Thomas Gleixner [Fri, 11 Mar 2011 20:22:14 +0000 (21:22 +0100)]
genirq: Add chip flag to force mask on suspend
On suspend we disable all interrupts in the core code, but this does
not mask the interrupt line in the default implementation as we use a
lazy disable approach. That means we mark the interrupt disabled, but
leave the hardware unmasked. That's an optimization because we avoid
the hardware access for the common case where no interrupt happens
after we marked it disabled. If an interrupt happens, then the
interrupt flow handler masks the line at the hardware level and marks
it pending.
Suspend makes use of this delayed disable as it "disables" all
interrupts when preparing the suspend transition. Right before the
system goes into hardware suspend state it checks whether one of the
interrupts which is marked as a wakeup interrupt came in after
disabling it.
Most interrupt chips have a separate register which selects the
interrupts which can wake up the system from suspend, so we don't have
to mask any on the non wakeup interrupts.
But now we have to deal with brilliant designed hardware which lacks
such a wakeup configuration facility. For such hardware it's necessary
to mask all non wakeup interrupts before going into suspend in order
to avoid the wakeup from random interrupts.
Rather than working around this in the affected interrupt chip
implementations we can solve this elegant in the core code itself.
Add a flag IRQCHIP_MASK_ON_SUSPEND which can be set by the irq chip
implementation to indicate, that the interrupts which are not selected
as wakeup sources must be masked in the suspend path. Mask them in the
loop which checks the wakeup interrupts pending flag.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>
LKML-Reference: <alpine.LFD.2.00.1103112112310.2787@localhost6.localdomain6>
Thomas Gleixner [Wed, 23 Feb 2011 23:52:23 +0000 (23:52 +0000)]
genirq: Provide forced interrupt threading
Add a commandline parameter "threadirqs" which forces all interrupts except
those marked IRQF_NO_THREAD to run threaded. That's mostly a debug option to
allow retrieving better debug data from crashing interrupt handlers. If
"threadirqs" is not enabled on the kernel command line, then there is no
impact in the interrupt hotpath.
Architecture code needs to select CONFIG_IRQ_FORCED_THREADING after
marking the interrupts which cant be threaded IRQF_NO_THREAD. All
interrupts which have IRQF_TIMER set are implict marked
IRQF_NO_THREAD. Also all PER_CPU interrupts are excluded.
Forced threading hard interrupts also forces all soft interrupt
handling into thread context.
When enabled it might slow down things a bit, but for debugging problems in
interrupt code it's a reasonable penalty as it does not immediately
crash and burn the machine when an interrupt handler is buggy.
Some test results on a Core2Duo machine:
Cache cold run of:
# time git grep irq_desc
non-threaded threaded
real 1m18.741s 1m19.061s
user 0m1.874s 0m1.757s
sys 0m5.843s 0m5.427s
Thomas Gleixner [Wed, 23 Feb 2011 23:52:21 +0000 (23:52 +0000)]
sched: Switch wait_task_inactive to schedule_hrtimeout()
When we force thread hard and soft interrupts the startup of ksoftirqd
would hang in kthread_bind() when wait_task_inactive() calls
schedule_timeout_uninterruptible() because there is no softirq yet
which will wake us up.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <20110223234956.677109139@linutronix.de>
Thomas Gleixner [Wed, 23 Feb 2011 23:52:18 +0000 (23:52 +0000)]
genirq: Add IRQF_NO_THREAD
Some low level interrupts cannot be threaded even when we force thread
all interrupt handlers. Add a flag to annotate such interrupts. Add
all timer interrupts to this category by default.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <20110223234956.578893460@linutronix.de>
Thomas Gleixner [Wed, 23 Feb 2011 23:52:13 +0000 (23:52 +0000)]
genirq: Prepare the handling of shared oneshot interrupts
For level type interrupts we need to track how many threads are on
flight to avoid useless interrupt storms when not all thread handlers
have finished yet. Keep track of the woken threads and only unmask
when there are no more threads in flight.
Yes, I'm lazy and using a bitfield. But not only because I'm lazy, the
main reason is that it's way simpler than using a refcount. A refcount
based solution would need to keep track of various things like
crashing the irq thread, spurious interrupts coming in,
disables/enables, free_irq() and some more. The bitfield keeps the
tracking simple and makes things just work. It's also nicely confined
to the thread code pathes and does not require additional checks all
over the place.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <20110223234956.388095876@linutronix.de>
Thomas Gleixner [Fri, 25 Feb 2011 16:17:18 +0000 (17:17 +0100)]
genirq: Make warning in handle_percpu_event useful
The WARN_ON_ONCE in handle_percpu_event() which emits a warning when
an action handler returns with interrupts enabled is not really
useful. It does not reveal the interrupt number and handler function
which caused it. Make it WARN_ONCE() and add the information.
Reported-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Thomas Gleixner [Wed, 23 Feb 2011 16:47:41 +0000 (17:47 +0100)]
x86: ioapic: Implement and use io_apic_setup_irq_pin_once()
io_apic_set_pci_routing() and mp_save_irq() check the pin_programmed
bit before calling io_apic_setup_irq_pin() and set the bit when the
pin was setup.
Move that duplicated code into a separate function and use it.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Thomas Gleixner [Wed, 23 Feb 2011 16:33:53 +0000 (17:33 +0100)]
x86: ioapic: Remove useless inlines
There is no point to have irq_trigger() and irq_polarity() as wrappers
around the MPBIOS_* camel case functions. Get rid of both the inlines
and the ugly camel case.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Thomas Gleixner [Wed, 23 Feb 2011 12:07:54 +0000 (13:07 +0100)]
x86: ioapic: Use new setup function in pre_init_apic_IRQ0()
Remove the duplicated code and call the function. It does not matter
whether we allocated the cfg before calling setup_local_APIC() and we
can set the irq chip and handler after that as well.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Thomas Gleixner [Wed, 23 Feb 2011 12:00:56 +0000 (13:00 +0100)]
x86: ioapic: Add io_apic_setup_irq_pin()
There are about four places in the ioapic code which do exactly the
same setup sequence. Also the OF based ioapic setup needs that
function to avoid putting the OF specific code into ioapic.c
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Currently arch_disable_smp_support() on x86 disables only the
support for the IOAPIC and is also compiled in if SMP-support is
not.
Therefore this function is renamed to disable_ioapic_support(),
which meets its purpose and is only compiled in the kernel
when IOAPIC support is also.
A new arch_disable_smp_support() is created in smpboot.c,
which calls disable_ioapic_support() and gets only compiled
in the kernel when SMP support is also.
Signed-off-by: Henrik Kretzschmar <henne@nachtwindheim.de>
LKML-Reference: <1298385487-4708-3-git-send-email-henne@nachtwindheim.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Jan Beulich [Thu, 17 Feb 2011 13:39:05 +0000 (13:39 +0000)]
genirq: Streamline kernel/irq/Kconfig
"def_bool n" without prompt is pointless, these should be just "bool".
[ tglx: Adapted to latest changes ]
Signed-off-by: Jan Beulich <jbeulich@novell.com>
LKML-Reference: <4D5D3309020000780003264A@vpn.id2.novell.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Thomas Gleixner [Tue, 22 Feb 2011 11:50:12 +0000 (12:50 +0100)]
genirq: Use the correct variable for note_interrupt
note_interrupt wants to be called with the combined result of all
handlers called, not with the last one. If it's a shared interrupt
then the last handler might return IRQ_NONE often enough to trigger
the spurious dectector which turns off a perfectly fine working
interrupt line. Bug was introduced in commit 1277a532(genirq: Simplify
handle_irq_event()).
Yes, I really messed up there. First the variable ret should not have
been named differently to avoid similarity with retval. Second it
should have been declared in the do {} loop.
Rename it to res and move it into the do {} loop and vanish under a
huge brown paperbag.
Reported-bisected-tested-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Linus Torvalds [Tue, 22 Feb 2011 01:25:00 +0000 (17:25 -0800)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ecryptfs/ecryptfs-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ecryptfs/ecryptfs-2.6:
eCryptfs: Copy up lower inode attrs in getattr
ecryptfs: read on a directory should return EISDIR if not supported
eCryptfs: Handle NULL nameidata pointers
eCryptfs: Revert "dont call lookup_one_len to avoid NULL nameidata"
Indan Zupancic [Thu, 17 Feb 2011 01:41:49 +0000 (02:41 +0100)]
drm/i915: Do not handle backlight combination mode specially
The current code does not follow Intel documentation: It misses some things
and does other, undocumented things. This causes wrong backlight values in
certain conditions. Instead of adding tricky code handling badly documented
and rare corner cases, don't handle combination mode specially at all. This
way PCI_LBPC is never touched and weird things shouldn't happen.
If combination mode is enabled, then the only downside is that changing the
brightness has a greater granularity (the LBPC value), but LBPC is at most
254 and the maximum is in the thousands, so this is no real functional loss.
A potential problem with not handling combined mode is that a brightness of
max * PCI_LBPC is not bright enough. However, this is very unlikely because
from the documentation LBPC seems to act as a scaling factor and doesn't look
like it's supposed to be changed after boot. The value at boot should always
result in a bright enough screen.
IMPORTANT: However, although usually the above is true, it may not be when
people ran an older (2.6.37) kernel which messed up the LBPC register, and
they are unlucky enough to have a BIOS that saves and restores the LBPC value.
Then a good kernel may seem to not work: Max brightness isn't bright enough.
If this happens people should boot back into the old kernel, set brightness
to the maximum, and then reboot. After that everything should be fine.
For more information see the below links. This fixes bugs:
We force particular alignment when we generate attribute structures
when generation MODULE_VERSION() data and we need to make sure that
this alignment is followed when we iterate over these structures,
otherwise we may crash on platforms whose natural alignment is not
sizeof(void *), such as m68k.
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Dmitry Torokhov <dtor@vmware.com>
[ There are more issues here, but the fixes are incredibly ugly - Linus ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Ahmed S. Darwish [Mon, 21 Feb 2011 04:08:35 +0000 (20:08 -0800)]
Documentation: explain [KMG] parameter suffix
The '[KMG]' suffix is commonly described after a number of kernel
parameter values documentation. Explicitly state its semantics.
Signed-off-by: Ahmed S. Darwish <darwish.07@gmail.com> Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Mon, 21 Feb 2011 22:57:04 +0000 (14:57 -0800)]
Merge branch 'fixes' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'fixes' of master.kernel.org:/home/rmk/linux-2.6-arm:
ARM: 6745/1: kprobes insn decoding fix
ARM: tlb: move noMMU tlb_flush() to asm/tlb.h
ARM: tlb: delay page freeing for SMP and ARMv7 CPUs
ARM: Keep exit text/data around for SMP_ON_UP
ARM: Ensure predictable endian state on signal handler entry
ARM: 6740/1: Place correctly notes section in the linker script
ARM: 6700/1: SPEAr: Correct SOC config base address for spear320
ARM: 6722/1: SPEAr: sp810: switch to slow mode before reset
ARM: 6712/1: SPEAr: replace readl(), writel() with relaxed versions in uncompress.h
ARM: 6720/1: SPEAr: Append UL to VMALLOC_END
ARM: 6676/1: Correct the cpu_architecture() function for ARMv7
ARM: 6739/1: update .gitignore for boot/compressed
ARM: 6743/1: errata: interrupted ICALLUIS may prevent completion of broadcasted operation
ARM: 6742/1: pmu: avoid setting IRQ affinity on UP systems
ARM: 6741/1: errata: pl310 cache sync operation may be faulty
Keng-Yu Lin [Tue, 15 Feb 2011 09:36:07 +0000 (17:36 +0800)]
dell-laptop: Toggle the unsupported hardware killswitch
It is found on Dell Inspiron 1018 that the firmware reports that the hardware
killswitch is not supported. This makes the rfkill key not functional.
This patch forces the driver to toggle the firmware rfkill status in the case
that the hardware killswitch is indicated as unsupported by the firmware.
Signed-off-by: Keng-Yu Lin <keng-yu.lin@canonical.com> Tested-by: Alessio Igor Bogani <abogani@texware.it> Signed-off-by: Matthew Garrett <mjg@redhat.com>
Seth Forshee [Fri, 14 Jan 2011 21:54:39 +0000 (15:54 -0600)]
thinkpad_acpi: Always report scancodes for hotkeys
Some thinkpad hotkeys report key codes like KEY_FN_F8 when something
like KEY_VOLUMEDOWN is desired. Always provide the scan codes in
addition to the key codes to assist with debugging these issues. Also
send the scan code before the key code to match what other drivers do,
as some userspace utilities expect this ordering.
Signed-off-by: Seth Forshee <seth.forshee@canonical.com> Signed-off-by: Matthew Garrett <mjg@redhat.com>
Randy Dunlap [Thu, 20 Jan 2011 20:48:36 +0000 (12:48 -0800)]
platform/x86: ideapad-laptop depends on INPUT
Most platform/x86 drivers that use INPUT_SPARSEKMAP also depend on INPUT,
so do the same for ideapad-laptop. This fixes a kconfig warning and
subsequent build errors when CONFIG_INPUT is disabled.
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Matthew Garrett <mjg@redhat.com> Cc: platform-driver-x86@vger.kernel.org Signed-off-by: Matthew Garrett <mjg@redhat.com>
Don't allow everybody to change ACPI settings. The comment says that it
is done deliberatelly, however, the comment before disp_proc_write()
says that at least one of these setting is experimental.
Signed-off-by: Vasiliy Kulikov <segoon@openwall.com> Signed-off-by: Matthew Garrett <mjg@redhat.com>
Thomas Gleixner [Mon, 7 Feb 2011 20:41:30 +0000 (21:41 +0100)]
platform-drivers: x86: pmic: Use request_irq instead of chained handler
There is no need to install a chained handler for this hardware. This
is a plain x86 IOAPIC interrupt which is handled by the core code
perfectly fine. There is nothing special about demultiplexing these
gpio interrupts which justifies a custom hack. Replace it by a plain
old interrupt handler installed with request_irq. That makes the code
agnostic about the underlying primary interrupt hardware. The overhead
for this is minimal, but it gives us the advantage of accounting,
balancing and to detect interrupt storms. gpio interrupts are not
really that performance critical.
Patch fixups from akpm
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tyler Hicks [Tue, 11 Jan 2011 18:43:42 +0000 (12:43 -0600)]
eCryptfs: Copy up lower inode attrs in getattr
The lower filesystem may do some type of inode revalidation during a
getattr call. eCryptfs should take advantage of that by copying the
lower inode attributes to the eCryptfs inode after a call to
vfs_getattr() on the lower inode.
I originally wrote this fix while working on eCryptfs on nfsv3 support,
but discovered it also fixed an eCryptfs on ext4 nanosecond timestamp
bug that was reported.
Andy Whitcroft [Wed, 16 Feb 2011 04:49:59 +0000 (04:49 +0000)]
ecryptfs: read on a directory should return EISDIR if not supported
read() calls against a file descriptor connected to a directory are
incorrectly returning EINVAL rather than EISDIR:
[EISDIR]
[XSI] [Option Start] The fildes argument refers to a directory and the
implementation does not allow the directory to be read using read()
or pread(). The readdir() function should be used instead. [Option End]
This occurs because we do not have a .read operation defined for
ecryptfs directories. Connect this up to generic_read_dir().
BugLink: http://bugs.launchpad.net/bugs/719691 Signed-off-by: Andy Whitcroft <apw@canonical.com> Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com>
Yinghai Lu [Sat, 19 Feb 2011 19:07:37 +0000 (11:07 -0800)]
genirq: Use IRQ_BITMAP_BITS as search size in irq_alloc_descs()
The runtime expansion of nr_irqs does not take into account that
bitmap_find_next_zero_area() returns "start" + size in case the search
for an matching zero area fails. That results in a start value which
can be completely off and is not covered by the following
expand_nr_irqs() and possibly outside of the absolute limit. But we
use it without further checking.
Use IRQ_BITMAP_BITS as the limit for the bitmap search and expand
nr_irqs when the start bit is beyond nr_irqs. So start is always
pointing to the correct area in the bitmap. nr_irqs is just the limit
for irq enumerations, not the real limit for the irq space.
[ tglx: Let irq_expand_nr_irqs() take the new upper end so we do not
expand nr_irqs more than necessary. Made changelog readable ]
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <4D6014F9.8040605@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Nicolas Pitre [Mon, 21 Feb 2011 03:37:20 +0000 (04:37 +0100)]
ARM: 6745/1: kprobes insn decoding fix
Marcin Slusarz says:
> In arch/arm/kernel/kprobes-decode.c there's a function
> arm_kprobe_decode_insn which does:
>
> } else if ((insn & 0x0e000000) == 0x0c400000) {
> ...
>
> This is always false, so code below is dead.
> I found this bug by coccinelle (http://coccinelle.lip6.fr/).
Reported-by: Marcin Slusarz <marcin.slusarz@gmail.com> Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Russell King [Sun, 20 Feb 2011 12:16:45 +0000 (12:16 +0000)]
ARM: tlb: delay page freeing for SMP and ARMv7 CPUs
We need to delay freeing any mapped page on SMP and ARMv7 systems to
ensure that the data is not accessed by other CPUs, or is used for
speculative prefetch with ARMv7. This includes not only mapped pages
but also pages used for the page tables themselves.
This avoids races with the MMU/other CPUs accessing pages after they've
been freed but before we've invalidated the TLB.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Russell King [Mon, 21 Feb 2011 10:13:36 +0000 (10:13 +0000)]
ARM: Keep exit text/data around for SMP_ON_UP
When SMP_ON_UP is used and the spinlocks are inlined, we end up with
inline spinlocks in the exit code, with references from the SMP
alternatives section to the exit sections. This causes link time
errors. Avoid this by placing the exit sections in the init-discarded
region.
Cc: <stable@kernel.org> Tested-by: Dave Martin <dave.martin@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Russell King [Sun, 20 Feb 2011 12:22:52 +0000 (12:22 +0000)]
ARM: Ensure predictable endian state on signal handler entry
Ensure a predictable endian state when entering signal handlers. This
avoids programs which use SETEND to momentarily switch their endian
state from having their signal handlers entered with an unpredictable
endian state.
Cc: <stable@kernel.org> Acked-by: Dave Martin <dave.martin@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Pawel Moll [Wed, 16 Feb 2011 17:54:01 +0000 (18:54 +0100)]
ARM: 6740/1: Place correctly notes section in the linker script
Commit 18991197b4b588255ccabf472ebc84db7b66a19c added --build-id
linker option when toolchain supports it. ARM one does, but for some
reason places the section at 0 when linker script doesn't mention it
explicitly.
The 1e621a8e3752367d4aae78a8ab00a18fb2793f34 worked around the problem
removing this section from binary image with explicit objcopy options,
but it still exists in vmlinux, confusing tools like debuggers and perf.
This problem was discussed here:
http://lists.infradead.org/pipermail/linux-arm-kernel/2010-May/015994.html
http://lists.infradead.org/pipermail/linux-arm-kernel/2010-May/015994.html
but the proposed changes to the linker script were substantial.
This patch simply places NOTES (36 bytes long, at least when compiled
with CodeSourcery toolchain) between data and bss, which seem to be
the right place (and suggested by the sample linker script in
include/asm-generic/vmlinux.lds.h).
It is enough to place it correctly in vmlinux (so debuggers are happy):
viresh kumar [Wed, 16 Feb 2011 06:40:41 +0000 (07:40 +0100)]
ARM: 6700/1: SPEAr: Correct SOC config base address for spear320
SPEAR320_SOC_CONFIG_BASE was wrong, causing the wrong registers to be
accessed.
Reviewed-by: Stanley Miao <stanley.miao@windriver.com> Signed-off-by: Viresh Kumar <viresh.kumar@st.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Shiraz Hashim [Wed, 16 Feb 2011 06:40:29 +0000 (07:40 +0100)]
ARM: 6722/1: SPEAr: sp810: switch to slow mode before reset
In sysctl_soft_reset(), switch to slow mode before resetting the system
via the system controller. This is required.
Reviewed-by: Stanley Miao <stanley.miao@windriver.com> Signed-off-by: Shiraz Hashim <shiraz.hashim@st.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
viresh kumar [Wed, 16 Feb 2011 06:41:06 +0000 (07:41 +0100)]
ARM: 6712/1: SPEAr: replace readl(), writel() with relaxed versions in uncompress.h
readl() and writel() calls the outer cache maintainance operations
which are not available during Linux uncompression. This patch replaces
readl() and writel() with readl_relaxed() and writel_relaxed() to avoid
the link time errors.
Reviewed-by: Stanley Miao <stanley.miao@windriver.com> Signed-off-by: Viresh Kumar <viresh.kumar@st.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
viresh kumar [Wed, 16 Feb 2011 06:40:27 +0000 (07:40 +0100)]
ARM: 6720/1: SPEAr: Append UL to VMALLOC_END
This patch fixes following warning:
arch/arm/mm/init.c:606: warning: format '%08lx' expects type 'long unsigned int', but argument 12 has type 'unsigned int'
by appending UL to VMALLOC_END's Number.
Reviewed-by: Stanley Miao <stanley.miao@windriver.com> Signed-off-by: Viresh Kumar <viresh.kumar@st.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Michal Marek [Thu, 17 Feb 2011 14:13:54 +0000 (15:13 +0100)]
fixdep: Do not record dependency on the source file itself
The dependency is already expressed by the Makefiles, storing it in the
.cmd file breaks build if a .c file is replaced by .S or vice versa,
because the .cmd file contains
foo/bar.o: foo/bar.c ...
foo/bar.c ... :
so the foo/bar.c -> foo/bar.o rule triggers even if there is no
foo/bar.c anymore.
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Michal Marek <mmarek@suse.cz>
Linus Torvalds [Sun, 20 Feb 2011 18:15:57 +0000 (10:15 -0800)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
ALSA: HDA: Do not announce false surround in Conexant auto
ALSA: HDA: Conexant auto: Handle multiple connections to ADC node
ALSA: HDA: Add position_fix quirk for an Asus device
ALSA: caiaq - Fix possible string-buffer overflow
ALSA: au88x0 - Modify pointer callback to give accurate playback position
Linus Torvalds [Sun, 20 Feb 2011 18:15:22 +0000 (10:15 -0800)]
Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/staging
* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/staging:
hwmon: (lm85) extend to support EMC6D103 chips
MAINTAINERS: Remove stale hwmon quilt tree
hwmon: (k10temp) add support for AMD Family 12h/14h CPUs
hwmon: (jc42) do not allow writing to locked registers
hwmon: (jc42) more helpful documentation
hwmon: (jc42) fix type mismatch
It has caused hibernate regressions, for example Juri Sladby's report:
"I'm unable to hibernate 2.6.37.1 unless I rmmod tpm_tis:
[10974.074587] Suspending console(s) (use no_console_suspend to debug)
[10974.103073] tpm_tis 00:0c: Operation Timed out
[10974.103089] legacy_suspend(): pnp_bus_suspend+0x0/0xa0 returns -62
[10974.103095] PM: Device 00:0c failed to freeze: error -62"
and Rafael points out that some of the new conditionals in that commit
seem to make no sense. This commit needs more work and testing, let's
revert it for now.
Reported-by: Norbert Preining <preining@logic.at> Reported-and-requested-by: Jiri Slaby <jirislaby@gmail.com> Cc: Stefan Berger <stefanb@linux.vnet.ibm.com> Cc: Guillaume Chazarain <guichaz@gmail.com> Cc: Rajiv Andrade <srajiv@linux.vnet.ibm.com> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Yehuda Sadeh [Tue, 18 Jan 2011 21:37:28 +0000 (13:37 -0800)]
ceph: keep reference to parent inode on ceph_dentry
When creating a new dentry we now hold a reference to the parent
inode in the ceph_dentry. This is required due to the new RCU
changes from 949854d0, which set dentry->d_parent to NULL in d_kill before
calling the ->release() callback. If/when that behavior is changed, we can
revert this hack.
Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net> Signed-off-by: Sage Weil <sage@newdream.net>
ALSA: HDA: Conexant auto: Handle multiple connections to ADC node
Conexant 20641 has several inputs to its ADC node, with one selector
and individual amps for all inputs. This patch adds support in the
Conexant auto parser to handle that case.
It also means that the pin node's volume is being renamed to "Boost"
to avoid name clash with the new volume controls on the ADC node.
BugLink: http://bugs.launchpad.net/bugs/719524 Signed-off-by: David Henningsson <david.henningsson@canonical.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Thomas Gleixner [Tue, 15 Feb 2011 09:33:57 +0000 (10:33 +0100)]
genirq; Add fasteoi irq_chip quirk
Some chips want irq_eoi() only called when an interrupt is actually
handled. So they have checks for INPROGRESS and DISABLED in their
irq_eoi callbacks. Add a chip flag, which allows to handle that in the
generic code. No impact on the fastpath.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Thomas Gleixner [Thu, 10 Feb 2011 14:14:20 +0000 (15:14 +0100)]
genirq: Add preflow handler support
sparc64 needs to call a preflow handler on certain interrupts befor
calling the action chain. Integrate it into handle_fasteoi_irq. Must
be enabled via CONFIG_IRQ_FASTEOI_PREFLOW. No impact when disabled.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: David S. Miller <davem@davemloft.net>
Most of the managing functions get the irq descriptor and lock it -
either with or without buslock. Instead of open coding this over and
over provide a common function to do that.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Thomas Gleixner [Thu, 10 Feb 2011 21:01:25 +0000 (22:01 +0100)]
genirq: Remove desc->status when GENERIC_HARDIRQS_NO_COMPAT=y
If everything uses the right accessors, then enabling
GENERIC_HARDIRQS_NO_COMPAT should just work. If not it will tell you.
Don't be lazy and use the trick which I use in the core code!
git grep status_use_accessors
will unearth it in a split second. Offenders are tracked down and not
slapped with stinking trouts. This time we use frozen shark for a
better educational value.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Thomas Gleixner [Thu, 10 Feb 2011 12:16:14 +0000 (13:16 +0100)]
genirq: Add IRQCHIP_SET_TYPE_MASKED flag
irq_chips, which require to mask the chip before changing the trigger
type should set this flag. So the core takes care of it and the
requirement for looking into desc->status in the chip goes away.
Thomas Gleixner [Thu, 10 Feb 2011 12:08:38 +0000 (13:08 +0100)]
genirq: Add flags to irq_chip
Looking through irq_chip implementations I noticed that some of them
have special requirements, like setting the type masked and therefor
fiddle in irq_desc->status. Add a flag field, so the core code can
handle it.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Thomas Gleixner [Tue, 8 Feb 2011 16:28:12 +0000 (17:28 +0100)]
genirq: Mirror irq trigger type bits in irq_data.state
That's the data structure chip functions get provided. Also allow them
to signal the core code that they updated the flags in irq_data.state
by returning IRQ_SET_MASK_OK_NOCOPY. The default is unchanged.
The type bits should be accessed via:
val = irqd_get_trigger_type(irqdata);
and
irqd_set_trigger_type(irqdata, val);
Coders who access them directly will be tracked down and slapped with
stinking trouts.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Thomas Gleixner [Tue, 8 Feb 2011 15:50:00 +0000 (16:50 +0100)]
genirq: Make CHECK_IRQ_PER_CPU an inline and deprecate it
Its' too ugly and needs to go. The only users are core code and
parisc. Core code does not need it and parisc gets a new check once
IRQ_PER_CPU is reflected in irq_data.state.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
projects / karo-tx-linux.git / log