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* ARM: pm: omap34xx: remove misleading comment and use of r9Russell King2011-06-241-7/+2
| | | | | | | | | | | | | | | The code alludes to r9 being used to indicate what was lost over the suspend/resume transition. However, although r9 is set, it is never actually used. Also, the comments before the code (which refer to the value of r9) and the comments against the assignment of r9 contradict each other, so just remove them to avoid confusion. Reviewed-by: Kevin Hilman <khilman@ti.com> Tested-by: Kevin Hilman <khilman@ti.com> Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: pm: omap34xx: no need to save all registers in sleep34xx.SRussell King2011-06-241-5/+5
| | | | | | | | | | | | The ABI allows called functions to corrupt r0-r3 and ip (r12). So its pointless saving these registers in the suspend code - the calling function will expect them to be corrupted and so won't rely on their contents after resume. Reviewed-by: Kevin Hilman <khilman@ti.com> Tested-by: Kevin Hilman <khilman@ti.com> Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: pm: pxa: move cpu_suspend into C codeRussell King2011-06-246-59/+33
| | | | | | | | We don't need a veneer for cpu_suspend, it can be called directly from C code now. Move it into the PXA CPU suspend functions, along with the accumulator register saving/restoring. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: pm: samsung: no need to call flush_cache_all()Russell King2011-06-242-4/+0
| | | | | | | | The core suspend code calls flush_cache_all() immediately prior to calling the suspend finisher function, so remove these needless calls from the finisher functions. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: pm: samsung: move cpu_suspend into C codeRussell King2011-06-2411-83/+10
| | | | | | | | Move the call to cpu_suspend into C code, and noticing that all the s3c_cpu_save implementations are now identical, we can move this into the common samsung code. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: pm: mach-s3c64xx: cleanup s3c_cpu_saveRussell King2011-06-241-3/+1
| | | | | | | | s3c_cpu_save does not need to save any registers with the new cpu_suspend calling convention. Remove these redundant instructions. Acked-by: Frank Hofmann <frank.hofmann@tomtom.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: pm: mach-exynos4: cleanup s3c_cpu_saveRussell King2011-06-241-4/+1
| | | | | | | s3c_cpu_save does not need to save any registers with the new cpu_suspend calling convention. Remove these redundant instructions. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: pm: mach-s5pv210: cleanup s3c_cpu_saveRussell King2011-06-241-4/+1
| | | | | | | s3c_cpu_save does not need to save any registers with the new cpu_suspend calling convention. Remove these redundant instructions. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: pm: plat-s3c24xx: cleanup s3c_cpu_saveRussell King2011-06-241-3/+1
| | | | | | | | s3c_cpu_save does not need to save any registers with the new cpu_suspend calling convention. Remove these redundant instructions. Tested-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: pm: sa1100: move cpu_suspend into C codeRussell King2011-06-242-11/+4
| | | | | | | | We don't need a veneer for cpu_suspend, it can be called directly from C code now. Move it into sa11x0_pm_enter() along with the re-enabling of clock switching. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: pm: move cpu_init() call into core codeRussell King2011-06-244-7/+1
| | | | | | | | | | | As we have core code dealing with CPU suspend/resume, we can re-initialize the CPUs exception banked registers via that code rather than having platforms deal with that level of detail. So, move the call to cpu_init() out of platform code into core code. Tested-by: Kevin Hilman <khilman@ti.com> Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: pm: convert cpu_suspend() to a normal functionRussell King2011-06-248-40/+31
| | | | | | | | | | | | | | | | | cpu_suspend() has a weird calling method which makes it only possible to call from assembly code: it returns with a modified stack pointer to finish the suspend, but on resume, it 'returns' via a provided pointer. We can make cpu_suspend() appear to be a normal function merely by swapping the resume pointer argument and the link register. Do so, and update all callers to take account of this more traditional behaviour. Acked-by: Frank Hofmann <frank.hofmann@tomtom.com> Tested-by: Kevin Hilman <khilman@ti.com> Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: pm: move sa1100 to use proper suspend func arg0Russell King2011-06-241-4/+4
| | | | | | | | In the previous commit, we introduced an official way to supply an argument to the suspend function. Convert the sa1100 suspend code to use this method. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: pm: rejig suspend follow-on function calling conventionRussell King2011-06-241-4/+5
| | | | | | | | | | Save the suspend function pointer onto the stack for use when returning. Allocate r2 to pass an argument to the suspend function. Acked-by: Frank Hofmann <frank.hofmann@tomtom.com> Tested-by: Kevin Hilman <khilman@ti.com> Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: pm: reallocate registers to avoid r2, r3Russell King2011-06-241-9/+9
| | | | | | | | | | Avoid using r2 and r3 in the suspend code, allowing these to be passed further into the function as arguments. Acked-by: Frank Hofmann <frank.hofmann@tomtom.com> Tested-by: Kevin Hilman <khilman@ti.com> Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: pm: preserve r4 - r11 across a suspendRussell King2011-06-241-2/+3
| | | | | | | | | | | Make cpu_suspend()..return function preserve r4 to r11 across a suspend cycle. This is in preparation of relieving platform support code from this task. Acked-by: Frank Hofmann <frank.hofmann@tomtom.com> Tested-by: Kevin Hilman <khilman@ti.com> Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: pm: extract common code from MULTI_CPU/!MULTI_CPU pathsRussell King2011-06-241-18/+6
| | | | | | | | | | Very little code is different between these two paths now, so extract the common code. Acked-by: Frank Hofmann <frank.hofmann@tomtom.com> Tested-by: Kevin Hilman <khilman@ti.com> Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: pm: move return address (for cpu_resume) to top of stackRussell King2011-06-241-8/+8
| | | | | | | | | | Move the return address for cpu_resume to the top of stack so that cpu_resume looks more like a normal function. Acked-by: Frank Hofmann <frank.hofmann@tomtom.com> Tested-by: Kevin Hilman <khilman@ti.com> Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: pm: make MULTI_CPU and !MULTI_CPU resume paths the sameRussell King2011-06-241-9/+3
| | | | | | | | | | | Eliminate the differences between MULTI_CPU and non-MULTI_CPU resume paths, making the saved structure identical irrespective of the way the kernel was configured. Acked-by: Frank Hofmann <frank.hofmann@tomtom.com> Tested-by: Kevin Hilman <khilman@ti.com> Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: pm: sa1100: no need to re-enable clock switchingRussell King2011-06-241-1/+0
| | | | | | | | | This is now taken care of by calling cpu_proc_init() in the resume path, so eliminate this unnecessary call. Tested-by: Kevin Hilman <khilman@ti.com> Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: pm: arrange for cpu_proc_init() to be called on resumeRussell King2011-06-242-52/+51
| | | | | | | | | | | | | | | cpu_proc_init() does processor specific initialization, which we do at boot time. We have been omitting to do this on resume, which causes some of this initialization to be skipped. We've also been skipping this on SMP initialization too. Ensure that cpu_proc_init() is always called appropriately by moving it into cpu_init(), and move cpu_init() to a more appropriate point in the boot initialization. Tested-by: Kevin Hilman <khilman@ti.com> Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: pm: ensure ARMv7 CPUs save and restore the TLS registerRussell King2011-06-241-3/+7
| | | | | | | | | Ensure that the TLS register is saved and restored over a suspend cycle, so that userspace programs don't see a corrupted TLS value. Tested-by: Kevin Hilman <khilman@ti.com> Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: pm: proc-v7: fix missing struct processor pointers for suspend codeRussell King2011-06-241-3/+3
| | | | | | | | | Add the missing suspend/resume pointers for the suspend code. This is needed when building for multiple CPUs. Tested-by: Kevin Hilman <khilman@ti.com> Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: 6969/1: plat-iop: fix build errorLinus Walleij2011-06-211-0/+1
| | | | | | | | | The iop13xx_defconfig didn't build since the platform code uses defines from <asm/ptrace.h>. Simply add the include so it compiles. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: 6961/1: zImage: Add build-time check for correctly-sized proc_type entriesDave Martin2011-06-211-1/+13
| | | | | | | | | | | | | | | It is easy to mis-maintain the proc_types table such that the entries become wrongly-sized and misaligned when the kernel is built in Thumb-2. This patch adds an assembly-time check which will turn most common size/alignment mistakes in this table into build failures, to avoid having to debug the boot-time kernel hang which would happen if the resulting kernel were actually booted. Signed-off-by: Dave Martin <dave.martin@linaro.org> Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: SMP: wait for CPU to be marked activeRussell King2011-06-211-1/+5
| | | | | | | | When we bring a CPU online, we should wait for it to become active before entering the idle thread, so we know that the scheduler and thread migration is going to work. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: 6963/1: Thumb-2: Relax relocation requirements for non-function symbolsDave Martin2011-06-171-2/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The "Thumb bit" of a symbol is only really meaningful for function symbols (STT_FUNC). However, sometimes a branch is relocated against a non-function symbol; for example, PC-relative branches to anonymous assembler local symbols are typically fixed up against the start-of-section symbol, which is not a function symbol. Some inline assembler generates references of this type, such as fixup code generated by macros in <asm/uaccess.h>. The existing relocation code for R_ARM_THM_CALL/R_ARM_THM_JUMP24 interprets this case as an error, because the target symbol appears to be an ARM symbol; but this is really not the case, since the target symbol is just a base in these cases. The addend defines the precise offset to the target location, but since the addend is encoded in a non-interworking Thumb branch instruction, there is no explicit Thumb bit in the addend. Because these instructions never interwork, the implied Thumb bit in the addend is 1, and the destination is Thumb by definition. This patch removes the extraneous Thumb bit check for non-function symbols, enabling modules containing the affected relocation types to be loaded. No modification to the actual relocation code is required, since this code does not take bit[0] of the location->destination offset into account in any case. Function symbols are always checked for interworking conflicts, as before. Signed-off-by: Dave Martin <dave.martin@linaro.org> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: 6962/1: mach-h720x: fix build errorLinus Walleij2011-06-171-0/+2
| | | | | | | | | | The h7201/h7202 machines did not build since they define ARM_DMA_ZONE_OFFSET but do not select ZONE_DMA. Fix it up by selecting ZONE_DMA in their Kconfig. Cc: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: 6959/1: SMP build fix for entry-macro-multi.SMagnus Damm2011-06-172-0/+6
| | | | | | | | | | | | | | | | | The assembly code in entry-macro-multi.S does not build without the include asm/assembler.h in the case of CONFIG_SMP=y. Fixes the rather theoretical SMP build of mach-shmobile/entry-intc.c: arch/arm/include/asm/entry-macro-multi.S: Assembler messages: arch/arm/include/asm/entry-macro-multi.S:20: Error: bad instruction `alt_smp(test_for_ipi r0,r6,r5,lr)' arch/arm/include/asm/entry-macro-multi.S:20: Error: bad instruction `alt_up_b(9997f)' make[1]: *** [arch/arm/mach-shmobile/entry-intc.o] Error 1 make: *** [arch/arm/mach-shmobile] Error 2 make: *** Waiting for unfinished jobs.... Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* Merge branch 'drm-fixes' of ↵Linus Torvalds2011-06-1715-75/+237
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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/radeon/kms: use helper functions for fence read/write drm/radeon/kms: set DP link config properly for DP bridges drm/radeon/kms/atom: AdjustPixelClock fixes for DP bridges drm/radeon/kms: fix handling of DP to LVDS bridges drm/radeon/kms: issue blank/unblank commands for ext encoders drm/radeon/kms: fix support for DDC on dp bridges drm/radeon/kms: add support for load detection on dp bridges drm/radeon/kms: add missing external encoder action drm/radeon/kms: rework atombios_get_encoder_mode() drm/radeon/kms: fix num crtcs for Cedar and Caicos Revert "drm/i915: Enable GMBUS for post-gen2 chipsets" drivers/gpu/drm: use printk_ratelimited instead of printk_ratelimit drm/radeon: workaround a hw bug on some radeon chipsets with all-0 EDIDs. drm: make debug levels match in edid failure code. drm/radeon/kms: clear wb memory by default drm/radeon/kms: be more pedantic about the g5 quirk (v2) drm/radeon/kms: signed fix for evergreen thermal drm: populate irq_by_busid-member for pci
| * drm/radeon/kms: use helper functions for fence read/writeAlex Deucher2011-06-171-15/+36
| | | | | | | | | | | | | | | | | | The existing code assumed scratch registers in a number of places while in most cases we are be using writeback and events rather than scratch registers. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
| * drm/radeon/kms: set DP link config properly for DP bridgesAlex Deucher2011-06-171-1/+2
| | | | | | | | | | | | | | DP clock and lanes were not set properly for DP bridges. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
| * drm/radeon/kms/atom: AdjustPixelClock fixes for DP bridgesAlex Deucher2011-06-172-0/+8
| | | | | | | | | | | | | | | | Need to set the external transmitter type properly in AdjustPixelClock to get the properly output. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
| * drm/radeon/kms: fix handling of DP to LVDS bridgesAlex Deucher2011-06-171-4/+7
| | | | | | | | | | | | | | | | | | | | They need to be treated like eDP rather than DP. May fix: https://bugzilla.kernel.org/show_bug.cgi?id=34822 Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
| * drm/radeon/kms: issue blank/unblank commands for ext encodersAlex Deucher2011-06-171-11/+14
| | | | | | | | | | | | | | Required for DPMS on some systems. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
| * drm/radeon/kms: fix support for DDC on dp bridgesAlex Deucher2011-06-173-4/+29
| | | | | | | | | | | | | | | | Need to set up the bridge for DDC prior to the i2c over aux transaction. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
| * drm/radeon/kms: add support for load detection on dp bridgesAlex Deucher2011-06-172-1/+68
| | | | | | | | | | | | | | dp to vga bridges for example. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
| * drm/radeon/kms: add missing external encoder actionAlex Deucher2011-06-171-0/+1
| | | | | | | | | | | | | | required for ddc. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
| * drm/radeon/kms: rework atombios_get_encoder_mode()Alex Deucher2011-06-171-14/+9
| | | | | | | | | | | | | | | | This should give us more reliable results if the table is called before an active device is set. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
| * drm/radeon/kms: fix num crtcs for Cedar and CaicosAlex Deucher2011-06-171-12/+19
| | | | | | | | | | | | | | Only support 4 rather than 6. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
| * Revert "drm/i915: Enable GMBUS for post-gen2 chipsets"Jean Delvare2011-06-171-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | Revert commit 8f9a3f9b63b8cd3f03be9dc53533f90bd4120e5f. This fixes a hang when loading the eeprom driver (see bug #35572.) GMBUS will be re-enabled later, differently. Signed-off-by: Jean Delvare <khali@linux-fr.org> Reported-by: Marek Otahal <markotahal@gmail.com> Tested-by: Yermandu Patapitafious <yermandu.dev@gmail.com> Tested-by: Andrew Lutomirski <luto@mit.edu> Acked-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Dave Airlie <airlied@redhat.com>
| * drivers/gpu/drm: use printk_ratelimited instead of printk_ratelimitChristian Dietrich2011-06-161-4/+5
| | | | | | | | | | | | | | | | Since printk_ratelimit() shouldn't be used anymore (see comment in include/linux/printk.h), replace it with printk_ratelimited. Signed-off-by: Christian Dietrich <christian.dietrich@informatik.uni-erlangen.de> Signed-off-by: Dave Airlie <airlied@redhat.com>
| * drm/radeon: workaround a hw bug on some radeon chipsets with all-0 EDIDs.Dave Airlie2011-06-163-0/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some RS690 chipsets seem to end up with floating connectors, either a DVI connector isn't actually populated, or an add-in HDMI card is available but not installed. In this case we seem to get a NULL byte response for each byte of the i2c transaction, so we detect this case and if we see it we don't do anymore DDC transactions on this connector. I've tested this on my RS690 without the HDMI card installed and it seems to work fine. Signed-off-by: Dave Airlie <airlied@redhat.com> Reviewed-by: Alex Deucher <alexdeucher@gmail.com>
| * drm: make debug levels match in edid failure code.Dave Airlie2011-06-161-2/+2
| | | | | | | | | | | | | | | | this puts the header and followup at the same loglevel as the hex dump code. Signed-off-by: Dave Airlie <airlied@redhat.com> Reviewed-by: Alex Deucher <alexdeucher@gmail.com>
| * drm/radeon/kms: clear wb memory by defaultAlex Deucher2011-06-161-0/+2
| | | | | | | | | | Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
| * drm/radeon/kms: be more pedantic about the g5 quirk (v2)Alex Deucher2011-06-161-3/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | I don't think Apple offered any other cards for this mac, so I doubt this will be an issue, but just to be on the safe side, check the pci ids as well. v2: fix spelling in commit message Reviewed-by: Michel Dänzer <michel@daenzer.net> Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Cc: Joachim Henke <j-o@users.sourceforge.net> Cc: Michel Dänzer <michel@daenzer.net> Signed-off-by: Dave Airlie <airlied@redhat.com>
| * drm/radeon/kms: signed fix for evergreen thermalAlex Deucher2011-06-161-1/+2
| | | | | | | | | | | | | | temperature is signed. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
| * drm: populate irq_by_busid-member for pciWolfram Sang2011-06-161-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 8410ea (drm: rework PCI/platform driver interface) implemented drm_pci_irq_by_busid() but forgot to make it available in the drm_pci_bus-struct. This caused a freeze on my Radeon9600-equipped laptop when executing glxgears. Thanks to Michel for noticing the flaw. [airlied: made function static also] Reported-by: Michel Dänzer <daenzer@vmware.com> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Cc: stable@kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/linux-2.6-nsfdLinus Torvalds2011-06-171-3/+6
|\ \ | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/linux-2.6-nsfd: proc: Fix Oops on stat of /proc/<zombie pid>/ns/net
| * | proc: Fix Oops on stat of /proc/<zombie pid>/ns/netEric W. Biederman2011-06-151-3/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Don't call iput with the inode half setup to be a namespace filedescriptor. Instead rearrange the code so that we don't initialize ei->ns_ops until after I ns_ops->get succeeds, preventing us from invoking ns_ops->put when ns_ops->get failed. Reported-by: Ingo Saitz <Ingo.Saitz@stud.uni-hannover.de> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>