| Commit message (Collapse) | Author | Age | Files | Lines |
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Noticing the following might_sleep warning (dump_stack()) during kdump
testing when CONFIG_DEBUG_SPINLOCK_SLEEP is enabled. All secondary CPUs
will be calling rtas_set_indicator with interrupts disabled to remove
them from global interrupt queue.
BUG: sleeping function called from invalid context at
arch/powerpc/kernel/rtas.c:463
in_atomic():1, irqs_disabled():1
Call Trace:
[C00000000FFFB970] [C000000000010234] .show_stack+0x68/0x1b0 (unreliable)
[C00000000FFFBA10] [C000000000059354] .__might_sleep+0xd8/0xf4
[C00000000FFFBA90] [C00000000001D1BC] .rtas_busy_delay+0x20/0x5c
[C00000000FFFBB20] [C00000000001D8A8] .rtas_set_indicator+0x6c/0xcc
[C00000000FFFBBC0] [C000000000048BF4] .xics_teardown_cpu+0x118/0x134
[C00000000FFFBC40] [C00000000004539C]
.pseries_kexec_cpu_down_xics+0x74/0x8c
[C00000000FFFBCC0] [C00000000002DF08] .crash_ipi_callback+0x15c/0x188
[C00000000FFFBD50] [C0000000000296EC] .smp_message_recv+0x84/0xdc
[C00000000FFFBDC0] [C000000000048E08] .xics_ipi_dispatch+0xf0/0x130
[C00000000FFFBE50] [C00000000009EF10] .handle_IRQ_event+0x7c/0xf8
[C00000000FFFBF00] [C0000000000A0A14] .handle_percpu_irq+0x90/0x10c
[C00000000FFFBF90] [C00000000002659C] .call_handle_irq+0x1c/0x2c
[C00000000058B9C0] [C00000000000CA10] .do_IRQ+0xf4/0x1a4
[C00000000058BA50] [C0000000000044EC] hardware_interrupt_entry+0xc/0x10
--- Exception: 501 at .plpar_hcall_norets+0x14/0x1c
LR = .pseries_dedicated_idle_sleep+0x190/0x1d4
[C00000000058BD40] [C00000000058BDE0] 0xc00000000058bde0 (unreliable)
[C00000000058BDF0] [C00000000001270C] .cpu_idle+0x10c/0x1e0
[C00000000058BE70] [C000000000009274] .rest_init+0x44/0x5c
To fix this issue, rtas_set_indicator_fast() is added so that will not
wait for RTAS 'busy' delay and this new function is used for kdump (in
xics_teardown_cpu()) and for CPU hotplug ( xics_migrate_irqs_away() and
xics_setup_cpu()).
Note that the platform architecture spec says that set-indicator
on the indicator we're using here is not permitted to return the
busy or extended busy status codes.
Signed-off-by: Haren Myneni <haren@us.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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We should not be calling power4_enable_pmcs() in
pseries_lpar_enable_pmcs(); just doing the hypercall is sufficient.
Prior to 2.6.15 we did not call power4_enable_pmcs() for an lpar.
power4_enable_pmcs() tries to read the hid0 register which is no
longer legal for an lpar in newer Power processors.
Signed-off-by: Paul Mackerras <paulus@samba.org>
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master.kernel.org:/pub/scm/linux/kernel/git/dtor/input
* 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/dtor/input: (24 commits)
Input: ati_remote - use msec instead of jiffies
Input: ati_remote - add missing input_sync()
Input: ati_remote - relax permissions sysfs module parameters
Input: ati_remote - make filter time a module parameter
Input: atkbd - restore repeat rate when resuming
Input: trackpoint - activate protocol when resuming
Input: logips2pp - fix button mapping for MX300
Input: keyboard - change to use kzalloc
Input: serio/gameport - check whether driver core calls succeeded
Input: spaceball - make 4000FLX Lefty work
Input: keyboard - simplify emulate_raw() implementation
Input: keyboard - remove static variable and clean up initialization
Input: hiddev - use standard list implementation
Input: add missing handler->start() call
Input: HID - fix potential out-of-bound array access
Input: fix list iteration in input_release_device()
Input: iforce - add Trust Force Feedback Race Master support
Input: iforce - check array bounds before accessing elements
Input: libps2 - warn instead of oopsing when passed bad arguments
Input: fm801-gp - fix use after free
...
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By using milliseconds instead of jiffies to calculate acceleration
factor we make the code immune to changes in HZ.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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When emulating button toggle drivers need to send input_sync()
between 'down' and 'up' events, otherwise some users might miss
keypress because device's state is only considered finalized
after EV_SYN/SYN_REPORT is received.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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Allow changing debug and channel_mask parameters on the fly.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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Make the AT keyboard driver restore previously set repeat rate
when resuming. Noticed by Linus Torvalds.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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Trackpoint driver was not sending the magic knock sequence upon resume
causing incorrect device behavior after resuming from disk.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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MX300 does not have an EXTRA_BTN - it is a simple wheel mouse with
an additional task-switcher button, which is reported as side button
(and not task button).
Signed-off-by: Daniel Drake <dsd@gentoo.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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into for-linus
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Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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Although the Spaceball 4000FLX Lefty is already supported by the
spaceball driver, it does not register properly due to SPACEBALL_MAX_ID
being set too low. Increment SPACEBALL_MAX_ID such that the 4000FLX Lefty
is properly recognized.
Signed-off-by: Nick Martin <nim+linux@nimlabs.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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Fixes Coverity #id 303
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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The start() method need to be called every time we create
a new handle. This includes not only registering new devices
but also when registering new handlers.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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Fixes Coverity #id 978
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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Signed-off-by: Vojtech Pavlik <vojtech@suse.cz>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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Fixes Coverity #id 864
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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This is more user-friendly and also fixes Coverity #id 249
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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Fixes Coverity #id 916
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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Create input_inject_event() function which is to be used by input
handlers as opposed to input_event() which is reserved for drivers
implementing input devices. The difference is that if device is
"grabbed" by some process input_inject_event() will ignore events
unless sent from the handle that is currently owns the device.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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The new start() method is called immediately after connect() and also
when "grabbed" device is released by its owner. This will allow input
handlers to re-synchronize state of once-grabbed device with the rest
of devices.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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This method used to enforce exclusive access to iforce devices,
but presenlty there are no known users of this method.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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* master.kernel.org:/pub/scm/linux/kernel/git/perex/alsa:
[ALSA] Don't reject O_RDWR at opening PCM OSS with read/write-only device
[ALSA] snd-emu10k1: Implement support for Audigy 2 ZS [SB0353]
[ALSA] add MAINTAINERS entry for snd-aoa
[ALSA] aoa: platform function gpio: ignore errors from functions that don't exist
[ALSA] make snd-powermac load even when it can't bind the device
[ALSA] aoa: fix toonie codec
[ALSA] aoa: feature gpio layer: fix IRQ access
[ALSA] Conversions from kmalloc+memset to k(z|c)alloc
[ALSA] snd-emu10k1: Fixes ALSA bug#2190
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Accept O_RDWR at opening a PCM OSS device that is read- or write-only,
just for the compatibility with the behavior of older versions.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
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Fixes ALSA bug#1365.
Signed-off-by: James Courtier-Dutton <James@superbug.co.uk>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
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This adds me into the MAINTAINERS file for the AOA driver.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
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exist
Sometimes we simply want to turn off or on everything, and when recently a
warning was added when a certain platform function can't be called, this
triggered all the time in those cases. This patch shows the warning only if
the error was different from the function not existing.
The alternative would be to not even try calling the function when it
doesn't exist by first checking which exist and then only calling those that
do, but that adds complexity that isn't necessary.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
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This patch makes snd-powermac load when it can't bind the device right
away. That's the expected behaviour for hotplugging, but fixes an
important problem I was seeing with doing a modprobe snd-powermac with
a version that refuses loading on machines with layout-id: snd-powermac
would create a bunch of uevents and then refuse to load, the uevents
causing udev to reload it again, ad eternum.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
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This patch fixes the toonie codec to be actually usable.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
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The IRQ rework caused some hiccups here, in some cases we call
get_irq without a device node. This patch makes it catch that
case and return NO_IRQ when it happens, along with changing the
place where the irq is checked to check for NO_IRQ instead of -1.
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
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sound: Conversions from kmalloc+memset to k(c|z)alloc.
Signed-off-by: Panagiotis Issaris <takis@issaris.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
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Fixes ALSA bug#2190 System hangs on unplugging Audigy 2 ZS
Notebook CardBus card.
Signed-off-by: James Courtier-Dutton <James@superbug.co.uk>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
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* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6:
[LAPB]: Fix windowsize check
[TCP]: Fixes IW > 2 cases when TCP is application limited
[PKT_SCHED] RED: Fix overflow in calculation of queue average
[LLX]: SOCK_DGRAM interface fixes
[PKT_SCHED]: Return ENOENT if qdisc module is unavailable
[BRIDGE]: netlink status fix
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In bug #6954, Norbert Reinartz reported the following issue:
"Function lapb_setparms() in file net/lapb/lapb_iface.c checks if the given
parameters are valid. If the given window size is in the range of 8 .. 127,
lapb_setparms() fails and returns an error value of LAPB_INVALUE, even if bit
LAPB_EXTENDED in parms->mode is set.
If bit LAPB_EXTENDED in parms->mode is set and the window size is in the range
of 8 .. 127, the first check "(parms->mode & LAPB_EXTENDED)" results true and
the second check "(parms->window < 1 || parms->window > 127)" results false.
Both checks in conjunction result to false, thus the third check "(parms->window
< 1 || parms->window > 7)" is done by fault.
This third check results true, so that we leave lapb_setparms() by 'goto out_put'.
Seems that this bug doesn't cause any problems, because lapb_setparms() isn't
used to change the default values of LAPB. We are using kernel lapb in our
software project and also change the default parameters of lapb, so we found
this bug"
He also pasted a fix, that I've transformated into a patch:
Signed-off-by: Diego Calleja <diegocg@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Whenever a transfer is application limited, we are allowed at least
initial window worth of data per window unless cwnd is previously
less than that.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Overflow can occur very easily with 32 bits, e.g., with 1 second
us_idle is approx. 2^20, which leaves only 11-Wlog bits for queue
length. Since the EWMA exponent is typically around 9, queue
lengths larger than 2^2 cause overflow. Whether the affected
branch is taken when us_idle is as high as 1 second, depends on
Scell_log, but with rather reasonable configuration Scell_log is
large enough to cause p->Stab to have zero index, which always
results zero shift (typically also few other small indices result
in zero shift).
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The datagram interface of LLC is broken in a couple of ways.
These were discovered when trying to use it to build an out-of-kernel
version of STP.
First it didn't pass the source address of the received packet
in recvfrom(). It needs to copy the source address of received LLC packets
into the socket control block. At the same time fix a security issue
because there was uninitialized data leakage. Every recvfrom call
was just copying out old data.
Second, LLC should not merge multiple packets in one receive call
on datagram sockets. LLC should preserve packet boundaries on
SOCK_DGRAM.
This fix goes against the old historical comments about UNIX98 semantics
but without this fix SOCK_DGRAM is broken and useless. So either ANK's
interpretation was incorect or UNIX98 standard was wrong.
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Acked-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Return ENOENT if qdisc module is unavailable
Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Fix code that passes back netlink status messages about
bridge changes. Submitted by Aji_Srinivas@emc.com
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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While busy-waiting for completion, check the hardware after scheduling;
don't schedule and then immediately check the _timeout_. If the yield()
took a long time (as it does on my OLPC prototype board when it's busy),
we'd report a timeout even though the hardware was now ready.
This fixes it, and also switches the yield() for a cond_resched() because
we don't actually want to be _that_ nice about it. I see nice
tightly-packed SMBus transactions now, rather than waiting for milliseconds
between successive phases.
Actually, we shouldn't be busy-waiting here at all. We should be using
interrupts. That's an exercise for another day though.
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Cc: Christer Weinigel <wingel@nano-system.com>
Cc: <Jordan.Crouse@amd.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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I saw an oops down this path when trying to create a new file on a UDF
filesystem which was internally marked as readonly, but mounted rw:
udf_create
udf_new_inode
new_inode
alloc_inode
udf_alloc_inode
udf_new_block
returns EIO due to readonlyness
iput (on error)
udf_put_inode
udf_discard_prealloc
udf_next_aext
udf_current_aext
udf_get_fileshortad
OOPS
the udf_discard_prealloc() path was examining uninitialized fields of the
udf inode.
udf_discard_prealloc() already has this code to short-circuit the discard
path if no extents are preallocated:
if (UDF_I_ALLOCTYPE(inode) == ICBTAG_FLAG_AD_IN_ICB ||
inode->i_size == UDF_I_LENEXTENTS(inode))
{
return;
}
so if we initialize UDF_I_LENEXTENTS(inode) = 0 earlier in udf_new_inode,
we won't try to free the (not) preallocated blocks, since this will match
the i_size = 0 set when the inode was initialized.
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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The recent fixups in futex.c need to be applied to futex_compat.c too. Fixes
a hang reported by Olaf.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Olaf Hering <olh@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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