_per_cpu_(start|end))' /root/kallsyms.nokaslr
0000000000000000 D __per_cpu_start
0000000000014280 D __per_cpu_end
ffffffff810001c8 T _stext
$ egrep '_(stext|_per_cpu_(start|end))' /root/kallsyms.kaslr1
000000001f200000 D __per_cpu_start
000000001f214280 D __per_cpu_end
ffffffffa02001c8 T _stext
$ egrep '_(stext|_per_cpu_(start|end))' /root/kallsyms.kaslr2
000000000d400000 D __per_cpu_start
000000000d414280 D __per_cpu_end
ffffffff8e4001c8 T _stext
$ egrep '_(stext|_per_cpu_(start|end))' /root/kallsyms.kaslr-fixed
0000000000000000 D __per_cpu_start
0000000000014280 D __per_cpu_end
ffffffffadc001c8 T _stext
Signed-off-by: Andy Honig <ahonig@google.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Cc: Michal Marek <mmarek@suse.cz>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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LZ4 as implemented in the kernel differs from the default method now
used by the reference implementation of LZ4. Until the in-kernel method
is updated to support the new default, passing the legacy flag (-l) to
the compressor is necessary. Without this flag the kernel-generated,
LZ4-compressed initramfs is junk.
Kyungsik said:
: It seems that lz4 supports legacy format with the same option as lz4c
: does. Just looking at the first few bytes of lz4 compressed image, we can
: see whether it is new format or not.
:
: It shows new format magic number without this patch. New format magic
: number is 0x184d2204.
:
: $ hexdump -C ./initramfs_data.cpio.lz4 |more
: 00000000 04 22 4d 18 64 70 b9 69 (Little Endian)
: ...
:
: Currently kernel supports legacy format only.
Signed-off-by: Daniel M. Weeks <dan@danweeks.net>
Cc: Michal Marek <mmarek@suse.cz>
Acked-by: Kyungsik Lee <kyungsik.lee@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The testcase data is usable by any platform. This patch moves it into
the drivers/of directory so it can be included by any architecture.
Using the test cases requires manually adding #include <testcases.dtsi>
to the end of the boards .dtsi file and enabling CONFIG_OF_SELFTEST. Not
pretty though. A useful project would be to make the testcase code
easier to execute.
Signed-off-by: Grant Likely <grant.likely@linaro.org>
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Add processing for normally encountered thumb relocation types so that
section mismatches will be detected.
Comment from Rusty Russell follows:
Happiest for this to go through an ARM tree, so:
Signed-off-by: David A. Long <dave.long@linaro.org>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here is a bunch of USB fixes for 3.14-rc3. Most of these are xhci
reverts, fixing a bunch of reported issues with USB 3 host controller
issues that loads of people have been hitting (with the exception of
kernel developers, all of our machines seem to be working fine, which
is why these took so long to get resolved...)
There are some other minor fixes and new device ids, as ususal. All
have been in linux-next successfully"
* tag 'usb-3.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (22 commits)
usb: option: blacklist ZTE MF667 net interface
Revert "usb: xhci: Link TRB must not occur within a USB payload burst"
Revert "xhci: Avoid infinite loop when sg urb requires too many trbs"
Revert "xhci: Set scatter-gather limit to avoid failed block writes."
xhci 1.0: Limit arbitrarily-aligned scatter gather.
Modpost: fixed USB alias generation for ranges including 0x9 and 0xA
usb: core: Fix potential memory leak adding dyn USBdevice IDs
USB: ftdi_sio: add Tagsys RFID Reader IDs
usb: qcserial: add Netgear Aircard 340U
usb-storage: enable multi-LUN scanning when needed
USB: simple: add Dynastream ANT USB-m Stick device support
usb-storage: add unusual-devs entry for BlackBerry 9000
usb-storage: restrict bcdDevice range for Super Top in Cypress ATACB
usb: phy: move some error messages to debug
usb: ftdi_sio: add Mindstorms EV3 console adapter
usb: dwc2: fix memory corruption in dwc2 driver
usb: dwc2: fix role switch breakage
usb: dwc2: bail out early when booting with "nousb"
Revert "xhci: replace xhci_read_64() with readq()"
Revert "xhci: replace xhci_write_64() with writeq()"
...
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Since git v1.7.7, the .git directory can be a file when, for example,
the kernel is a submodule of another git super project. So, the check
"-d .git" is not working anymore in this case. Using a more generic
check like "-e .git" corrects this behaviour.
Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
Cc: Andy Whitcroft <apw@canonical.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Since git v1.7.7, the .git directory can be a file when, for example,
the kernel is a submodule of another git super project. So, the check
"-d .git" is not working anymore in this case. Using a more generic
check like "-e .git" corrects this behaviour.
Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
Cc: Andy Whitcroft <apw@canonical.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Commit afe2dab4f6 ("USB: add hex/bcd detection to usb modalias generation")
changed the routine that generates alias ranges. Before that change, only
digits 0-9 were supported; the commit tried to fix the case when the range
includes higher values than 0x9.
Unfortunately, the commit didn't fix the case when the range includes both
0x9 and 0xA, meaning that the final range must look like [x-9A-y] where
x <= 0x9 and y >= 0xA -- instead the [x-9A-x] range was produced.
Modprobe doesn't complain as it sees no difference between no-match and
bad-pattern results of fnmatch().
Fixing this simple bug to fix the aliases.
Also changing the hardcoded beginning of the range to uppercase as all the
other letters are also uppercase in the device version numbers.
Fortunately, this affects only the dvb-usb-dib0700 module, AFAIK.
Signed-off-by: Jan Moskyto Matejka <mq@suse.cz>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
Pull misc kbuild changes from Michal Marek:
"The non-critical part of kbuild is small this time:
- Three fixes for make deb-pkg
- A new coccinelle check
One of the deb-pkg fixes is a leftover from the last merge window,
hence the merge commit"
* 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
deb-pkg: Fix building for MIPS big-endian or ARM OABI
deb-pkg: Fix cross-building linux-headers package
scripts: Coccinelle script for pm_runtime_* return checks with IS_ERR_VALUE
deb-pkg: Inhibit initramfs builders if CONFIG_BLK_DEV_INITRD is not set
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git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
Pull kbuild changes from Michal Marek:
- fix make -s detection with make-4.0
- fix for scripts/setlocalversion when the kernel repository is a
submodule
- do not hardcode ';' in macros that expand to assembler code, as some
architectures' assemblers use a different character for newline
- Fix passing --gdwarf-2 to the assembler
* 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
frv: Remove redundant debugging info flag
mn10300: Remove redundant debugging info flag
kbuild: Fix debugging info generation for .S files
arch: use ASM_NL instead of ';' for assembler new line character in the macro
kbuild: Fix silent builds with make-4
Fix detectition of kernel git repository in setlocalversion script [take #2]
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Merge misc updates from Andrew Morton:
- a few hotfixes
- dynamic-debug updates
- ipc updates
- various other sweepings off the factory floor
* akpm: (31 commits)
firmware/google: drop 'select EFI' to avoid recursive dependency
compat: fix sys_fanotify_mark
checkpatch.pl: check for function declarations without arguments
mm/migrate.c: fix setting of cpupid on page migration twice against normal page
softirq: use const char * const for softirq_to_name, whitespace neatening
softirq: convert printks to pr_<level>
softirq: use ffs() in __do_softirq()
kernel/kexec.c: use vscnprintf() instead of vsnprintf() in vmcoreinfo_append_str()
splice: fix unexpected size truncation
ipc: fix compat msgrcv with negative msgtyp
ipc,msg: document barriers
ipc: delete seq_max field in struct ipc_ids
ipc: simplify sysvipc_proc_open() return
ipc: remove useless return statement
ipc: remove braces for single statements
ipc: standardize code comments
ipc: whitespace cleanup
ipc: change kern_ipc_perm.deleted type to bool
ipc: introduce ipc_valid_object() helper to sort out IPC_RMID races
ipc/sem.c: avoid overflow of semop undo (semadj) value
...
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git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Pull powerpc updates from Ben Herrenschmidt:
"So here's my next branch for powerpc. A bit late as I was on vacation
last week. It's mostly the same stuff that was in next already, I
just added two patches today which are the wiring up of lockref for
powerpc, which for some reason fell through the cracks last time and
is trivial.
The highlights are, in addition to a bunch of bug fixes:
- Reworked Machine Check handling on kernels running without a
hypervisor (or acting as a hypervisor). Provides hooks to handle
some errors in real mode such as TLB errors, handle SLB errors,
etc...
- Support for retrieving memory error information from the service
processor on IBM servers running without a hypervisor and routing
them to the memory poison infrastructure.
- _PAGE_NUMA support on server processors
- 32-bit BookE relocatable kernel support
- FSL e6500 hardware tablewalk support
- A bunch of new/revived board support
- FSL e6500 deeper idle states and altivec powerdown support
You'll notice a generic mm change here, it has been acked by the
relevant authorities and is a pre-req for our _PAGE_NUMA support"
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (121 commits)
powerpc: Implement arch_spin_is_locked() using arch_spin_value_unlocked()
powerpc: Add support for the optimised lockref implementation
powerpc/powernv: Call OPAL sync before kexec'ing
powerpc/eeh: Escalate error on non-existing PE
powerpc/eeh: Handle multiple EEH errors
powerpc: Fix transactional FP/VMX/VSX unavailable handlers
powerpc: Don't corrupt transactional state when using FP/VMX in kernel
powerpc: Reclaim two unused thread_info flag bits
powerpc: Fix races with irq_work
Move precessing of MCE queued event out from syscall exit path.
pseries/cpuidle: Remove redundant call to ppc64_runlatch_off() in cpu idle routines
powerpc: Make add_system_ram_resources() __init
powerpc: add SATA_MV to ppc64_defconfig
powerpc/powernv: Increase candidate fw image size
powerpc: Add debug checks to catch invalid cpu-to-node mappings
powerpc: Fix the setup of CPU-to-Node mappings during CPU online
powerpc/iommu: Don't detach device without IOMMU group
powerpc/eeh: Hotplug improvement
powerpc/eeh: Call opal_pci_reinit() on powernv for restoring config space
powerpc/eeh: Add restore_config operation
...
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Functions like this one are evil:
void foo()
{
...
}
Because these functions allow variadic arguments without
checking the arguments at all.
Original patch by Richard Weinberger.
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Borislav Petkov <bp@alien8.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI and power management updates from Rafael Wysocki:
"As far as the number of commits goes, the top spot belongs to ACPI
this time with cpufreq in the second position and a handful of PM
core, PNP and cpuidle updates. They are fixes and cleanups mostly, as
usual, with a couple of new features in the mix.
The most visible change is probably that we will create struct
acpi_device objects (visible in sysfs) for all devices represented in
the ACPI tables regardless of their status and there will be a new
sysfs attribute under those objects allowing user space to check that
status via _STA.
Consequently, ACPI device eject or generally hot-removal will not
delete those objects, unless the table containing the corresponding
namespace nodes is unloaded, which is extremely rare. Also ACPI
container hotplug will be handled quite a bit differently and cpufreq
will support CPU boost ("turbo") generically and not only in the
acpi-cpufreq driver.
Specifics:
- ACPI core changes to make it create a struct acpi_device object for
every device represented in the ACPI tables during all namespace
scans regardless of the current status of that device. In
accordance with this, ACPI hotplug operations will not delete those
objects, unless the underlying ACPI tables go away.
- On top of the above, new sysfs attribute for ACPI device objects
allowing user space to check device status by triggering the
execution of _STA for its ACPI object. From Srinivas Pandruvada.
- ACPI core hotplug changes reducing code duplication, integrating
the PCI root hotplug with the core and reworking container hotplug.
- ACPI core simplifications making it use ACPI_COMPANION() in the
code "glueing" ACPI device objects to "physical" devices.
- ACPICA update to upstream version 20131218. This adds support for
the DBG2 and PCCT tables to ACPICA, fixes some bugs and improves
debug facilities. From Bob Moore, Lv Zheng and Betty Dall.
- Init code change to carry out the early ACPI initialization
earlier. That should allow us to use ACPI during the timekeeping
initialization and possibly to simplify the EFI initialization too.
From Chun-Yi Lee.
- Clenups of the inclusions of ACPI headers in many places all over
from Lv Zheng and Rashika Kheria (work in progress).
- New helper for ACPI _DSM execution and rework of the code in
drivers that uses _DSM to execute it via the new helper. From
Jiang Liu.
- New Win8 OSI blacklist entries from Takashi Iwai.
- Assorted ACPI fixes and cleanups from Al Stone, Emil Goode, Hanjun
Guo, Lan Tianyu, Masanari Iida, Oliver Neukum, Prarit Bhargava,
Rashika Kheria, Tang Chen, Zhang Rui.
- intel_pstate driver updates, including proper Baytrail support,
from Dirk Brandewie and intel_pstate documentation from Ramkumar
Ramachandra.
- Generic CPU boost ("turbo") support for cpufreq from Lukasz
Majewski.
- powernow-k6 cpufreq driver fixes from Mikulas Patocka.
- cpufreq core fixes and cleanups from Viresh Kumar, Jane Li, Mark
Brown.
- Assorted cpufreq drivers fixes and cleanups from Anson Huang, John
Tobias, Paul Bolle, Paul Walmsley, Sachin Kamat, Shawn Guo, Viresh
Kumar.
- cpuidle cleanups from Bartlomiej Zolnierkiewicz.
- Support for hibernation APM events from Bin Shi.
- Hibernation fix to avoid bringing up nonboot CPUs with ACPI EC
disabled during thaw transitions from Bjørn Mork.
- PM core fixes and cleanups from Ben Dooks, Leonardo Potenza, Ulf
Hansson.
- PNP subsystem fixes and cleanups from Dmitry Torokhov, Levente
Kurusa, Rashika Kheria.
- New tool for profiling system suspend from Todd E Brandt and a
cpupower tool cleanup from One Thousand Gnomes"
* tag 'pm+acpi-3.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (153 commits)
thermal: exynos: boost: Automatic enable/disable of BOOST feature (at Exynos4412)
cpufreq: exynos4x12: Change L0 driver data to CPUFREQ_BOOST_FREQ
Documentation: cpufreq / boost: Update BOOST documentation
cpufreq: exynos: Extend Exynos cpufreq driver to support boost
cpufreq / boost: Kconfig: Support for software-managed BOOST
acpi-cpufreq: Adjust the code to use the common boost attribute
cpufreq: Add boost frequency support in core
intel_pstate: Add trace point to report internal state.
cpufreq: introduce cpufreq_generic_get() routine
ARM: SA1100: Create dummy clk_get_rate() to avoid build failures
cpufreq: stats: create sysfs entries when cpufreq_stats is a module
cpufreq: stats: free table and remove sysfs entry in a single routine
cpufreq: stats: remove hotplug notifiers
cpufreq: stats: handle cpufreq_unregister_driver() and suspend/resume properly
cpufreq: speedstep: remove unused speedstep_get_state
platform: introduce OF style 'modalias' support for platform bus
PM / tools: new tool for suspend/resume performance optimization
ACPI: fix module autoloading for ACPI enumerated devices
ACPI: add module autoloading support for ACPI enumerated devices
ACPI: fix create_modalias() return value handling
...
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ether_addr_copy was added for kernel version 3.14. It's slightly
smaller/faster for some arches. Encourage its use.
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Andy Whitcroft <apw@canonical.com>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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This adds a simple check that any compatible strings in DeviceTree dts
files are present in Documentation/devicetree/bindings. Vendor prefixes
are also checked for existing in vendor-prefixes.txt These should be
temporary checks until we have more sophisticated binding schema
checking.
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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This change restricts the check for the for the FSF address in the GPL
copyright statement so that it only flags the address, not the
references to the gnu.org/licenses URL which appears to be used in
numerous drivers. The idea is to still allow some reference to an
external copy of the GPL in the event that files are copied out of the
kernel tree without the COPYING file.
So for example this statement will still return an error:
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
However, this statement will not return an error after this patch:
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Kernel style uses function pointers in this form:
"type (*funcptr)(args...)"
Emit warnings when this function pointer form isn't used.
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Andy Whitcroft <apw@shadowen.org>
Cc: Derek Perrin <d.roc16@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The FSF address check is a bit too verbose looking for the GPL text.
Quiet it a bit by requiring --strict for the GPL bit.
Also make the address tests match a few uses of abbreviations for street
names and make it case insensitive.
Signed-off-by: Joe Perches <joe@perches.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Cc: Manfred Spraul <manfred@colorfullife.com>
Cc: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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If statements don't need multiple parentheses around tested comparisons
like "if ((foo == bar))".
An == comparison maybe a sign of an intended assignment, so emit a
slightly different message if so.
Signed-off-by: Joe Perches <joe@perches.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Cc: Manfred Spraul <manfred@colorfullife.com>
Cc: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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This test should remove all the spaces before a tab not just one space.
Substitute a tab for each 8 space block before a tab and remove less than
8 spaces before a tab.
This SPACE_BEFORE_TAB test is done after CODE_INDENT.
If there are spaces used at the beginning of a line that should be
converted to tabs, please make sure that the CODE_INDENT test and
conversion is done before this SPACE_BEFORE_TAB test and conversion.
Reported-by: Manfred Spraul <manfred@colorfullife.com>
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Add the ability to fix and overwrite existing files/patches instead of
creating a new file "<filename>.EXPERIMENTAL-checkpatch-fixes".
Suggested-by: Manfred Spraul <manfred@colorfullife.com>
Signed-off-by: Joe Perches <joe@perches.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Cc: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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switch case statements missing a break statement are an unfortunately
common error.
e.g.:
commit 4a2c94c9b6c0 ("HID: kye: Add report fixup for Genius Manticore Keyboard")
case blocks should end in a break/return/goto/continue.
If a fall-through is used, it should have a comment showing that it is
intentional. Ideally that comment should be something like:
"/* fall-through */"
Add a test to look for missing break statements.
This looks only at the context lines before an inserted case so it's
possible to have false positives when the context contains a close brace
and the break is before the brace and not part of the patch context.
Looking at recent patches, this is a pretty rare occurrence. The normal
kernel style uses a break as the last line of the previous block.
Signed-off-by: Joe Perches <joe@perche.com>
Cc: Andy Whitcroft <apw@shadowen.org>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Cc: Dave Jones <davej@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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gfp.h and page_alloc.c already specify that __GFP_NOFAIL is deprecated and
no new users should be added.
Add a warning to checkpatch to catch this.
Signed-off-by: David Rientjes <rientjes@google.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The "space before a non-naked semicolon" test has unwanted output when
used in "for ( ;; )" loops.
Make the test work only on end-of-line statement termination semicolons.
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The current checkpatch test for split strings does not find several
cases that should be found.
For instance:
/* Else poor success; go back to mode in "active" table */
} else {
IWL_DEBUG_RATE(mvm,
- "LQ: GOING BACK TO THE OLD TABLE suc=%d cur-tpt=%d old-tpt=%d\n",
+ "GOING BACK TO THE OLD TABLE: SR %d "
+ "cur-tpt %d old-tpt %d\n",
window->success_ratio,
window->average_tpt,
lq_sta->last_tpt);
does not currently emit a warning.
Improve the test to find these cases.
Add more exceptions to reduce false positives for assembly and octal/hex
string constants.
Signed-off-by: Joe Perches <joe@perches.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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get_maintainer currently uses "Signed-off-by" style lines to find
interested parties to send patches to when the MAINTAINERS file does not
have a specific section entry with a matching file pattern.
Add statistics for commit authors and lines added and deleted to the
information provided by --rolestats.
These statistics are also emitted whenever --rolestats and --git are
selected even when there is a specified maintainer.
This can have the effect of expanding the number of people that are shown
as possible "maintainers" of a particular file because "authors",
"added_lines", and "removed_lines" are also used as criterion for the
--max-maintainers option separate from the "commit_signers".
The first "--git-max-maintainers" values of each criterion
are emitted. Any "ties" are not shown.
For example: (forcedeth does not have a named maintainer)
Old output:
$ ./scripts/get_maintainer.pl -f drivers/net/ethernet/nvidia/forcedeth.c
"David S. Miller" <davem@davemloft.net> (commit_signer:8/10=80%)
Jiri Pirko <jiri@resnulli.us> (commit_signer:2/10=20%)
Patrick McHardy <kaber@trash.net> (commit_signer:2/10=20%)
Larry Finger <Larry.Finger@lwfinger.net> (commit_signer:1/10=10%)
Peter Zijlstra <peterz@infradead.org> (commit_signer:1/10=10%)
netdev@vger.kernel.org (open list:NETWORKING DRIVERS)
linux-kernel@vger.kernel.org (open list)
New output:
$ ./scripts/get_maintainer.pl -f drivers/net/ethernet/nvidia/forcedeth.c
"David S. Miller" <davem@davemloft.net> (commit_signer:8/10=80%)
Jiri Pirko <jiri@resnulli.us> (commit_signer:2/10=20%,authored:2/10=20%,removed_lines:3/33=9%)
Patrick McHardy <kaber@trash.net> (commit_signer:2/10=20%,authored:2/10=20%,added_lines:12/95=13%,removed_lines:10/33=30%)
Larry Finger <Larry.Finger@lwfinger.net> (commit_signer:1/10=10%,authored:1/10=10%,added_lines:35/95=37%)
Peter Zijlstra <peterz@infradead.org> (commit_signer:1/10=10%)
"Peter Hüwe" <PeterHuewe@gmx.de> (authored:1/10=10%,removed_lines:15/33=45%)
Joe Perches <joe@perches.com> (authored:1/10=10%)
Neil Horman <nhorman@tuxdriver.com> (added_lines:40/95=42%)
Bill Pemberton <wfp5p@virginia.edu> (removed_lines:3/33=9%)
netdev@vger.kernel.org (open list:NETWORKING DRIVERS)
linux-kernel@vger.kernel.org (open list)
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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"make headers_check" warns about soundcard.h for (at least) five years
now:
[...]/usr/include/linux/soundcard.h:1054: userspace cannot reference function or variable defined in the kernel
We're apparently stuck with providing OSSlib-3.8 compatibility, so let's
special case this declaration just to silence it.
Notes:
0) Support for OSSlib post 3.8 was already removed in commit 43a990765a
("sound: Remove OSSlib stuff from linux/soundcard.h"). Five years have
passed since that commit: do people still care about OSSlib-3.8? If
not, quite a bit of code could be remove from soundcard.h (and probably
ultrasound.h).
2) By the way, what is actually meant by:
It is no longer possible to actually link against OSSlib with this
header, but we still provide these macros for programs using them.
Doesn't that mean compatibility to OSSlib isn't even useful?
3) Anyhow, a previous discussion soundcard.h, which led to that commit,
starts at https://lkml.org/lkml/2009/1/20/349 .
4) And, yes, I sneaked in a whitespace fix.
Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Cc: Takashi Iwai <tiwai@suse.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Cc: Michal Marek <mmarek@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Sort the exception table at build-time rather than during boot.
Microblaze is the same case as AARCH64 that's why EM_MICROBLAZE
conditional check was added to allow cross-compilation on machines which
are not running the latest libc-dev.
Inspired by AARCH64 commit adace89562c7 ("arm64: extable: sort the
exception table at build time").
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: David Daney <david.daney@cavium.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI updates from Bjorn Helgaas:
"PCI changes for the v3.14 merge window:
Resource management
- Change pci_bus_region addresses to dma_addr_t (Bjorn Helgaas)
- Support 64-bit AGP BARs (Bjorn Helgaas, Yinghai Lu)
- Add pci_bus_address() to get bus address of a BAR (Bjorn Helgaas)
- Use pci_resource_start() for CPU address of AGP BARs (Bjorn Helgaas)
- Enforce bus address limits in resource allocation (Yinghai Lu)
- Allocate 64-bit BARs above 4G when possible (Yinghai Lu)
- Convert pcibios_resource_to_bus() to take pci_bus, not pci_dev (Yinghai Lu)
PCI device hotplug
- Major rescan/remove locking update (Rafael J. Wysocki)
- Make ioapic builtin only (not modular) (Yinghai Lu)
- Fix release/free issues (Yinghai Lu)
- Clean up pciehp (Bjorn Helgaas)
- Announce pciehp slot info during enumeration (Bjorn Helgaas)
MSI
- Add pci_msi_vec_count(), pci_msix_vec_count() (Alexander Gordeev)
- Add pci_enable_msi_range(), pci_enable_msix_range() (Alexander Gordeev)
- Deprecate "tri-state" interfaces: fail/success/fail+info (Alexander Gordeev)
- Export MSI mode using attributes, not kobjects (Greg Kroah-Hartman)
- Drop "irq" param from *_restore_msi_irqs() (DuanZhenzhong)
SR-IOV
- Clear NumVFs when disabling SR-IOV in sriov_init() (ethan.zhao)
Virtualization
- Add support for save/restore of extended capabilities (Alex Williamson)
- Add Virtual Channel to save/restore support (Alex Williamson)
- Never treat a VF as a multifunction device (Alex Williamson)
- Add pci_try_reset_function(), et al (Alex Williamson)
AER
- Ignore non-PCIe error sources (Betty Dall)
- Support ACPI HEST error sources for domains other than 0 (Betty Dall)
- Consolidate HEST error source parsers (Bjorn Helgaas)
- Add a TLP header print helper (Borislav Petkov)
Freescale i.MX6
- Remove unnecessary code (Fabio Estevam)
- Make reset-gpio optional (Marek Vasut)
- Report "link up" only after link training completes (Marek Vasut)
- Start link in Gen1 before negotiating for Gen2 mode (Marek Vasut)
- Fix PCIe startup code (Richard Zhu)
Marvell MVEBU
- Remove duplicate of_clk_get_by_name() call (Andrew Lunn)
- Drop writes to bridge Secondary Status register (Jason Gunthorpe)
- Obey bridge PCI_COMMAND_MEM and PCI_COMMAND_IO bits (Jason Gunthorpe)
- Support a bridge with no IO port window (Jason Gunthorpe)
- Use max_t() instead of max(resource_size_t,) (Jingoo Han)
- Remove redundant of_match_ptr (Sachin Kamat)
- Call pci_ioremap_io() at startup instead of dynamically (Thomas Petazzoni)
NVIDIA Tegra
- Disable Gen2 for Tegra20 and Tegra30 (Eric Brower)
Renesas R-Car
- Add runtime PM support (Valentine Barshak)
- Fix rcar_pci_probe() return value check (Wei Yongjun)
Synopsys DesignWare
- Fix crash in dw_msi_teardown_irq() (Bjørn Erik Nilsen)
- Remove redundant call to pci_write_config_word() (Bjørn Erik Nilsen)
- Fix missing MSI IRQs (Harro Haan)
- Add dw_pcie prefix before cfg_read/write (Pratyush Anand)
- Fix I/O transfers by using CPU (not realio) address (Pratyush Anand)
- Whitespace cleanup (Jingoo Han)
EISA
- Call put_device() if device_register() fails (Levente Kurusa)
- Revert EISA initialization breakage ((Bjorn Helgaas)
Miscellaneous
- Remove unused code, including PCIe 3.0 interfaces (Stephen Hemminger)
- Prevent bus conflicts while checking for bridge apertures (Bjorn Helgaas)
- Stop clearing bridge Secondary Status when setting up I/O aperture (Bjorn Helgaas)
- Use dev_is_pci() to identify PCI devices (Yijing Wang)
- Deprecate DEFINE_PCI_DEVICE_TABLE (Joe Perches)
- Update documentation 00-INDEX (Erik Ekman)"
* tag 'pci-v3.14-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (119 commits)
Revert "EISA: Initialize device before its resources"
Revert "EISA: Log device resources in dmesg"
vfio-pci: Use pci "try" reset interface
PCI: Check parent kobject in pci_destroy_dev()
xen/pcifront: Use global PCI rescan-remove locking
powerpc/eeh: Use global PCI rescan-remove locking
PCI: Fix pci_check_and_unmask_intx() comment typos
PCI: Add pci_try_reset_function(), pci_try_reset_slot(), pci_try_reset_bus()
MPT / PCI: Use pci_stop_and_remove_bus_device_locked()
platform / x86: Use global PCI rescan-remove locking
PCI: hotplug: Use global PCI rescan-remove locking
pcmcia: Use global PCI rescan-remove locking
ACPI / hotplug / PCI: Use global PCI rescan-remove locking
ACPI / PCI: Use global PCI rescan-remove locking in PCI root hotplug
PCI: Add global pci_lock_rescan_remove()
PCI: Cleanup pci.h whitespace
PCI: Reorder so actual code comes before stubs
PCI/AER: Support ACPI HEST AER error sources for PCI domains other than 0
ACPICA: Add helper macros to extract bus/segment numbers from HEST table.
PCI: Make local functions static
...
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull ARM64 updates from Catalin Marinas:
- CPU suspend support on top of PSCI (firmware Power State Coordination
Interface)
- jump label support
- CMA can now be enabled on arm64
- HWCAP bits for crypto and CRC32 extensions
- optimised percpu using tpidr_el1 register
- code cleanup
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (42 commits)
arm64: fix typo in entry.S
arm64: kernel: restore HW breakpoint registers in cpu_suspend
jump_label: use defined macros instead of hard-coding for better readability
arm64, jump label: optimize jump label implementation
arm64, jump label: detect %c support for ARM64
arm64: introduce aarch64_insn_gen_{nop|branch_imm}() helper functions
arm64: move encode_insn_immediate() from module.c to insn.c
arm64: introduce interfaces to hotpatch kernel and module code
arm64: introduce basic aarch64 instruction decoding helpers
arm64: dts: Reduce size of virtio block device for foundation model
arm64: Remove unused __data_loc variable
arm64: Enable CMA
arm64: Warn on NULL device structure for dma APIs
arm64: Add hwcaps for crypto and CRC32 extensions.
arm64: drop redundant macros from read_cpuid()
arm64: Remove outdated comment
arm64: cmpxchg: update macros to prevent warnings
arm64: support single-step and breakpoint handler hooks
ARM64: fix framepointer check in unwind_frame
ARM64: check stack pointer in get_wchan
...
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git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-kconfig
Pull localmodconfig update from Steven Rostedt:
"While debugging the problem with localmodconfig and the ALSA codec
modules all being set, I discovered a small bug in the dependency
logic.
If a config has a dependency based on its setting value,
localmodcondig misses it.
For example:
config FOO
default y if BAR || ZOO
If FOO is needed for a module and is set to '=m', and so are BAR or
ZOO, localmodconfig will not see that BAR or ZOO are also needed for
the foo module, and will incorrectly disable them"
* tag 'localmodconfig-v3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-kconfig:
localmodconfig: Add config depends by default settings
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* acpi-tools:
ACPICA: acpidump: Update MAINTAINERS file to include tools folder for ACPI/ACPICA.
ACPICA: acpidump: Enable tools Makefile to include acpi tools.
ACPICA: acpidump: Cleanup tools/power/acpi makefiles.
* pm-tools:
PM / tools: new tool for suspend/resume performance optimization
cpupower: Fix sscanf robustness in cpufreq-set
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This tool is designed to assist kernel and OS developers in optimizing
their linux stack's suspend/resume time. Using a kernel image built with a
few extra options enabled, the tool will execute a suspend and will
capture dmesg and ftrace data until resume is complete. This data is
transformed into a device timeline and a callgraph to give a quick and
detailed view of which devices and callbacks are taking the most time in
suspend/resume. The output is a single html file which can be viewed in
firefox or chrome.
References: https://01.org/suspendresume
Signed-off-by: Todd Brandt <todd.e.brandt@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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GCC 4.8 now generates out-of-line vr save/restore functions when
optimizing for size. They are needed for the raid6 altivec support.
Signed-off-by: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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As commit a9468f30b5eac6 "ARM: 7333/2: jump label: detect %c
support for ARM", this patch detects the same thing for ARM64
because some ARM64 GCC versions have the same issue.
Some versions of ARM64 GCC which do support asm goto, do not
support the %c specifier. Since we need the %c to support jump
labels on ARM64, detect that too in the asm goto detection script
to avoid build errors with these versions.
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Jiang Liu <liuj97@gmail.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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These commands will mysteriously fail:
$ make ARCH=arm versatile_defconfig
[...]
$ make ARCH=arm deb-pkg
[...]
make[1]: *** [deb-pkg] Error 1
make: *** [deb-pkg] Error 2
The Debian architecture selection for these kernel architectures does
'grep FOO=y $KCONFIG_CONFIG && echo bar', and after 'set -e' this
aborts the script if grep does not find the given config symbol.
Fixes: 10f26fa64200 ('build, deb-pkg: select userland architecture based on UTS_MACHINE')
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Michal Marek <mmarek@suse.cz>
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builddeb generates a control file that says the linux-headers package
can only be built for the build system primary architecture. This
breaks cross-building configurations. We should use $debarch for this
instead.
Since $debarch is not yet set when generating the control file, set
Architecture: any and use control file variables to fill in the
description.
Fixes: cd8d60a20a45 ('kbuild: create linux-headers package in deb-pkg')
Reported-and-tested-by: "Niew, Sh." <shniew@gmail.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Michal Marek <mmarek@suse.cz>
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setlocalversion script was testing the presence of .git directory in
order to find out if git is used as SCM to track the current kernel
project. However in some cases, .git is not a directory but can be a
file: when the kernel is a git submodule part of a git super project for
example.
This patch just fixes this by using 'git rev-parse --show-cdup' to check
that the current directory is the kernel git topdir. This has the
advantage to not test and rely on git internal infrastructure directly.
Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
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As indicated by Sekhar in [1], there seems to be a tendency to use
IS_ERR_VALUE to check the error result for pm_runtime_* functions which
make no sense considering commit c48cd65 (ARM: OMAP: use consistent
error checking) - the error values can either be < 0 for error OR
0, 1 in cases where we have success.
So, setup a coccinelle script to help identify the same.
[1] http://marc.info/?t=138472678100003&r=1&w=2
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Reported-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Michal Marek <mmarek@suse.cz>
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|
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git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux
Pull virtio balloon driver fixes from Rusty Russell:
"Refactoring broke the balloon driver, and fixing kallsyms on ARM broke
some (non-ARM) MMUless setups, so we're making that fix ARM-only for
now.
Unfortunately, the ARM refactoring which broke kallsyms/perf was
CC:stable, so the fix (which broken non-ARM) was also CC:stable, so
now the partial reversion is also CC:stable..."
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux:
scripts/link-vmlinux.sh: only filter kernel symbols for arm
virtio_balloon: update_balloon_size(): update correct field
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Currently localmodconfig will miss dependencies from the default option.
For example:
config FOO
default y if BAR || ZOO
If FOO is needed for a module and is set to '=m', and so are BAR or ZOO,
localmodconfig will not see that BOO or ZOO are also needed for the foo
module, and will incorrectly disable them.
Link: http://lkml.kernel.org/r/20131218175137.162937350@goodmis.org
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc
Pull ARC fixes from Vineet Gupta:
"These are couple of weeks old already, but I just couldn't get them to
you earlier.
- couple of fixes for recently added perf code
- build time extable sort"
* tag 'arc-fixes-for-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
ARC: [perf] Fix a few thinkos
ARC: Add guard macro to uapi/asm/unistd.h
ARC: extable: Enable sorting at build time
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Prefer use of the direct definition of struct pci_device_id instead of
indirection via macro DEFINE_PCI_DEVICE_TABLE.
Update the PCI documentation to deprecate DEFINE_PCI_DEVICE_TABLE. Update
checkpatch adding --fix option.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Jingoo Han <jg1.han@samsung.com>
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Actually CONFIG_PAGE_OFFSET isn't same with PAGE_OFFSET, so
it isn't easy to figue out PAGE_OFFSET defined in header
file from scripts.
Because CONFIG_PAGE_OFFSET may not be defined in some ARCHs(
64bit ARCH), or defined as bogus value in !MMU case, so
this patch only applys the filter on ARM when CONFIG_PAGE_OFFSET
is defined as the original problem is only on ARM.
Cc: <stable@vger.kernel.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Fixes: f6537f2f0eba4eba3354e48dbe3047db6d8b6254
Singed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
|
