| Commit message (Collapse) | Author | Age | Files | Lines |
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If the NULL test on pr is needed, then the dereference should be after the
NULL test.
A simplified version of the semantic match that detects this problem is as
follows (http://coccinelle.lip6.fr/):
// <smpl>
@match exists@
expression x, E;
identifier fld;
@@
* x->fld
... when != \(x = E\|&x\)
* x == NULL
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
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Annote acpi_processor_add with cpuinit since it calls a cpuinit function
acpi_processor_power_init and fixes a section mismatch warning.
We were warned by the following warning:
LD drivers/acpi/processor.o
WARNING: drivers/acpi/processor.o(.text+0x1829): Section mismatch in
reference from the function acpi_processor_add() to the function
.cpuinit.text:acpi_processor_power_init()
The function acpi_processor_add() references
the function __cpuinit acpi_processor_power_init().
This is often because acpi_processor_add lacks a __cpuinit
annotation or the annotation of acpi_processor_power_init is wrong.
Signed-off-by: Rakib Mullick <rakib.mullick@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
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If the ACPI methods return an error code, we must return -EINVAL to userspace
to flag the error. Right now we pass the (positive) number right through,
which causes echo to keep writing bogus values.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
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proc.c and video.c are a bit sloppy around types and style,
confusing gcc for a new feature that'll be in 2.6.33 and will
cause a warning on the current code.
This patch changes
if (foo + 1 > sizeof bar)
into
if (foo >= sizeof(bar))
which is more kernel-style.
it also changes a variable in proc.c to unsigned; it gets assigned
a value from an unsigned type, and is then only compared for > not
for negative, so using unsigned is just outright the right type
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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* 'docs-next' of git://git.lwn.net/linux-2.6:
Update flex_arrays.txt
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The 2.6.32 merge window brought a number of changes to the flexible array
API; this patch updates the documentation to match the new state of
affairs.
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm:
dlm: fix socket fd translation
dlm: fix lowcomms_connect_node for sctp
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The code to set up sctp sockets was not using the sockfd_lookup()
and sockfd_put() routines to translate an fd to a socket. The
direct fget and fput calls were resulting in error messages from
alloc_fd().
Also clean up two log messages and remove a third, related to
setting up sctp associations.
Signed-off-by: David Teigland <teigland@redhat.com>
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The recently added dlm_lowcomms_connect_node() from
391fbdc5d527149578490db2f1619951d91f3561 does not work
when using SCTP instead of TCP. The sctp connection code
has nothing to do without data to send. Check for no data
in the sctp connection code and do nothing instead of
triggering a BUG. Also have connect_node() do nothing
when the protocol is sctp.
Signed-off-by: David Teigland <teigland@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
Revert "x86: linker script syntax nits"
x86, perf_event: Rename 'performance counter interrupt'
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This reverts commit e9a63a4e559fbdc522072281d05e6b13c1022f4b.
This breaks older binutils, where sink-less asserts are broken.
See this commit for further details:
d2ba8b2: x86: Fix assert syntax in vmlinux.lds.S
Acked-by: "H. Peter Anvin" <hpa@zytor.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
LKML-Reference: <4AD6523D.5030909@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Merge reason: pull in latest, to be able to revert a patch there.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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In 'cdd6c482c9ff9c55475ee7392ec8f672eddb7be6', we renamed
Performance Counters -> Performance Events.
The name showed up in /proc/interrupts also needs a change. I use
PMI (Performance monitoring interrupt) here, since it is the
official name used in Intel's documents.
Signed-off-by: Li Hong <lihong.hi@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <20091014105039.GA22670@uhli>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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The destination keyring specified to request_key() and co. is made available to
the process that instantiates the key (the slave process started by
/sbin/request-key typically). This is passed in the request_key_auth struct as
the dest_keyring member.
keyctl_instantiate_key and keyctl_negate_key() call get_instantiation_keyring()
to get the keyring to attach the newly constructed key to at the end of
instantiation. This may be given a specific keyring into which a link will be
made later, or it may be asked to find the keyring passed to request_key(). In
the former case, it returns a keyring with the refcount incremented by
lookup_user_key(); in the latter case, it returns the keyring from the
request_key_auth struct - and does _not_ increment the refcount.
The latter case will eventually result in an oops when the keyring prematurely
runs out of references and gets destroyed. The effect may take some time to
show up as the key is destroyed lazily.
To fix this, the keyring returned by get_instantiation_keyring() must always
have its refcount incremented, no matter where it comes from.
This can be tested by setting /etc/request-key.conf to:
#OP TYPE DESCRIPTION CALLOUT INFO PROGRAM ARG1 ARG2 ARG3 ...
#====== ======= =============== =============== ===============================
create * test:* * |/bin/false %u %g %d %{user:_display}
negate * * * /bin/keyctl negate %k 10 @u
and then doing:
keyctl add user _display aaaaaaaa @u
while keyctl request2 user test:x test:x @u &&
keyctl list @u;
do
keyctl request2 user test:x test:x @u;
sleep 31;
keyctl list @u;
done
which will oops eventually. Changing the negate line to have @u rather than
%S at the end is important as that forces the latter case by passing a special
keyring ID rather than an actual keyring ID.
Reported-by: Alexander Zangerl <az@bond.edu.au>
Signed-off-by: David Howells <dhowells@redhat.com>
Tested-by: Alexander Zangerl <az@bond.edu.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
powerpc/pci: Fix MODPOST warning
powerpc/oprofile: Add ppc750 CL as supported by oprofile
powerpc: warning: allocated section `.data_nosave' not in segment
powerpc/kgdb: Fix build failure caused by "kgdb.c: unused variable 'acc'"
powerpc: Fix hypervisor TLB batching
powerpc/mm: Fix hang accessing top of vmalloc space
powerpc: Fix memory leak in axon_msi.c
powerpc/pmac: Fix issues with sleep on some powerbooks
powerpc64/ftrace: use PACA to retrieve TOC in mod_return_to_handler
powerpc/ftrace: show real return addresses in modules
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The mod_return_to_handler needs to switch to the kernel TOC before
jumping to a the kernel code. It currently does this by looking
at the kernel function data and retrieves the TOC that way.
Not only is this inefficient, it also breaks with a relocatable kernel.
The PACA contains the kernel TOC and we can easily retrieve it that
way.
Reported-by: Sachin Sant <sachinp@in.ibm.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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When the function graph tracer is enabled, it replaces the return address
with a hook back to the tracer. This makes back traces see the hook instead
of the actual return address.
The current code also shows the real address by checking if the return
address jumps to the return_to_handler. If it is, is also prints out
the saved real return address.
On powerpc64, some modules may return to mod_return_to_handler, which
is not checked. This patch will also show the real address if a return
is to mod_return_to_handler as well.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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making a powerpc target with PCI support, shows the
following warning:
MODPOST vmlinux.o
WARNING: vmlinux.o(.text+0x10430): Section mismatch in reference from the
function pcibios_allocate_bus_resources() to the function .init.text:reparent_resources()
The function pcibios_allocate_bus_resources() references
the function __init reparent_resources().
This is often because pcibios_allocate_bus_resources lacks a __init
annotation or the annotation of reparent_resources is wrong.
This patch fix this warning by removing the __init
annotation before reparent_resources.
Signed-off-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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Here's a patch that adds the ppc750 CL cpu as supported by oprofile.
Signed-off-by: Dragos Tatulea <dtatulea@ixiacom.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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We need to align before the output section. Having the align inside
the output section causes the linker to put some filler in there,
which makes it a non-empty section, but this section isn't assigned to
a segment so you get a warning from the linker.
Signed-off-by: Sean MacLennan <smaclennan@pikatech.com>
Acked-by: Segher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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'acc' isn't used anywhere and thus triggers gcc warning, which causes
build error with CONFIG_PPC_DISABLE_WERROR=n (default):
cc1: warnings being treated as errors
arch/powerpc/kernel/kgdb.c: In function 'gdb_regs_to_pt_regs':
arch/powerpc/kernel/kgdb.c:289: warning: unused variable 'acc'
make[1]: *** [arch/powerpc/kernel/kgdb.o] Error 1
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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Profiling of a page fault scalability microbenchmark shows flush_hash_range
is not calling the batch hpte invalidate hcall (H_BULK_REMOVE).
It turns out we have a duplicate firmware feature for hcall-bulk and the
current setup code stops after finding the first match. This meant we never
batch and always do individual invalidates.
The patch below removes the duplicate and shifts FW_FEATURE_CMO to close
the gap. With the patch applied the single threaded page fault rate improves
from 217169 to 238755 per second on a POWER5 test box, a 10% improvement.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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On pSeries, we always force the IO space to be mapped using 4K
pages even with a 64K base page size to cope with some limitations
in the HV interface to some devices.
However, the SLB miss handler code to discriminate between vmalloc
and ioremap space uses a CPU feature section such that the code
is nop'ed out when the processor support large pages non-cachable
mappings.
Thus, we end up always using the ioremap page size for vmalloc
segments on such processors, causing a discrepency between the
segment and the hash table, and thus a hang continously hashing
the page.
It works for the first segment of the vmalloc space since that
segment is "bolted" in by C code correctly, and thankfully we
almost never use the vmalloc space beyond the first segment,
but the new percpu code made the bug happen.
This fixes it by removing the feature section from the assembly,
we now always do the comparison between vmalloc and ioremap.
Signed-off-by; Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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cppcheck found a memory leak in axon_msi, if dcr_base or dcr_len are zero,
we have already allocated msic, so we should free it in the error path.
Signed-off-by: Eric Sesterhenn <eric.sesterhenn@lsexperts.de>
Acked-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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Since the change of how interrupts are disabled during suspend,
certain PowerBook models started exhibiting various issues during
suspend or resume from sleep.
I finally tracked it down to the code that runs various "platform"
functions (kind of little scripts extracted from the device-tree),
which uses our i2c and PMU drivers expecting interrutps to work,
and at a time where with the new scheme, they have been disabled.
This causes timeouts internally which for some reason results in
the PMU being unable to see the trackpad, among other issues, really
it depends on the machine. Most of the time, we fail to properly adjust
some clocks for suspend/resume so the results are not always
predictable.
This patch fixes it by using IRQF_TIMER for both the PMU and the I2C
interrupts. I prefer doing it this way than moving the call sites since
I really want those platform functions to still be called after all
drivers (and before sysdevs).
We also do a slight cleanup to via-pmu.c driver to make sure the
ADB autopoll mask is handled correctly when doing bus resets
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6:
ACPI button: don't try to use a non-existent lid device
ACPI: video: Loosen strictness of video bus detection code
eeepc-laptop: Prevent a panic when disabling RT2860 wireless when associated
eeepc-laptop: Properly annote eeepc_enable_camera().
ACPI / PCI: Fix NULL pointer dereference in acpi_get_pci_dev() (rev. 2)
fujitsu-laptop: address missed led-class ifdef fixup
ACPI: Kconfig, fix proc aggregator text
ACPI: add AC/DC notifier
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If a call comes in to check the lid state but there's no lid device
present, we should return -ENODEV.
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Len Brown <len.brown@intel.com>
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A follow-up 2.6.32-rc1's
1e384cb0f9a940f2a431d1708f963987e61d71e3
"fujitsu-laptop: support led-class as module"
It's a trivial fix for one of the CONFIG_LEDS_CLASS ifdefs
which was somehow missed in the original patch.
Signed-off-by: Jonathan Woithe <jwoithe@physics.adelaide.edu.au>
Signed-off-by: Len Brown <len.brown@intel.com>
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Fix two typos in the Kconfig text about ACPI_PROCESSOR_AGGREGATOR.
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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Add an ACPI event notifier for AC/DC connect/disconnect events.
Signed-off-by: Mark Langsdorf <mark.langsdorf@amd.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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BugLink: http://bugs.launchpad.net/bugs/333386
Currently a video bus device must (beside other criteria) define _DOD and
_DOS methods to be considered a video device.
Some broken BIOSes prevented working backlight control by only defining both
for one (non-existing bus) and only _DOD for the rest. With this patch in
place the other bus definitions were considered too and backlight control
started to work again.
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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This works around what I think is actually a bug in rt2860sta which is
triggered when the hardware "disappears" from beneath the driver, i.e. when
wireless is toggled off via ACPI. It does so by ensuring that the rfkill
soft-block flag is set before the hardware is disabled.
I do not know whether this patch is required if rt2800pci is in use instead
of rt2860sta; at the time of submission of this patch, I've not been able to
test this.
(Ref. http://bugzilla.kernel.org/show_bug.cgi?id=13390)
Signed-off-by: Darren Salt <linux@youmustbejoking.demon.co.uk>
Signed-off-by: Len Brown <len.brown@intel.com>
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Currently the annotation for function eeepc_enable_camera() is
__init, and refers to a
function eeepc_hotk_add() which is non-init. Use __devinit for both
functions which is
more appropriate and fixes a section mismatch warning.
We were warned by the following warning:
LD drivers/platform/x86/built-in.o
WARNING: drivers/platform/x86/built-in.o(.text+0x12e1): Section
mismatch in reference from the function eeepc_hotk_add() to the
function .init.text:eeepc_enable_camera()
The function eeepc_hotk_add() references
the function __init eeepc_enable_camera().
This is often because eeepc_hotk_add lacks a __init
annotation or the annotation of eeepc_enable_camera is wrong.
Signed-off-by: Rakib Mullick <rakib.mullick@gmail.com>
Signed-off-by: Corentin Chary <corentincj@iksaif.net>
Signed-off-by: Len Brown <len.brown@intel.com>
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acpi_get_pci_dev() may be called for a non-PCI device, in which case
it should return NULL. However, it assumes that every handle it
finds in the ACPI CA name space, between given device handle and the
PCI root bridge handle, corresponds to a PCI-to-PCI bridge with an
existing secondary bus. For this reason, when it finds a struct
pci_dev object corresponding to one of them, it doesn't check if
its 'subordinate' field is a valid pointer. This obviously leads to
a NULL pointer dereference if acpi_get_pci_dev() is called for a
non-PCI device with a PCI parent which is not a bridge.
To fix this issue make acpi_get_pci_dev() check if pdev->subordinate
is not NULL for every device it finds on the path between the root
bridge and the device it's supposed to get to and return NULL if the
"target" device cannot be found.
http://bugzilla.kernel.org/show_bug.cgi?id=14129
(worked in 2.6.30, regression in 2.6.31)
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Reported-by: Danny Feng <dfeng@redhat.com>
Reviewed-by: Alex Chiang <achiang@hp.com>
Tested-by: chepioq <chepioq@gmail.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6
* 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6:
OMAP2xxx clock: set up clockdomain pointer in struct clk
OMAP: Fix race condition with autodeps
omap: McBSP: Fix incorrect receiver stop in omap_mcbsp_stop
omap: Initialization of SDRC params on Zoom2
omap: RX-51: Drop I2C-1 speed to 2200
omap: SDMA: Fixing bug in omap_dma_set_global_params()
omap: CONFIG_ISP1301_OMAP redefined in Beagle defconfig
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omap-fixes-for-linus
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clock24xx.c is missing a omap2_init_clk_clkdm() in its
omap2_clk_init() function. Among other bad effects, this causes the
OMAP hwmod layer to oops on boot.
Thanks to Carlos Aguiar <carlos.aguiar@indt.org.br> and Stefano
Panella <Stefano.Panella@csr.com> for reporting this bug. Thanks to Tony
Lindgren <tony@atomide.com> for N800 booting advice.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Carlos Aguiar <carlos.aguiar@indt.org.br>
Cc: Stefano Panella <Stefano.Panella@csr.com>
Cc: Tony Lindgren <tony@atomide.com>
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There is a possible race condition in clockdomain
code handling hw supported idle transitions.
When multiple autodeps dependencies are being added
or removed, a transition of still remaining dependent
powerdomain can result in false readings of the
state counter. This is especially fatal for off mode
state counter, as it could result in a driver not
noticing a context loss.
Fixed by disabling hw supported state transitions
when autodeps are being changed.
Signed-off-by: Kalle Jokiniemi <kalle.jokiniemi@digia.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
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This small typo written by author causes that McBSP receiver is disabled on
OMAP2430 and OMAP3430 even if only transmitter is stopped. This was noted
with ALSA SoC where simultaneous recording halted if playback was stopped
first.
Signed-off-by: Jarkko Nikula <jhnikula@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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This patch initializes the correct SDRC settings required
for DVFS on Zoom2.
Signed-off-by: Teerth Reddy <teerth@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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The I2C-1 bus frequency on RX-51 should be 2.2 MHz. The speed is limited
by TWL5030/GAIA; a higher speed could lead to errors on the interface. The
maximum speed depends on the system clock for GAIA: 2.2 MHz (if 19.2 MHz),
2.4 MHz (26 MHz) or 2.9 MHz (38.4 MHz).
Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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Argument tparams was not being used to program
global register GCR.HI_THREAD_RESERVED. This patch fixes the same.
Signed-off-by: Anuj Aggarwal <anuj.aggarwal@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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The symbol CONFIG_ISP1301_OMAP was defined twice in the
defconfig. This was causing the warning:
arch/arm/configs/omap3_beagle_defconfig:972:warning:
override: reassigning to symbol ISP1301_OMAP
Signed-off-by: Sanjeev Premi <premi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable
* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable:
Btrfs: always pin metadata in discard mode
Btrfs: enable discard support
Btrfs: add -o discard option
Btrfs: properly wait log writers during log sync
Btrfs: fix possible ENOSPC problems with truncate
Btrfs: fix btrfs acl #ifdef checks
Btrfs: streamline tree-log btree block writeout
Btrfs: avoid tree log commit when there are no changes
Btrfs: only write one super copy during fsync
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