| Commit message (Collapse) | Author | Age |
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Make sure I2C adapters being registered have the required struct
fields set. If they don't, problems will happen later.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
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It's about time to make it clear that i2c_adapter.id is deprecated.
Hopefully this will remind the last user to move over to a different
strategy.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Jarod Wilson <jarod@redhat.com>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Acked-by: Hans Verkuil <hverkuil@xs4all.nl>
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Drivers don't need to include <linux/i2c-id.h>, especially not when
they don't use anything that header file provides.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Michael Hunold <michael@mihu.de>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Delete unused I2C adapter IDs. Special cases are:
* I2C_HW_B_RIVA was still set in driver rivafb, however no other
driver is ever looking for this value, so we can safely remove it.
* I2C_HW_B_HDPVR is used in staging driver lirc_zilog, however no
adapter ID is ever set to this value, so the code in question never
runs. As the code additionally expects that I2C_HW_B_HDPVR may not
be defined, we can delete it now and let the lirc_zilog driver
maintainer rewrite this piece of code.
Big thanks for Hans Verkuil for doing all the hard work :)
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Jarod Wilson <jarod@redhat.com>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Acked-by: Hans Verkuil <hverkuil@xs4all.nl>
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A few new i2c-drivers came into the kernel which clear the clientdata-pointer
on exit. This is obsolete meanwhile, so fix it and hope the word will spread.
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Alan Cox <alan@linux.intel.com>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
PCI: sysfs: fix printk warnings
PCI: fix pci_bus_alloc_resource() hang, prefer positive decode
PCI: read current power state at enable time
PCI: fix size checks for mmap() on /proc/bus/pci files
x86/PCI: coalesce overlapping host bridge windows
PCI hotplug: ibmphp: Add check to prevent reading beyond mapped area
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Cast pci_resource_start() and pci_resource_len() to u64 for printk.
drivers/pci/pci-sysfs.c:753: warning: format '%16Lx' expects type 'long long unsigned int', but argument 9 has type 'resource_size_t'
drivers/pci/pci-sysfs.c:753: warning: format '%16Lx' expects type 'long long unsigned int', but argument 10 has type 'resource_size_t'
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
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When a PCI bus has two resources with the same start/end, e.g.,
pci_bus 0000:04: resource 2 [mem 0xd0000000-0xd7ffffff pref]
pci_bus 0000:04: resource 7 [mem 0xd0000000-0xd7ffffff]
the previous pci_bus_find_resource_prev() implementation would alternate
between them forever:
pci_bus_find_resource_prev(... [mem 0xd0000000-0xd7ffffff pref])
returns [mem 0xd0000000-0xd7ffffff]
pci_bus_find_resource_prev(... [mem 0xd0000000-0xd7ffffff])
returns [mem 0xd0000000-0xd7ffffff pref]
pci_bus_find_resource_prev(... [mem 0xd0000000-0xd7ffffff pref])
returns [mem 0xd0000000-0xd7ffffff]
...
This happened because there was no ordering between two resources with the
same start and end. A resource that had the same start and end as the
cursor, but was not itself the cursor, was considered to be before the
cursor.
This patch fixes the hang by making a fixed ordering between any two
resources.
In addition, it tries to allocate from positively decoded regions before
using any subtractively decoded resources. This means we will use a
positive decode region before a subtractive decode one, even if it means
using a smaller address.
Reference: https://bugzilla.kernel.org/show_bug.cgi?id=22062
Reported-by: Borislav Petkov <bp@amd64.org>
Tested-by: Borislav Petkov <bp@amd64.org>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
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When we enable a PCI device, we avoid doing a lot of the initial setup
work if the device's enable count is non-zero. If we don't fetch the
power state though, we may later fail to set up MSI due to the unknown
status. So pick it up before we short circuit the rest due to a
pre-existing enable or mismatched enable/disable pair (as happens with
VGA devices, which are special in a special way).
Tested-by: Jesse Brandeburg <jesse.brandeburg@gmail.com>
Reported-by: Dave Airlie <airlied@linux.ie>
Tested-by: Dave Airlie <airlied@linux.ie>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
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The checks for valid mmaps of PCI resources made through /proc/bus/pci files
that were introduced in 9eff02e2042f96fb2aedd02e032eca1c5333d767 have several
problems:
1. mmap() calls on /proc/bus/pci files are made with real file offsets > 0,
whereas under /sys/bus/pci/devices, the start of the resource corresponds
to offset 0. This may lead to false negatives in pci_mmap_fits(), which
implicitly assumes the /sys/bus/pci/devices layout.
2. The loop in proc_bus_pci_mmap doesn't skip empty resouces. This leads
to false positives, because pci_mmap_fits() doesn't treat empty resources
correctly (the calculated size is 1 << (8*sizeof(resource_size_t)-PAGE_SHIFT)
in this case!).
3. If a user maps resources with BAR > 0, pci_mmap_fits will emit bogus
WARNINGS for the first resources that don't fit until the correct one is found.
On many controllers the first 2-4 BARs are used, and the others are empty.
In this case, an mmap attempt will first fail on the non-empty BARs
(including the "right" BAR because of 1.) and emit bogus WARNINGS because
of 3., and finally succeed on the first empty BAR because of 2.
This is certainly not the intended behaviour.
This patch addresses all 3 issues.
Updated with an enum type for the additional parameter for pci_mmap_fits().
Cc: stable@kernel.org
Signed-off-by: Martin Wilck <martin.wilck@ts.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
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Some BIOSes provide PCI host bridge windows that overlap, e.g.,
pci_root PNP0A03:00: host bridge window [mem 0xb0000000-0xffffffff]
pci_root PNP0A03:00: host bridge window [mem 0xafffffff-0xdfffffff]
pci_root PNP0A03:00: host bridge window [mem 0xf0000000-0xffffffff]
If we simply insert these as children of iomem_resource, the second window
fails because it conflicts with the first, and the third is inserted as a
child of the first, i.e.,
b0000000-ffffffff PCI Bus 0000:00
f0000000-ffffffff PCI Bus 0000:00
When we claim PCI device resources, this can cause collisions like this
if we put them in the first window:
pci 0000:00:01.0: address space collision: [mem 0xff300000-0xff4fffff] conflicts with PCI Bus 0000:00 [mem 0xf0000000-0xffffffff]
Host bridge windows are top-level resources by definition, so it doesn't
make sense to make the third window a child of the first. This patch
coalesces any host bridge windows that overlap. For the example above,
the result is this single window:
pci_root PNP0A03:00: host bridge window [mem 0xafffffff-0xffffffff]
This fixes a 2.6.34 regression.
Reference: https://bugzilla.kernel.org/show_bug.cgi?id=17011
Reported-and-tested-by: Anisse Astier <anisse@astier.eu>
Reported-and-tested-by: Pramod Dematagoda <pmd.lotr.gandalf@gmail.com>
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
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While testing various randconfigs with ktest.pl, I hit the following panic:
BUG: unable to handle kernel paging request at f7e54b03
IP: [<c0d63409>] ibmphp_access_ebda+0x101/0x19bb
Adding printks, I found that the loop that reads the ebda blocks
can move out of the mapped section.
ibmphp_access_ebda: start=f7e44c00 size=5120 end=f7e46000
ibmphp_access_ebda: io_mem=f7e44d80 offset=384
ibmphp_access_ebda: io_mem=f7e54b03 offset=65283
The start of the iomap was at f7e44c00 and had a size of 5120,
making the end f7e46000. We start with an offset of 0x180 or
384, giving the first read at 0xf7e44d80. Reading that location
yields 65283, which is much bigger than the 5120 that was allocated
and makes the next read at f7e54b03 which is outside the mapped area.
Perhaps this is a bug in the driver, or buggy hardware, but this patch
is more about not crashing my box on start up and just giving a warning
if it detects this error.
This patch at least lets my box boot with just a warning.
Cc: Chandru Siddalingappa <chandru@linux.vnet.ibm.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
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Move the logging bits from kernel.h into printk.h so that
there is a bit more logical separation of the generic from
the printk logging specific parts.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The fix in commit 6b4e81db2552 ("i8k: Tell gcc that *regs gets
clobbered") to work around the gcc miscompiling i8k.c to add "+m
(*regs)" caused register pressure problems and a build failure.
Changing the 'asm' statement to 'asm volatile' instead should prevent
that and works around the gcc bug as well, so we can remove the "+m".
[ Background on the gcc bug: a memory clobber fails to mark the function
the asm resides in as non-pure (aka "__attribute__((const))"), so if
the function does nothing else that triggers the non-pure logic, gcc
will think that that function has no side effects at all. As a result,
callers will be mis-compiled.
Adding the "+m" made gcc see that it's not a pure function, and so
does "asm volatile". The problem was never really the need to mark
"*regs" as changed, since the memory clobber did that part - the
problem was just a bug in the gcc "pure" function analysis - Linus ]
Signed-off-by: Jim Bos <jim876@xs4all.nl>
Acked-by: Jakub Jelinek <jakub@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes:
GFS2: Fix inode deallocation race
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This area of the code has always been a bit delicate due to the
subtleties of lock ordering. The problem is that for "normal"
alloc/dealloc, we always grab the inode locks first and the rgrp lock
later.
In order to ensure no races in looking up the unlinked, but still
allocated inodes, we need to hold the rgrp lock when we do the lookup,
which means that we can't take the inode glock.
The solution is to borrow the technique already used by NFS to solve
what is essentially the same problem (given an inode number, look up
the inode carefully, checking that it really is in the expected
state).
We cannot do that directly from the allocation code (lock ordering
again) so we give the job to the pre-existing delete workqueue and
carry on with the allocation as normal.
If we find there is no space, we do a journal flush (required anyway
if space from a deallocation is to be released) which should block
against the pending deallocations, so we should always get the space
back.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung
* 's5p-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
ARM: SAMSUNG: Fix HAVE_S3C_RTC warnings
ARM: SAMSUNG: Fix HAVE_S3C2410_I2C warnings
ARM: SAMSUNG: Fix HAVE_S3C2410_WATCHDOG warnings
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This patch fixes followng build warnings.
warning: (ARCH_S5P64X0 && <choice> || ARCH_S5PC100 && <choice> ||
ARCH_S5PV210 && <choice> || ARCH_S5PV310 && <choice>)
selects HAVE_S3C_RTC which has unmet direct dependencies (RTC_CLASS)
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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This patch fixes following warnings.
warning: (ARCH_S3C2410 && <choice> || ARCH_S3C64XX && <choice> ||
ARCH_S5P64X0 && <choice> || ARCH_S5PC100 && <choice> ||
ARCH_S5PV210 && <choice> || ARCH_S5PV310 && <choice>)
selects HAVE_S3C2410_I2C which has unmet direct dependencies (I2C)
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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Fix build warnings
warning: (ARCH_S3C64XX && <choice> && WATCHDOG || ARCH_S5P64X0 && <choice> && WATCHDOG ||
ARCH_S5P6442 && <choice> && WATCHDOG || ARCH_S5PC100 && <choice> ||
ARCH_S5PV210 && <choice> || ARCH_S5PV310 && <choice> || MACH_SMDK6410 && ARCH_S3C64XX)
selects HAVE_S3C2410_WATCHDOG which has unmet direct dependencies (WATCHDOG)
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
[kgene.kim@samsung.com: Added fix same warning(mach-s3c64xx/Kconfig)]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/lethal/fbdev-2.6
* 'fbdev-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/fbdev-2.6:
fsl-diu-fb: drop dead ioctl define
MAINTAINERS: Add an fbdev git tree entry.
OMAP: DSS: Fix documentation regarding 'vram' kernel parameter
OMAP: VRAM: Fix boot-time memory allocation
OMAP: VRAM: improve VRAM error prints
sisfb: limit POST memory test according to PCI resource length
fbdev: sh_mobile_lcdc: use correct number of modes, when using the default
fbdev: sh_mobile_lcdc: use the standard CEA-861 720p timing
fbdev: sh_mobile_hdmi: properly clean up modedb on monitor unplug
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The fsl-diu-fb driver no longer uses this define, and we have a common one
to cover this already (FBIO_WAITFORVSYNC).
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Now that there's an fbdev git tree (this is also what is pulled in to
-next), stub it in to the MAINTAINERS entry.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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The DSS documentation didn't mention the option to give the VRAM start
address.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Use memblock_free() and memblock_remove() to remove the allocated or
reserved VRAM area from normal kernel memory.
This is a slightly modified version of patches from Felipe Contreras and
Namhyung Kim.
Reported-by: Felipe Contreras <felipe.contreras@gmail.com>
Reported-by: Namhyung Kim <namhyung@gmail.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Improve the error prints to give more information about the offending
address & size.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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If the POST memory test fails, the driver may access illegal
memory areas. Instead of hard coding the maximum size, set it
according to the PCI resource length (an additional check is needed in
sisfb_post_map_vram() to ensure it's big enough). DRAM sizing will later
adjust video_size to the correct value.
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: Thomas Winischhofer <thomas@winischhofer.net>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6 into fbdev-fixes-for-linus
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Fix zero mode number, when using the default 720p mode.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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sh_mobile_lcdcfb.c has a hard-coded 720p video mode, used as default, if none
is explicitly specified by the platform. Adjust its timing to match the CEA
standard. Also add an explicit refresh rate value, which is needed, when used
with HDMI, to be able to recognise the default 720p mode as a pre-programmed
VIC #4.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Even though this is not a problem currently, it is better to clear the freed
pointer and nullify the length of the freed memory.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6
* 'sh-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6:
sh: intc: Fix up build failure introduced by radix tree changes.
MAINTAINERS: update the sh git tree entry.
sh: clkfwk: fix up compiler warnings.
sh: intc: Fix up initializers for gcc 4.5.
rtc: rtc-sh - fix a memory leak
* 'rmobile-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6:
ARM: mach-shmobile: ap4evb: add fsib 44100Hz rate
MAINTAINERS: update the ARM SH-Mobile git tree entry.
ARM: mach-shmobile: ap4evb: Mark NOR boot loader partitions read-only.
ARM: mach-shmobile: intc-sh7372: fix interrupt number
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Tested-by: Tony SIM <chinyeow.sim.xt@renesas.com>
Tested-by: TAKEI Mitsuharu <takei.andr@gmail.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Reflect the recent tree restructuring.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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This makes the loader and bootenv partitions read-only under MTD for the
on-board NOR flash.
Signed-off-by: Yusuke Goda <yusuke.goda.sx@renesas.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Signed-off-by: Tony SIM <chinyeow.sim.xt@renesas.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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The radix tree retry logic got a bit of an overhaul and subsequently
broke the virtual IRQ subgroup build. Simply switch over to
radix_tree_deref_retry() as per the filemap changes, which the virq
lookup logic was modelled after in the first place.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into sh/urgent
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CC drivers/sh/clk/core.o
drivers/sh/clk/core.c: In function 'clk_round_parent':
drivers/sh/clk/core.c:574: warning: format '%lu' expects type 'long unsigned int', but argument 2 has type 'unsigned int'
drivers/sh/clk/core.c:594: warning: format '%lu' expects type 'long unsigned int', but argument 2 has type 'unsigned int'
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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request_mem_region() will call kzalloc to allocate memory for struct resource.
release_resource() unregisters the resource but does not free the allocated
memory, thus use release_mem_region() instead to fix the memory leak.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Reflect the recent tree restructuring.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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The _INTC_ARRAY() initializer presently does a NULL test which blows up
as a non-constant initializer under gcc 4.5. This switches over to a type
test to account for NULL initializers explicitly.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6:
slub: Fix slub_lock down/up imbalance
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There are two places, that do not release the slub_lock.
Respective bugs were introduced by sysfs changes ab4d5ed5 (slub: Enable
sysfs support for !CONFIG_SLUB_DEBUG) and 2bce6485 ( slub: Allow removal
of slab caches during boot).
Acked-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2:
ocfs2: Change some lock status member in ocfs2_lock_res to char.
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