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2012-10-16Merge branch 'drm-nouveau-fixes' of ↵Dave Airlie
git://anongit.freedesktop.org/git/nouveau/linux-2.6 into drm-fixes minor set of nouveau fixes. * 'drm-nouveau-fixes' of git://anongit.freedesktop.org/git/nouveau/linux-2.6: drm/nouveau/bios: fix typo in error message drm/nouveau: only call ttm_agp_tt_create when __OS_HAS_AGP drm/nv50/fb: fix double free of vram mm drm/nouveau/pm: do not stop reclocking if failing to set the fan speed drm/nouveau/pm: fix a typo related to the move to the therm subdev drm/nouveau/hwmon: fix the initialization condition
2012-10-16drm/nouveau/bios: fix typo in error messageBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2012-10-16drm/nouveau: only call ttm_agp_tt_create when __OS_HAS_AGPMax Filippov
ttm_agp_tt_create is itself defined under CONFIG_AGP, so there's no point calling it otherwise. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2012-10-16drm/nv50/fb: fix double free of vram mmMarcin Slusarz
nouveau_fb_destroy already calls nouveau_mm_fini on vram mm. Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2012-10-16drm/nouveau/pm: do not stop reclocking if failing to set the fan speedMartin Peres
With the introduction of fan management modes, fan may not be drivable. We should allow reclocking nonetheless. This return was stupid to begin with since it may have left the card in an intermediate state (clocks corresponding to a perflvl and voltage corresponding to another one). The reclocking code will need to be rewritten in a near-future in order to provide a better error handling. Reported-by: Marcin Slusarz <marcin.slusarz@gmail.com> Signed-off-by: Martin Peres <martin.peres@labri.fr> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2012-10-16drm/nouveau/pm: fix a typo related to the move to the therm subdevMartin Peres
Reported-by: Vekin on IRC Reported-by: Emil Velikov <emil.l.velikov@gmail.com> Signed-off-by: Martin Peres <martin.peres@labri.fr> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2012-10-16drm/nouveau/hwmon: fix the initialization conditionMartin Peres
Signed-off-by: Martin Peres <martin.peres@labri.fr> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2012-10-15xtensa: Use Kbuild infrastructure to handle asm-generic headersMax Filippov
Use Kbuild infrastructure to handle the asm-generic headers and remove the wrapper headers that call them. This only affects headers that do nothing but include the generic equivalent. It does not touch any header that does a little more. Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Chris Zankel <chris@zankel.net>
2012-10-15UAPI: (Scripted) Disintegrate arch/xtensa/include/asmDavid Howells
UAPI: (Scripted) Disintegrate arch/xtensa/include/asm Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Michael Kerrisk <mtk.manpages@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Dave Jones <davej@redhat.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Chris Zankel <chris@zankel.net>
2012-10-15xtensa: fix unaligned usermode accessMax Filippov
- correct use of .config #define name; CONFIG_UNALIGNED_USER ---> CONFIG_XTENSA_UNALIGNED_USER Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Pete Delaney <piet@tensilica.com> Signed-off-by: Chris Zankel <chris@zankel.net>
2012-10-15xtensa: reorganize SR referencingMax Filippov
- reference SRs by names where possible, not by numbers; - get rid of __stringify around SR names where possible; - remove unneeded SR names from asm/regs.h; - add SREG_ prefix to remaining SR names; Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Chris Zankel <chris@zankel.net>
2012-10-15xtensa: fix boot parameters parsingMax Filippov
Boot parameter tags with handlers are ignored like this: [ 0.000000] Ignoring tag 0x00001003 [ 0.000000] Ignoring tag 0x00001001 [ 0.000000] Ignoring tag 0x00001004 because neither tagtable entries nor tag handlers appear in the vmlinux. Fix tagtable definition attributes so that tag entries are not dropped. Fix end of memory bank calculation in parse_tag_mem: it is intended to round down to page size, but instead did something strange leading to hang right after boot. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Chris Zankel <chris@zankel.net>
2012-10-15xtensa: fix missing return in do_page_fault for SIGBUS caseMarc Gauthier
Signed-off-by: Marc Gauthier <marc@tensilica.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Chris Zankel <chris@zankel.net>
2012-10-15xtensa: copy_thread with CLONE_VM must not copy live parent AR windowsMarc Gauthier
When doing a fork (new VM), the new task has a mirror image of the parent's stack, so keeps the same live register windows etc. However when doing a clone with CLONE_VM, keeping the same VM (eg. when creating a new thread), the child starts afresh on a new stack -- it cannot share any part of the parent stack. It especially cannot have the same live AR windows as the parent, otherwise it will overwrite the parent stack on overflow, likely causing corruption. (and so it did...) Effectively, the register windows need to be spilled. Turns out it's much easier to simply not copy parent register windows when CLONE_VM is set. Signed-off-by: Marc Gauthier <marc@tensilica.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Chris Zankel <chris@zankel.net>
2012-10-15xtensa: fix memmove(), bcopy(), and memcpy().Chris Zankel
- fix memmove to correctly handle overlapping src and dst; - fix memcpy loop ending conditions from signed '<=' to '!='; - modify bcopy to call memmove; Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Chris Zankel <chris@zankel.net>
2012-10-15xtensa: ISS: fix rs_put_charMax Filippov
ISS serial console prints garbage instead of symbols printed via rs_put_char. gcc optimizes away putting prined symbol into memory buffer because there's no evidence that the buffer is used afterwards. Make rs_put_char and rs_write use simc_write that has explicit wmb. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Chris Zankel <chris@zankel.net>
2012-10-15xtensa: ISS: fix specific simcallsMax Filippov
Simcalls that take memory buffer definitely need wmb or rmb to make sure gcc doesn't optimize away code that fills the buffer. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Chris Zankel <chris@zankel.net>
2012-10-15dtb: fix interrupt assignment for ehci/uhci on wm8505Tony Prisk
EHCI and UHCI devices in wm8505.dtsi should use IRQ 1 & 0 respectively - not 43 as used on newer models. Signed-off-by: Tony Prisk <linux@prisktech.co.nz> Signed-off-by: Olof Johansson <olof@lixom.net>
2012-10-15ARM: dts: compile Integrator device treesLinus Walleij
This makes sure that the ARM Integrator device trees get compiled during build. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Olof Johansson <olof@lixom.net>
2012-10-16drm: fix warning on 32-bit.Dave Airlie
This cast was causing a warning on 32-bit builds. Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-10-16drm: radeon: fix printk format warningRandy Dunlap
drivers/gpu/drm/radeon/radeon_atpx_handler.c:151:3: warning: format '%lu' expects type 'long unsigned int', but argument 2 has type 'size_t' [airlied: Alex had others fixed already, except for atpx one] Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-10-16Merge branch 'drm-fixes-3.7' of git://people.freedesktop.org/~agd5f/linux ↵Dave Airlie
into drm-fixes Alex writes: "This is the first -fixes pull for 3.7. I would have preferred to have gotten it out a bit sooner, but I was on holiday last week. - Cleanup of the new 2 level page table code it get it in better shape and using less memory. - Fix some display issues related to the PLL rework. - Fix some cmpiler warnings and errors with certain config options. - Other misc bug fixes." * 'drm-fixes-3.7' of git://people.freedesktop.org/~agd5f/linux: drm/radeon: fix spelling typos in debugging output drm/radeon: Don't destroy I2C Bus Rec in radeon_ext_tmds_enc_destroy(). drm/radeon: check if pcie gen 2 is already enabled (v2) drm/radeon/cayman: set VM max pfn at MC init drm/radeon: separate pt alloc from lru add drm/radeon: don't add the IB pool to all VMs v2 drm/radeon: allocate page tables on demand v4 drm/radeon: update comments to clarify VM setup (v2) drm/radeon: allocate PPLLs from low to high drm/radeon: fix compilation with backlight disabled drm/radeon: use %zu for formatting size_t
2012-10-16Merge branch 'drm-intel-fixes' of ↵Dave Airlie
git://people.freedesktop.org/~danvet/drm-intel into drm-fixes Daniel writes: "- some register magic to fix hsw crw (Paulo&Ben) - fix backlight destruction for cpu edp (Jani) - fix gen ch7xxx dvo ->get_hw_state - fixup the plane->pipe fixup code, the broken version massively angers the modeset sanity checks - kill pipe A quirk for i855gm, otherwise I get a black screen with the above patch - fixup for gem_get_page helper (Chris) - fixup guardband clipping w/a (Ken), without this mesa master can erronously drop vertices on snb, mesa 9.0 has the optimization reverted - another pageflip vs. modeset fix - kill bogus BUG_ON which broke ums+gem from Willy Tarreau (gasp, people are still using this!)" * 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel: drm/i915: fix non-DP-D eDP backlight cleanup and module reload drm/i915: HSW CRW stability magic drm/i915/dvo-ch7xxx: fix get_hw_state drm/i915: fixup the plane->pipe fixup code drm/i915: rip out the pipe A quirk for i855gm drm/i915: disable wc gtt pte mappings on gen2 drm/i915: fixup i915_gem_object_get_page inline helper drm/i915: Disallow preallocation of requests drm/i915: Set guardband clipping workaround bit in the right register. drm/i915: paper over a pipe-enable vs pageflip race drm/i915: remove useless BUG_ON which caused a regression in 3.5.
2012-10-16ARM: shmobile: r8a7779: use __iomem pointers for MMIOKuninori Morimoto
0a4b04dc299dfb691827a4001b3d8d7e443b71c9 (ARM: shmobile: use __iomem pointers for MMIO) modified iomem pointers so that IOMEM() macro will be used, but clock-r8a7779.c was out of target. This patch fixes it up. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Simon Horman <horms@verge.net.au>
2012-10-15m68k: Remove empty #ifdef/#else/#endif blockGeert Uytterhoeven
Leftover from commit 10b3a979347d4aba7de19e8d33eb8b87fe2a11dd ("UAPI: (Scripted) Disintegrate arch/m68k/include/asm") Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2012-10-15Merge tag 'disintegrate-m68k-20121009' of ↵Geert Uytterhoeven
git://git.infradead.org/users/dhowells/linux-headers into for-linus
2012-10-15thermal, cpufreq: Fix build when CPU_FREQ_TABLE isn't configuredDavid Rientjes
Commit 023614183768 ("thermal: add generic cpufreq cooling implementation") requires cpufreq_frequency_get_table(), but that function is only defined for CONFIG_CPU_FREQ_TABLE resulting in the following build error: drivers/built-in.o: In function `cpufreq_get_max_state': drivers/thermal/cpu_cooling.c:259: undefined reference to `cpufreq_frequency_get_table' drivers/built-in.o: In function `get_cpu_frequency': drivers/thermal/cpu_cooling.c:129: undefined reference to `cpufreq_frequency_get_table' Fix it by selecting CONFIG_CPU_FREQ_TABLE for such a configuration. It turns out CONFIG_EXYNOS_THERMAL also needs CONFIG_CPU_FREQ_TABLE, so select it there as well. Signed-off-by: David Rientjes <rientjes@google.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-10-15serial/8250_hp300: Missing 8250 register interface conversion bitsGeert Uytterhoeven
commit 2655a2c76f80d91da34faa8f4e114d1793435ed3 ("8250: use the 8250 register interface not the legacy one") forgot to fully switch one instance of struct uart_port to struct uart_8250_port, causing the following compile failure: drivers/tty/serial/8250/8250_hp300.c: In function ‘hpdca_init_one’: drivers/tty/serial/8250/8250_hp300.c:174: error: ‘uart’ undeclared (first use in this function) drivers/tty/serial/8250/8250_hp300.c:174: error: (Each undeclared identifier is reported only once drivers/tty/serial/8250/8250_hp300.c:174: error: for each function it appears in.) This went unnoticed in -next, as CONFIG_HPDCA is not set to y by allmodconfig. Reported-by: Fengguang Wu <fengguang.wu@intel.com> Cc: Alan Cox <alan@linux.intel.com> Cc: Philip Blundell <philb@gnu.org> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-15kbuild: Fix accidental revert in commit fe04ddfMichal Marek
Commit fe04ddf7c291 ("kbuild: Do not package /boot and /lib in make tar-pkg") accidentally reverted two previous kbuild commits. I don't know what I was thinking. This brings back changes made by commits 24cc7fb69a5b ("x86/kbuild: archscripts depends on scripts_basic") and c1c1a59e37da ("firmware: fix directory creation rule matching with make 3.80") Reported-by: Jan Beulich <JBeulich@suse.com> Cc: <stable@vger.kernel.org> Signed-off-by: Michal Marek <mmarek@suse.cz> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-10-15drm/radeon: fix spelling typos in debugging outputThomas Friebel
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2012-10-15drm/radeon: Don't destroy I2C Bus Rec in radeon_ext_tmds_enc_destroy().Egbert Eich
radeon_i2c_fini() walks thru the list of I2C bus recs rdev->i2c_bus[] to destroy each of them. radeon_ext_tmds_enc_destroy() however also has code to destroy it's associated I2C bus rec which has been obtained by radeon_i2c_lookup() and is therefore also in the i2c_bus[] list. This causes a double free resulting in a kernel panic when unloading the radeon driver. Removing destroy code from radeon_ext_tmds_enc_destroy() fixes this problem. agd5f: fix compiler warning Signed-off-by: Egbert Eich <eich@suse.de> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2012-10-15drm/radeon: check if pcie gen 2 is already enabled (v2)Alex Deucher
If so, skip enabling it to save time. v2: coding style fixes Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2012-10-15drm/radeon/cayman: set VM max pfn at MC initAlex Deucher
No need to emit them at VM flush as we no longer use variable sized page tables now that we support 2 level page tables. This matches the behavior of SI (which does not support variable sized page tables). Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com>
2012-10-15drm/radeon: separate pt alloc from lru addChristian König
Make it possible to allocate a persistent page table. Signed-off-by: Christian König <deathsimple@vodafone.de> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2012-10-15drm/radeon: don't add the IB pool to all VMs v2Christian König
We want to use VMs without the IB pool in the future. v2: also remove it from radeon_vm_finish. Signed-off-by: Christian König <deathsimple@vodafone.de> Reviewed-by: Michel Dänzer <michel.daenzer@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2012-10-15drm/radeon: allocate page tables on demand v4Christian König
Based on Dmitries work, but splitting the code into page directory and page table handling makes it far more readable and (hopefully) more reliable. Allocations of page tables are made from the SA on demand, that should still work fine since all page tables are of the same size. Also using the fact that allocations from the SA are mostly continuously (except for end of buffer wraps and under very high memory pressure) to group updates send to the chipset specific code into larger chunks. v3: mostly a rewrite of Dmitries previous patch. v4: fix some typos and coding style Signed-off-by: Dmitry Cherkasov <Dmitrii.Cherkasov@amd.com> Signed-off-by: Christian König <deathsimple@vodafone.de> Tested-by: Michel Dänzer <michel.daenzer@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2012-10-15drm/radeon: update comments to clarify VM setup (v2)Alex Deucher
The actual set up and assignment of VM page tables is done on the fly in radeon_gart.c. v2: update vm size comments Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com>
2012-10-15drm/radeon: allocate PPLLs from low to highAlex Deucher
The order shouldn't matter, but there have been problems reported on certain older asics. This behaves more like the original code before the PPLL allocation rework. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: Markus Trippelsdorf <markus@trippelsdorf.de>
2012-10-15drm/radeon: fix compilation with backlight disabledAlex Deucher
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2012-10-15drm/radeon: use %zu for formatting size_tLuca Tettamanti
Fixes compiler warnings on 32bit. Signed-off-by: Luca Tettamanti <kronos.it@gmail.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2012-10-15ext4: fix undefined bit shift result in ext4_fill_flex_infoLukas Czerner
The result of the bit shift expression in '1 << sbi->s_log_groups_per_flex' can be undefined in the case that s_log_groups_per_flex is 31 because the result of the shift is bigger than INT_MAX. In reality this probably should not cause much problems since we'll end up with INT_MIN which will then be converted into 'unsigned int' type, but nevertheless according to the ISO C99 the result is actually undefined. Fix this by changing the left operand to 'unsigned int' type. Note that the commit d50f2ab6f050311dbf7b8f5501b25f0bf64a439b already tried to fix the undefined behaviour, but this was missed. Thanks to Laszlo Ersek for pointing this out and suggesting the fix. Signed-off-by: Lukas Czerner <lczerner@redhat.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com> Reported-by: Laszlo Ersek <lersek@redhat.com>
2012-10-15MAINTAINERS: Add maintainer entry for the USB webcam gadgetLaurent Pinchart
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-15usb: gadget: Make webcam gadget select USB_LIBCOMPOSITELaurent Pinchart
Composite gadget support is now available as a library instead of being built with each gadget. Composite drivers need to select USB_LIBCOMPOSITE. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-15docbook: networking: fix file paths for uapi headersRandy Dunlap
Update file paths in Documentation/DocBook/networking.tmpl for uapi headers. Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-10-15mm: huge_memory: Fix build error.Ralf Baechle
Certain configurations won't implicitly pull in <linux/pagemap.h> resulting in the following build error: mm/huge_memory.c: In function 'release_pte_page': mm/huge_memory.c:1697:2: error: implicit declaration of function 'unlock_page' [-Werror=implicit-function-declaration] mm/huge_memory.c: In function '__collapse_huge_page_isolate': mm/huge_memory.c:1757:3: error: implicit declaration of function 'trylock_page' [-Werror=implicit-function-declaration] cc1: some warnings being treated as errors Reported-by: David Daney <david.daney@cavium.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-10-15ARM: fix oops on initial entry to userspace with Thumb2 kernelsRussell King
Daniel Mack reports an oops at boot with the latest kernels: Internal error: Oops - undefined instruction: 0 [#1] SMP THUMB2 Modules linked in: CPU: 0 Not tainted (3.6.0-11057-g584df1d #145) PC is at cpsw_probe+0x45a/0x9ac LR is at trace_hardirqs_on_caller+0x8f/0xfc pc : [<c03493de>] lr : [<c005e81f>] psr: 60000113 sp : cf055fb0 ip : 00000000 fp : 00000000 r10: 00000000 r9 : 00000000 r8 : 00000000 r7 : 00000000 r6 : 00000000 r5 : c0344555 r4 : 00000000 r3 : cf057a40 r2 : 00000000 r1 : 00000001 r0 : 00000000 Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user Control: 50c5387d Table: 8f3f4019 DAC: 00000015 Process init (pid: 1, stack limit = 0xcf054240) Stack: (0xcf055fb0 to 0xcf056000) 5fa0: 00000001 00000000 00000000 00000000 5fc0: cf055fb0 c000d1a8 00000000 00000000 00000000 00000000 00000000 00000000 5fe0: 00000000 be9b3f10 00000000 b6f6add0 00000010 00000000 aaaabfaf a8babbaa The analysis of this is as follows. In init/main.c, we issue: kernel_thread(kernel_init, NULL, CLONE_FS | CLONE_SIGHAND); This creates a new thread, which falls through to the ret_from_fork assembly, with r4 set NULL and r5 set to kernel_init. You can see this in your oops dump register set - r5 is 0xc0344555, which is the address of kernel_init plus 1 which marks the function as Thumb code. Now, let's look at this code a little closer - this is what the disassembly looks like: c000d180 <ret_from_fork>: c000d180: f03a fe08 bl c0047d94 <schedule_tail> c000d184: 2d00 cmp r5, #0 c000d186: bf1e ittt ne c000d188: 4620 movne r0, r4 c000d18a: 46fe movne lr, pc <-- XXXXXXX c000d18c: 46af movne pc, r5 c000d18e: 46e9 mov r9, sp c000d190: ea4f 3959 mov.w r9, r9, lsr #13 c000d194: ea4f 3949 mov.w r9, r9, lsl #13 c000d198: e7c8 b.n c000d12c <ret_to_user> c000d19a: bf00 nop c000d19c: f3af 8000 nop.w This code was introduced in 9fff2fa0db911 (arm: switch to saner kernel_execve() semantics). I have marked one instruction, and it's the significant one - I'll come back to that later. Eventually, having had a successful call to kernel_execve(), kernel_init() returns zero. In returning, it uses the value in 'lr' which was set by the instruction I marked above. Unfortunately, this causes lr to contain 0xc000d18e - an even address. This switches the ISA to ARM on return but with a non word aligned PC value. So, what do we end up executing? Well, not the instructions above - yes the opcodes, but they don't mean the same thing in ARM mode. In ARM mode, it looks like this instead: c000d18c: 46e946af strbtmi r4, [r9], pc, lsr #13 c000d190: 3959ea4f ldmdbcc r9, {r0, r1, r2, r3, r6, r9, fp, sp, lr, pc}^ c000d194: 3949ea4f stmdbcc r9, {r0, r1, r2, r3, r6, r9, fp, sp, lr, pc}^ c000d198: bf00e7c8 svclt 0x0000e7c8 c000d19c: 8000f3af andhi pc, r0, pc, lsr #7 c000d1a0: e88db092 stm sp, {r1, r4, r7, ip, sp, pc} c000d1a4: 46e81fff ; <UNDEFINED> instruction: 0x46e81fff c000d1a8: 8a00f3ef bhi 0xc004a16c c000d1ac: 0a0cf08a beq 0xc03493dc I have included more above, because it's relevant. The PSR flags which we can see in the oops dump are nZCv, so Z and C are set. All the above ARM instructions are not executed, except for two. c000d1a0, which has no writeback, and writes below the current stack pointer (and that data is lost when we take the next exception.) The other instruction which is executed is c000d1ac, which takes us to... 0xc03493dc. However, remember that bit 1 of the PC got set. So that makes the PC value 0xc03493de. And that value is the value we find in the oops dump for PC. What is the instruction here when interpreted in ARM mode? 0: f71e150c ; <UNDEFINED> instruction: 0xf71e150c and there we have our undefined instruction (remember that the 'never' condition code, 0xf, has been deprecated and is now always executed as it is now being used for additional instructions.) This path also nicely explains the state of the stack we see in the oops dump too. The above is a consistent and sane story for how we got to the oops dump, which all stems from the instruction at 0xc000d18a being wrong. Reported-by: Daniel Mack <zonque@gmail.com> Tested-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-10-15NFSv4.1: Use kcalloc() to allocate zeroed arrays instead of kzalloc()Trond Myklebust
Don't circumvent the array size checks. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-10-15NFSv4.1: Do not call pnfs_return_layout() from an rpciod contextTrond Myklebust
Move the call to pnfs_return_layout() to the read and write rpc_release() callbacks, so that it gets called from nfsiod, which is a more appropriate context. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-10-15NFSv4.1: Kill nfs4_ds_disconnect()Trond Myklebust
There is nothing to prevent another thread from dereferencing ds->ds_clp during or after the call to nfs4_ds_disconnect(), and Oopsing due to the resulting NULL pointer. Instead, we should just rely on filelayout_mark_devid_invalid() to keep us out of trouble by avoiding that deviceid. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-10-15usb: dwc3: shutdown usb_phy when removing the deviceVivek Gautam
We call usb_phy_init() from dwc3_core_init() during probe, so adding usb_phy_shutdown() to dwc3_core_exit() while removing the device so we don't keep PHYs turned on, consuming power, unnecessarily. Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
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