This patch fixes a buffer overrun bug in
tracepoint_id_to_path(). The bug manisfested itself as a memory
error reported by perf record. I ran into it with perf sched:
$ perf sched rec noploop 2 noploop for 2 seconds
[ perf record: Woken up 14 times to write data ]
[ perf record: Captured and wrote 42.701 MB perf.data (~1865622 samples) ]
Fatal: No memory to alloc tracepoints list
It turned out that tracepoint_id_to_path() was reading the
tracepoint id using read() but the buffer was not large enough
to include the \n terminator for id with 4 digits or more.
The patch fixes the problem by extending the buffer to a more
reasonable size covering all possible id length include \n
terminator. Note that atoll() stops at the first non digit
character, thus it is not necessary to clear the buffer between
each read.
Signed-off-by: Stephane Eranian <eranian@google.com>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: fweisbec@gmail.com
Cc: dsahern@gmail.com
Link: http://lkml.kernel.org/r/20120313155102.GA6465@quad
Signed-off-by: Ingo Molnar <mingo@elte.hu>
When a machine boots up, the TSC generally gets reset. However,
when kexec is used to boot into a kernel, the TSC value would be
carried over from the previous kernel. The computation of
cycns_offset in set_cyc2ns_scale is prone to an overflow, if the
machine has been up more than 208 days prior to the kexec. The
overflow happens when we multiply *scale, even though there is
enough room to store the final answer.
We fix this issue by decomposing tsc_now into the quotient and
remainder of division by CYC2NS_SCALE_FACTOR and then performing
the multiplication separately on the two components.
Refactor code to share the calculation with the previous
fix in __cycles_2_ns().
Signed-off-by: Salman Qazi <sqazi@google.com>
Acked-by: John Stultz <john.stultz@linaro.org>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Turner <pjt@google.com>
Cc: john stultz <johnstul@us.ibm.com>
Link: http://lkml.kernel.org/r/20120310004027.19291.88460.stgit@dungbeetle.mtv.corp.google.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Currently pcpu_devices->panic_stack is passed to pcpu_delegate() in
smp_call_ipl_cpu(). This is wrong because pcpu_delegate() expects
the bottom (high address) of the stack and pcpu_devices->panic_stack
points to the top (low address). We now pass the bottom of the stack
which is pcpu_devices->panic_stack + PAGE_SIZE.
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Commit 7504a3e1 ("ath6kl: add padding to firmware log records") accidentally
changed debug.c mode from 100644 to 100755. Revert that back to original.
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
ath6kl/cfg80211.c:589: WARNING: max() should probably be
max_t(u16, vif->listen_intvl_t, ATH6KL_MAX_WOW_LISTEN_INTL)
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
My patch 24fc32b3 ("ath6kl: add ath6kl_bmi_write_hi32()") caused a regression
in ath6kl_upload_board_file() and the board_address variable was not
properly initialised in some cases:
ath6kl/init.c:1068:6: warning: ‘board_address’ may be used uninitialized
in this function
Most likely this broke ar6004 support but I can't test that right now.
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Add description of pwm[1-4]_start_output, pwm[1-4]_step_output,
pwm[1-4]_stop_output, and pwm[1-4]_max_output attributes to driver
documentation.
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
Properly set the source of temp2 for the W83627UHG. Also fix a
comment right before that, and document the W83627UHG as reporting up
to 3 temperatures.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Guenter Roeck <guenter.roeck@ericsson.com>
Cc: stable@vger.kernel.org
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
* 'drm-nouveau-next' of git://anongit.freedesktop.org/git/nouveau/linux-2.6: (57 commits)
drm/nouveau: map first page of mmio early and determine chipset earlier
drm/nvd0/disp: disconnect encoders before reprogramming them
drm/nvd0/disp: move syncs/magic setup to or mode_set
drm/nouveau/dp: account for channel coding overhead in link training
drm/nvd0/disp: fix dcb sor link matching in supervisor handler
drm/nvd0/disp: initial implementation of displayport
drm/nouveau/dp: make dp dpms function common, call from sor code instead
drm/nv50/hwsq: some nv92 fixes
drm/nouveau/dp: move all nv50/sor-specific code out of nouveau_dp.c
drm/nouveau/dp: make functions for executing various bios tables
drm/nouveau/pm: fix oops if chipset has no pm support at all
drm/nouveau/bios: rework vbios shadowing
drm/nouveau/bios: attempt acpi rom fetch before pcirom
drm/nvd0/disp: attempt to handle more than 2 crtcs if possible
drm/nvc0/vram: get part count from PUNITS
drm/nv40/pm: fix fanspeed regression
drm/nouveau/pm: several fixes for nvc0 memory timings
drm/nvc0/pm: restrict pll mode to clocks that can actually use it
drm/nouveau/dp: fix bad comparison in dp_link_train_commit()
drm/nouveau/mxm: call mxmi to determine revision before calling mxms
...
Add support for BT-driven configuration of the TiVo remote.
Reported-by: Joshua Dillon <jvdillon@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
NVIDIA appear to do these around the same place they do the MODE_CTRL
methods, and for DP at least we need to bash some extra bits in "syncs"
to keep EVO happy.
It's a bit of a guess as to the 6/8bpc, but i have no better idea yet.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
The shift from hwsq_data = 0x1400 to 0x080000 actually happened in nv94, not nv92
This fixes some reclocking issues on my newly acquired nv92
Signed-off-by: Martin Peres <martin.peres@labri.fr>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Off-chip encoders (which we don't support yet anyway), and newer chipsets
(such as NVD9...), will need their own code for this.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
More code to do the same thing, but will make it easier to handle various
changes that could possibly happen the the VBIOS tables.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Refactored to allow shadowing of VBIOS images longer than 64KiB, which
allows us to pass the VBIOS checksum test on certain boards.
There's also a workaround for reading the PROM VBIOS on some chipsets.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
There's cards out there with completely messed up PCIROM images that have
a perfectly valid signature.. Sigh!
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Theoretically handles CRTC2/CRTC3, should any GF119 out there actually
have them enabled. The room is there for the regs etc, so why not :)
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This patch fixes two small issues in timing generation as spotted on
several NVCx cards.
In addition, the header of the file is updated to also contain (some of)
the current developers of this code.
Signed-off-by: Roy Spliet <r.spliet@student.tudelft.nl>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
The comparison (lpre == DP_TRAIN_PRE_EMPHASIS_9_5) is always false:
lpre is initialized as (lane & 0x0c) >> 2, which is at most 3, while
DP_TRAIN_PRE_EMPHASIS_9_5 is defined as (3 << 3).
Signed-off-by: Xi Wang <xi.wang@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
There's a HP laptop out there where the MXM version in the VBIOS doesn't
match what the ACPI implementation is expecting. These tables will accept
0x00 to MXMS to return latest version, but *only* if MXMI has been called
first..
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This patch fixes an oops cause by pm_trigger accessing the (uninitialised)
crtc list.
Reported-by: Roy Spliet <r.spliet@student.tudelft.nl>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
v2 (Emil Velikov <emil.l.velikov@gmail.com>):
- Fixed a regression on certain nv50 IGP due to not passing the correct
target type to nv50_vm_addr()
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Tested-by: Johannes Obermayr <johannesobermayr@gmx.de>
Fixed a trailing white space error detected
in sound/core/control.c by checkpatch.pl script.
Signed-off-by: Jeffrin Jose <ahiliation@yahoo.co.in>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Goes a long way to correcting NVS295 memory reclocking issues.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Martin Peres <martin.peres@labri.fr>
There's some "extended" GDDR3 chipsets out there with EMRS2 settings that
change the layout of MRS/EMRS1 bitmaps.. Sigh.. Still need to track down
how exactly we're supposed to handle this.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Martin Peres <martin.peres@labri.fr>
Idea from Martin Peres, different implementation by me.
v2: Martin Peres:
- fix mast calculation
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Martin Peres <martin.peres@labri.fr>
