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2011-04-29usbnet: Transfer of maintainershipOliver Neukum1-1/+1
Somebody has to do it, however unfortunate be the cause. Signed-off-by: Oliver Neukum <oneukum@suse.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-04-29usbnet: add support for some Huawei modems with cdc-ether portsDan Williams1-2/+12
Some newer Huawei devices (T-Mobile Rocket, others) have cdc-ether compatible ports, so recognize and expose them. Signed-off-by: Dan Williams <dcbw@redhat.com> Acked-by: Oliver Neukum <oneukum@suse.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-04-29bnx2: cancel timer on device removalNeil Horman1-0/+2
This oops was recently reported to me: invalid opcode: 0000 [#1] SMP last sysfs file: /sys/devices/pci0000:00/0000:00:01.0/0000:01:0d.0/0000:02:05.0/device CPU 1 Modules linked in: bnx2(+) sunrpc ipv6 dm_mirror dm_region_hash dm_log sg microcode serio_raw amd64_edac_mod edac_core edac_mce_amd k8temp i2c_piix4 shpchp ext4 mbcache jbd2 sd_mod crc_t10dif mptsas mptscsih mptbase scsi_transport_sas radeon ttm drm_kms_helper drm hwmon i2c_algo_bit i2c_core dm_mod [last unloaded: bnx2] Modules linked in: bnx2(+) sunrpc ipv6 dm_mirror dm_region_hash dm_log sg microcode serio_raw amd64_edac_mod edac_core edac_mce_amd k8temp i2c_piix4 shpchp ext4 mbcache jbd2 sd_mod crc_t10dif mptsas mptscsih mptbase scsi_transport_sas radeon ttm drm_kms_helper drm hwmon i2c_algo_bit i2c_core dm_mod [last unloaded: bnx2] Pid: 23900, comm: pidof Not tainted 2.6.32-130.el6.x86_64 #1 BladeCenter LS21 -[797251Z]- RIP: 0010:[<ffffffffa058b270>] [<ffffffffa058b270>] 0xffffffffa058b270 RSP: 0018:ffff880002083e48 EFLAGS: 00010246 RAX: ffff880002083e90 RBX: ffff88007ccd4000 RCX: 0000000000000000 RDX: 0000000000000100 RSI: dead000000200200 RDI: ffff8800007b8700 RBP: ffff880002083ed0 R08: ffff88000208db40 R09: 0000022d191d27c8 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8800007b9bc8 R13: ffff880002083e90 R14: ffff8800007b8700 R15: ffffffffa058b270 FS: 00007fbb3bcf7700(0000) GS:ffff880002080000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000001664a98 CR3: 0000000060395000 CR4: 00000000000006e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process pidof (pid: 23900, threadinfo ffff8800007e8000, task ffff8800091c0040) Stack: ffffffff81079f77 ffffffff8109e010 ffff88007ccd5c20 ffff88007ccd5820 <0> ffff88007ccd5420 ffff8800007e9fd8 ffff8800007e9fd8 0000010000000000 <0> ffff88007ccd5020 ffff880002083e90 ffff880002083e90 ffffffff8102a00d Call Trace: <IRQ> [<ffffffff81079f77>] ? run_timer_softirq+0x197/0x340 [<ffffffff8109e010>] ? tick_sched_timer+0x0/0xc0 [<ffffffff8102a00d>] ? lapic_next_event+0x1d/0x30 [<ffffffff8106f737>] __do_softirq+0xb7/0x1e0 [<ffffffff81092cc0>] ? hrtimer_interrupt+0x140/0x250 [<ffffffff81185f90>] ? filldir+0x0/0xe0 [<ffffffff8100c2cc>] call_softirq+0x1c/0x30 [<ffffffff8100df05>] do_softirq+0x65/0xa0 [<ffffffff8106f525>] irq_exit+0x85/0x90 [<ffffffff814e3340>] smp_apic_timer_interrupt+0x70/0x9b [<ffffffff8100bc93>] apic_timer_interrupt+0x13/0x20 <EOI> [<ffffffff81211ba5>] ? selinux_file_permission+0x45/0x150 [<ffffffff81262a75>] ? _atomic_dec_and_lock+0x55/0x80 [<ffffffff812050c6>] security_file_permission+0x16/0x20 [<ffffffff811861c1>] vfs_readdir+0x71/0xe0 [<ffffffff81186399>] sys_getdents+0x89/0xf0 [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b It occured during some stress testing, in which the reporter was repeatedly removing and modprobing the bnx2 module while doing various other random operations on the bnx2 registered net device. Noting that this error occured on a serdes based device, we noted that there were a few ethtool operations (most notably self_test and set_phys_id) that have execution paths that lead into bnx2_setup_serdes_phy. This function is notable because it executes a mod_timer call, which starts the bp->timer running. Currently bnx2 is setup to assume that this timer only nees to be stopped when bnx2_close or bnx2_suspend is called. Since the above ethtool operations are not gated on the net device having been opened however, that assumption is incorrect, and can lead to the timer still running after the module has been removed, leading to the oops above (as well as other simmilar oopses). Fix the problem by ensuring that the timer is stopped when pci_device_unregister is called. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Reported-by: Hushan Jia <hjia@redhat.com> CC: Michael Chan <mchan@broadcom.com> CC: "David S. Miller" <davem@davemloft.net> Acked-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-04-29iwl4965: fix "Received BA when not expected"Stanislaw Gruszka1-6/+12
Need to use broadcast sta_id for management frames, otherwise we broke BA session in the firmware and get messages like that: "Received BA when not expected" or (on older kernels): "BA scd_flow 0 does not match txq_id 10" This fix regression introduced in 2.6.35 during station management code rewrite by: commit 2a87c26bbe9587baeb9e56d3ce0b4971bd777643 Author: Johannes Berg <johannes.berg@intel.com> Date: Fri Apr 30 11:30:45 2010 -0700 iwlwifi: use iwl_find_station less Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-04-29iwlagn: fix "Received BA when not expected"Stanislaw Gruszka1-6/+11
Need to use broadcast sta_id for management frames, otherwise we broke BA session in the firmware and get messages like that: "Received BA when not expected" or (on older kernels): "BA scd_flow 0 does not match txq_id 10" This fix regression introduced in 2.6.35 during station management code rewrite by: commit 2a87c26bbe9587baeb9e56d3ce0b4971bd777643 Author: Johannes Berg <johannes.berg@intel.com> Date: Fri Apr 30 11:30:45 2010 -0700 iwlwifi: use iwl_find_station less Patch partially resolve: https://bugzilla.kernel.org/show_bug.cgi?id=16691 However, there are still 11n performance problems on 4965 and 5xxx devices that need to be investigated. Cc: stable@kernel.org # 2.6.35+ Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Acked-by: Johannes Berg <johannes@sipsolutions.net> Acked-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-04-29workqueue: fix deadlock in worker_maybe_bind_and_lock()Tejun Heo1-1/+7
If a rescuer and stop_machine() bringing down a CPU race with each other, they may deadlock on non-preemptive kernel. The CPU won't accept a new task, so the rescuer can't migrate to the target CPU, while stop_machine() can't proceed because the rescuer is holding one of the CPU retrying migration. GCWQ_DISASSOCIATED is never cleared and worker_maybe_bind_and_lock() retries indefinitely. This problem can be reproduced semi reliably while the system is entering suspend. http://thread.gmane.org/gmane.linux.kernel/1122051 A lot of kudos to Thilo-Alexander for reporting this tricky issue and painstaking testing. stable: This affects all kernels with cmwq, so all kernels since and including v2.6.36 need this fix. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Thilo-Alexander Ginkel <thilo@ginkel.com> Tested-by: Thilo-Alexander Ginkel <thilo@ginkel.com> Cc: stable@kernel.org
2011-04-29Merge branch 'omap-fixes-for-linus' of ↵Linus Torvalds12-18/+56
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: OMAP3+: voltage: remove initial voltage OMAP4: Intialize IVA Device in addition to DSP device. omap: rx51: mark reserved memory earlier OMAP3: l3: fix for "irq 10: nobody cared" message arm: omap2: enable smc instruction for sleep34xx OMAP2/3: hwmod: fix gpio-reset timeouts seen during bootup. OMAP3: PM: Do not rely on ROM code to restore CM_AUTOIDLE_PLL.AUTO_PERIPH_DPLL OMAP2+: PM: Fix the saving of CM_AUTOIDLE_PLL register on scratchpad area OMAP4: clock data: Change DSS clock aliases OMAP2+: hwmod data: Fix wrong dma_system end address
2011-04-29ARM: 6891/1: prevent heap corruption in OABI semtimedopDan Rosenberg1-1/+1
When CONFIG_OABI_COMPAT is set, the wrapper for semtimedop does not bound the nsops argument. A sufficiently large value will cause an integer overflow in allocation size, followed by copying too much data into the allocated buffer. Fix this by restricting nsops to SEMOPM. Untested. Cc: stable@kernel.org Signed-off-by: Dan Rosenberg <drosenberg@vsecurity.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-04-29hwmon: (lm85) Fix error paths in probe functionJean Delvare1-2/+2
We must remove all files we created, even in error cases. Fixes second part of kernel bug #34072: https://bugzilla.kernel.org/show_bug.cgi?id=34072 Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
2011-04-29hwmon: (lm85) Add missing list terminatorsJean Delvare1-0/+2
Fixes kernel bug #34072: https://bugzilla.kernel.org/show_bug.cgi?id=34072 Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
2011-04-29hwmon: (adm1021) Clarify documentation regarding Xeon processorsJean Delvare2-19/+20
Recent Xeon processor thermal sensors are supported by the coretemp driver and not the adm1021 driver. Only one old generation of Xeon processors (the first Netburst ones) are supported by the adm1021 driver. Reported-by: Darren Hart <dvhart@linux.intel.com> Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
2011-04-29hwmon: (lm90) Fix update interval information in driver documentationGuenter Roeck1-3/+3
The lm90 driver's attribute update interval is configurable. Reflect this information in the driver documentation. Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2011-04-29hwmon: (lm90) Add support for ADT7461A and NCT1008Guenter Roeck3-17/+36
This patch adds support for ADT7461A and NCT1008 to the lm90 driver. Both chips have identical functionality and report the same manufacturing ID and device ID values. Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2011-04-29ALSA: HDA: Fix automute for Gateway NV79David Henningsson1-0/+6
The PCI SSID is 1025:031c and the codec SSID is 1025:031d, so the driver mistakes this for a SKU value, but looking at the numbers, this is obviously wrong. Cc: stable@kernel.org (2.6.38+) BugLink: http://bugs.launchpad.net/bugs/761861 Signed-off-by: David Henningsson <david.henningsson@canonical.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-04-29Merge branch 'kprobes' of git://git.linaro.org/people/nico/linux into fixesRussell King3-321/+462
2011-04-29hrtimer: Initialize CLOCK_ID to HRTIMER_BASE table staticallyThomas Gleixner1-5/+5
Sedat and Bruno reported RCU stalls which turned out to be caused by the following; sched_init() calls init_rt_bandwidth() which calls hrtimer_init() _BEFORE_ hrtimers_init() is called. While not entirely correct this worked because hrtimer_init() only accessed statically initialized data (hrtimer_bases.clock_base[CLOCK_MONOTONIC]) Commit e06383db9 (hrtimers: extend hrtimer base code to handle more then 2 clockids) added an indirection to the hrtimer_bases.clock_base lookup to avoid gap handling in the hot path. The table which is used for the translataion from CLOCK_ID to HRTIMER_BASE index is initialized at runtime in hrtimers_init(). So the early call of the scheduler code translates CLOCK_MONOTONIC to HRTIMER_BASE_REALTIME. Thus the rt_bandwith timer ends up on CLOCK_REALTIME. If the timer is armed and the wall clock time is set (e.g. ntpdate in the early boot process - which also gives the problem deterministic behaviour i.e. magic recovery after N hours), then the timer ends up with an expiry time far into the future. That breaks the RT throttler mechanism as rt runtime is accumulated and never cleared, so the rt throttler detects a false cpu hog condition and blocks all RT tasks until the timer finally expires. That in turn stalls the RCU thread of TINYRCU which leads to an huge amount of RCU callbacks piling up. Make the translation table statically initialized, so we are back to the status of <= 2.6.39. Reported-and-tested-by: Sedat Dilek <sedat.dilek@gmail.com> Reported-by: Bruno Prémont <bonbons@linux-vserver.org> Cc: John stultz <johnstul@us.ibm.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/%3Calpine.LFD.2.02.1104282353140.3005%40ionos%3E Reviewed-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-04-29[S390] irqstats: fix counting of pfault, dasd diag and virtio irqsHeiko Carstens3-3/+3
pfault, dasd diag and virtio all use the same external interrupt number. The respective interrupt handlers decide by the subcode if they are meant to handle the interrupt. Counting is currently done before looking at the subcode which means each handler counts an interrupt even if it is not handling it. Fix this by moving the kstat code after the code which looks at the subcode. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-04-29ALSA: hda: add beep quirk for Realtek 0x1043:831aDaniel Cordero1-0/+1
PC Beep was not being reported as enabled on my EeePC 901: SKU: enable_pcbeep=0x0 Signed-off-by: Daniel Cordero <danielcordero@lavabit.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-04-28ARM: kprobes: Tidy-up kprobes-decode.cJon Medhurst1-108/+23
- Remove coding standard violations reported by checkpatch.pl - Delete comment about handling of conditional branches which is no longer true. - Delete comment at end of file which lists all ARM instructions. This duplicates data available in the ARM ARM and seems like an unnecessary maintenance burden to keep this up to date and accurate. Signed-off-by: Jon Medhurst <tixy@yxit.co.uk> Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
2011-04-28ARM: kprobes: Add emulation of hint instructions like NOP and WFIJon Medhurst1-0/+24
Being able to probe NOP instructions is useful for hard-coding probeable locations and is used by the kprobes test code. Signed-off-by: Jon Medhurst <tixy@yxit.co.uk> Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
2011-04-28ARM: kprobes: Add emulation of SBFX, UBFX, BFI and BFC instructionsJon Medhurst1-0/+42
These bit field manipulation instructions occur several thousand times in an ARMv7 kernel. Signed-off-by: Jon Medhurst <tixy@yxit.co.uk> Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
2011-04-28ARM: kprobes: Add emulation of MOVW and MOVT instructionsJon Medhurst1-2/+28
The MOVW and MOVT instructions account for approximately 7% of all instructions in a ARMv7 kernel as GCC uses them instead of a literal pool. Signed-off-by: Jon Medhurst <tixy@yxit.co.uk> Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
2011-04-28ARM: kprobes: Reject probing of undefined data processing instructionsJon Medhurst1-14/+17
The instruction decoding in space_cccc_000x needs to reject probing of instructions with undefined patterns as they may in future become defined and then emulated faultily - as has already happened with the SMC instruction. This fix is achieved by testing for the instruction patterns we want to probe and making the the default fall-through paths reject probes. This also allows us to remove some explicit tests for instructions that we wish to reject, as that is now the default action. Signed-off-by: Jon Medhurst <tixy@yxit.co.uk> Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
2011-04-28ARM: kprobes: Remove redundant code in space_1111Jon Medhurst1-9/+5
The tests to explicitly reject probing CPS, RFE and SRS instructions are redundant as the default case is now to reject undecoded patterns. Signed-off-by: Jon Medhurst <tixy@yxit.co.uk> Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
2011-04-28ARM: kprobes: Fix emulation of PLD instructionsJon Medhurst1-13/+8
The PLD instructions wasn't being decoded correctly and the emulation code wasn't adjusting PC correctly. As the PLD instruction is only a performance hint we emulate it as a simple nop, and we can broaden the instruction decoding to take into account newer PLI and PLDW instructions. Signed-off-by: Jon Medhurst <tixy@yxit.co.uk> Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
2011-04-28ARM: kprobes: Reject probing of SETEND instructionsJon Medhurst1-5/+0
The emulation of SETEND was broken as it changed the endianess for the running kprobes handling code. Rather than adding a new simulation routine to fix this we'll just reject probing of SETEND as these should be very rare in the kernel. Note, the function emulate_none is now unused but it is left in the source code as future patches will use it. Signed-off-by: Jon Medhurst <tixy@yxit.co.uk> Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
2011-04-28ARM: kprobes: Consolidate stub decoding functionsJon Medhurst1-31/+9
Following the change to remove support for coprocessor instructions we are left with three stub functions which can be consolidated. Signed-off-by: Jon Medhurst <tixy@yxit.co.uk> Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
2011-04-28ARM: kprobes: Reject probing of all coprocessor instructionsJon Medhurst1-102/+11
The kernel doesn't currently support VFP or Neon code, and probing of code with CP15 operations is fraught with bad consequences. Therefore we don't need the ability to probe coprocessor instructions and the code to support this can be removed. The removed code also had at least two bugs: - MRC into R15 should set CPSR not trash PC - LDC and STC which use PC as base register needed the address offset by 8 Signed-off-by: Jon Medhurst <tixy@yxit.co.uk> Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
2011-04-28ARM: kprobes: Fix emulation of USAD8 instructionsJon Medhurst1-6/+4
The USAD8 instruction wasn't being explicitly decoded leading to the incorrect emulation routine being called. It can be correctly decoded in the same way as the signed multiply instructions so we move the decoding there. Signed-off-by: Jon Medhurst <tixy@yxit.co.uk> Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
2011-04-28ARM: kprobes: Fix emulation of SMUAD, SMUSD and SMMUL instructionsJon Medhurst1-7/+15
The signed multiply instructions were being decoded incorrectly. Signed-off-by: Jon Medhurst <tixy@yxit.co.uk> Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
2011-04-28ARM: kprobes: Fix emulation of SXTB16, SXTB, SXTH, UXTB16, UXTB and UXTH ↵Jon Medhurst1-2/+12
instructions These sign extension instructions are encoded as extend-and-add instructions where the register to add is specified as r15. The decoding routines weren't checking for this and were using the incorrect emulation code, giving incorrect results. Signed-off-by: Jon Medhurst <tixy@yxit.co.uk> Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
2011-04-28ARM: kprobes: Reject probing of undefined media instructionsJon Medhurst1-1/+35
The instructions space for media instructions contains some undefined patterns. We need to reject probing of these because they may in future become defined and the kprobes code may then emulate them faultily. Signed-off-by: Jon Medhurst <tixy@yxit.co.uk> Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
2011-04-28ARM: kprobes: Add emulation of RBIT instructionJon Medhurst1-1/+2
The v6T2 RBIT instruction was accidentally being emulated correctly, this patch adds correct decoding for the instruction. Signed-off-by: Jon Medhurst <tixy@yxit.co.uk> Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
2011-04-28ARM: kprobes: Reject probing of LDRB instructions which load PCJon Medhurst1-0/+4
These instructions are specified as UNPREDICTABLE. Signed-off-by: Jon Medhurst <tixy@yxit.co.uk> Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
2011-04-28ARM: kprobes: Fix emulation of LDRD and STRD instructionsJon Medhurst1-6/+6
The decoding of these instructions got the register indexed and immediate indexed forms the wrong way around, causing incorrect emulation. Instructions like "LDRD Rx, [Rx]" were corrupting Rx because the base register writeback was being performed unconditionally, overwriting the value just loaded from memory. The fix is to only writeback the base register when that form of the instruction is used. Note, now that we reject probing writeback with PC the emulation code doesn't need the check rn!=15. Signed-off-by: Jon Medhurst <tixy@yxit.co.uk> Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
2011-04-28ARM: kprobes: Reject probing of LDR/STR instructions which update PC ↵Jon Medhurst1-0/+17
unpredictably Using PC as an base register with writeback is UNPREDICTABLE, as is non word-sized loads or stores of PC. (We only really care about preventing loads to PC but it keeps the code simpler if we also exclude stores.) Signed-off-by: Jon Medhurst <tixy@yxit.co.uk> Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
2011-04-28ARM: kprobes: Fix emulation of LDRH, STRH, LDRSB and LDRSH instructionsJon Medhurst1-2/+3
The decoding of these instructions got the register indexed and immediate indexed forms the wrong way around, causing incorrect emulation. Signed-off-by: Jon Medhurst <tixy@yxit.co.uk> Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
2011-04-28ARM: kprobes: Reject probing of STREX and LDREX instructionsJon Medhurst1-5/+22
The emulation code for STREX and LDREX instructions is faulty, however, rather than attempting to fix this we reject probes of these instructions. We do this because they can never succeed in gaining exclusive access as the exception framework clears the exclusivity monitor when a probes breakpoint is hit. (This is a general problem when probing all instructions executing between a LDREX and its corresponding STREX and can lead to infinite retry loops.) Signed-off-by: Jon Medhurst <tixy@yxit.co.uk> Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
2011-04-28ARM: kprobes: Reject probing of undefined multiply instructionsJon Medhurst1-3/+8
The instructions space for 'Multiply and multiply-accumulate' instructions contains some undefined patterns. We need to reject probing of these because they may in future become defined and the kprobes code may then emulate them faultily. This has already happened with the new MLS instruction which this patch also adds correct decoding for as well as tightening up other decoding tests. (Before this patch the wrong emulation routine was being called for MLS though it still produced correct results.) Signed-off-by: Jon Medhurst <tixy@yxit.co.uk> Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
2011-04-28ARM: kprobes: Fix error in commentJon Medhurst1-1/+1
Signed-off-by: Jon Medhurst <tixy@yxit.co.uk> Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
2011-04-28ARM: kprobes: Reject probing of instructions which write to PC unpredictably.Jon Medhurst1-0/+28
Signed-off-by: Jon Medhurst <tixy@yxit.co.uk> Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
2011-04-28ARM: kprobes: Fix emulation of MRS instructionJon Medhurst1-11/+12
The MRS instruction should set mode and interrupt bits in the read value so it is simpler to use a new simulation routine (simulate_mrs) rather than some modified emulation. prep_emulate_rd12 is now unused and removed. Signed-off-by: Jon Medhurst <tixy@yxit.co.uk> Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
2011-04-28ARM: kprobes: Reject probing MRS instructions which read SPSRJon Medhurst1-5/+7
We need to reject probing of instructions which read SPSR because we can't handle this as the value in SPSR is lost when the exception handler for the probe breakpoint first runs. This patch also fixes the bitmask for MRS instructions decoding to include checking bits 5-7. Signed-off-by: Jon Medhurst <tixy@yxit.co.uk> Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
2011-04-28ARM: kprobes: Fix emulation of Data-processing (immediate) instructionsJon Medhurst1-1/+1
Emulation of instructions like "ADD rd, rn, #<const>" would result in a corrupted value for rd. Signed-off-by: Jon Medhurst <tixy@yxit.co.uk> Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
2011-04-28ARM: kprobes: Fix emulation of CMP, CMN, TST and TEQ instructions.Jon Medhurst1-2/+53
Probing these instructions was corrupting R0 because the emulation code didn't account for the fact that they don't write a result to a register. Signed-off-by: Jon Medhurst <tixy@yxit.co.uk> Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
2011-04-28ARM: kprobes: Remove redundant condition checks from simulation routinesJon Medhurst1-27/+3
Now we have the framework code handling conditionally executed instructions we can remove redundant checks in individual simulation routines. Signed-off-by: Jon Medhurst <tixy@yxit.co.uk> Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
2011-04-28ARM: kprobes: Fix probing of conditionally executed instructionsJon Medhurst3-1/+96
When a kprobe is placed onto conditionally executed ARM instructions, many of the emulation routines used to single step them produce corrupt register results. Rather than fix all of these cases we modify the framework which calls them to test the relevant condition flags and, if the test fails, skip calling the emulation code. Signed-off-by: Jon Medhurst <tixy@yxit.co.uk> Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
2011-04-28kprobes/arm: Fix ldrd/strd emulationViktor Rosendahl1-5/+15
Currently emulate_ldrd and emulate_strd don't even have the adjustment of the PC value, so in case of Rn == PC, it will not update the PC incorrectly but instead load/store from the wrong address. Let's add both the adjustment of the PC value and the check for PC == PC. Signed-off-by: Viktor Rosendahl <viktor.rosendahl@nokia.com> Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
2011-04-28dsa/mv88e6131: fix unknown multicast/broadcast forwarding on mv88e6085Peter Korsgaard2-7/+23
The 88e6085 has a few differences from the other devices in the port control registers, causing unknown multicast/broadcast packets to get dropped when using the standard port setup. At the same time update kconfig to clarify that the mv88e6085 is now supported. Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk> Acked-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-04-28Merge branch 'drm-fixes' of ↵Linus Torvalds9-8/+49
git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 * 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: drm/i915: restore only the mode of this driver on lastclose (v2) drm/radeon/kms: add info query for tile pipes drm/radeon/kms: add missing safe regs for 6xx/7xx drm: select FRAMEBUFFER_CONSOLE_PRIMARY if we have FRAMEBUFFER_CONSOLE
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