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* omap: mailbox: reorganize headersFelipe Contreras2010-08-04
| | | | | | | | | | Remove kernel.h and module.h since they are not used correctly anyway. Also, remove device.h since it comes along with platform_device.h (always will I guess). Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com> Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
* omap: mailbox: standarize on 'omap-mailbox'Felipe Contreras2010-08-04
| | | | | | | omap{1,2}-mailbox are modules that provide the 'omap-mailbox' driver. Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com> Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
* omap: mailbox: only compile for configured archsFelipe Contreras2010-08-04
| | | | | Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com> Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
* omap: mailbox: simplify omap_mbox_register()Felipe Contreras2010-08-04
| | | | | | | No need to dynamically register mailboxes one by one. Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com> Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
* omap: mailbox: reorganize registeringFelipe Contreras2010-08-04
| | | | | | | It's more extensible this way. Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com> Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
* omap: mailbox: add IRQ namesFelipe Contreras2010-08-04
| | | | | | | Will be useful to identify them later. Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com> Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
* omap: mailbox: remove unecessary fieldsFelipe Contreras2010-08-04
| | | | | | | Nobody is using them. Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com> Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
* omap: mailbox: don't export unecessary symbolsFelipe Contreras2010-08-04
| | | | | Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com> Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
* omap: mailbox: update omap1 probingFelipe Contreras2010-08-04
| | | | | | | Based on omap2 code. Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com> Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
* omap: mailbox: use correct config for omap1Felipe Contreras2010-08-04
| | | | | | | CONFIG_OMAP_DSP is not in mainline, CONFIG_OMAP_MBOX_FWK is. Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com> Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
* omap: mailbox: 2420 should be detected at run-timeFelipe Contreras2010-08-04
| | | | | Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com> Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
* omap: mailbox: reorganize structuresFelipe Contreras2010-08-04
| | | | | | | OMAP4 ones messed up the organization. Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com> Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
* omap: mailbox: trivial cleanupsFelipe Contreras2010-08-04
| | | | | | | And fix a few compilation warnings. Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com> Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
* omap mailbox: Set a device in logical mbox instance for traceabilityHiroshi DOYU2010-08-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | With this patch, you'll get the following sysfs directories. This structure implies that a single platform device, "omap2-mailbox" holds multiple logical mbox instances. This could be the base to add sysfs files for each logical mboxes. Then userland application can access a mbox through sysfs entries if necessary(ex: setting kfifo size dynamically) ~# tree -d -L 2 /sys/devices/platform/omap2-mailbox/ /sys/devices/platform/omap2-mailbox/ |-- driver -> ../../../bus/platform/drivers/omap2-mailbox |-- mbox | |-- dsp <- they are each instances of logical mailbox. | |-- ducati | |-- iva2 | |-- mbox01 | |-- mbox02 | |-- mbox03 | |-- ..... | `-- tesla |-- power `-- subsystem -> ../../../bus/platform This was wrongly dropped by: commit c7c158e57bce6220644f2bcd65d82e1468aa40ec Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
* omap: mailbox: convert block api to kfifoOhad Ben-Cohen2010-08-04
| | | | | | | | | | | | | | | The underlying buffering implementation of mailbox is converted from block API to kfifo due to the simplicity and speed of kfifo. The default size of the kfifo buffer is set to 256 bytes. This value is configurable at compile time (via CONFIG_OMAP_MBOX_KFIFO_SIZE), and can be changed at runtime (via the mbox_kfifo_size module parameter). Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Signed-off-by: Hari Kanigeri <h-kanigeri2@ti.com> Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
* omap: mailbox: remove (un)likely macros from cold pathsOhad Ben-Cohen2010-08-04
| | | | | Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
* omap: mailbox cleanup: split MODULE_AUTHOR lineOhad Ben-Cohen2010-08-04
| | | | | | | use multiple MODULE_AUTHOR lines for multiple authors Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
* omap: mailbox: convert rwlocks to spinlockOhad Ben-Cohen2010-08-04
| | | | | | | | | | | rwlocks are slower and have potential starvation issues therefore spinlocks are generally preferred. see also: http://lwn.net/Articles/364583/ Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Signed-off-by: Kanigeri Hari <h-kanigeri2@ti.com> Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
* Mailbox: disable mailbox interrupt when request queueFernando Guzman Lugo2010-08-04
| | | | | | | | | | | | | when blk_get_request fails to get the request it is returning without read the message from the mailbox fifo, then when it leaves the isr and interruption is trigger again and again and the workqueue which get elements from the request queue is never executed and the kernel is stuck and shows a softlockup message. Now the mailbox interrupt is disabled when request queue is full and enabled when it pop a elememt form the request queue. Signed-off-by: Fernando Guzman Lugo <x0095840@ti.com> Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
* Mailbox: new mutext lock for h/w mailbox configurationHiroshi DOYU2010-08-04
| | | | | | | | | | | mailbox startup and shutdown are being executed against a single H/W module, and a mailbox H/W module is totally __independent__ of the registration of logical mailboxes. So, an independent mutext should be used for startup and shutdown. Signed-off-by: Fernando Guzman Lugo <x0095840@ti.com> Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
* Mailbox: Check valid registered callback before callingFernando Guzman Lugo2010-08-04
| | | | | | | | This patch checks if the mailbox user has assinged a valid callback fuction before calling it. Signed-off-by: Fernando Guzman Lugo <x0095840@ti.com> Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
* Mailbox: flush pending deferred works before freeing blk queueFernando Guzman Lugo2010-08-04
| | | | | | | | flush pending deferred works before freeing blk_queue to prevent any attempt of access to blk_queue after it was freed Signed-off-by: Fernando Guzman Lugo <x0095840@ti.com> Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
* Mailbox: free mailbox interrupt before freeing blk queueFernando Guzman Lugo2010-08-04
| | | | | | | | Free interrupt before freeing blk_queue to avoid any attempt of access to blk_queue after it was freed. Signed-off-by: Fernando Guzman Lugo <x0095840@ti.com> Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
* Linux 2.6.35v2.6.35Linus Torvalds2010-08-01
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* NFS: Fix a typo in include/linux/nfs_fs.hTrond Myklebust2010-08-01
| | | | | | | | | | | | nfs_commit_inode() needs to be defined irrespectively of whether or not we are supporting NFSv3 and NFSv4. Allow the compiler to optimise away code in the NFSv2-only case by converting it into an inlined stub function. Reported-and-tested-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds2010-07-30
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/home/rmk/linux-2.6-arm: cyber2000fb: fix console in truecolor modes cyber2000fb: fix machine hang on module load SA1111: Eliminate use after free ARM: Fix Versatile/Realview/VExpress MMC card detection sense ARM: 6279/1: highmem: fix SMP preemption bug in kmap_high_l1_vipt ARM: Add barriers to io{read,write}{8,16,32} accessors as well ARM: 6273/1: Add barriers to the I/O accessors if ARM_DMA_MEM_BUFFERABLE ARM: 6272/1: Convert L2x0 to use the IO relaxed operations ARM: 6271/1: Introduce *_relaxed() I/O accessors ARM: 6275/1: ux500: don't use writeb() in uncompress.h ARM: 6270/1: clean files in arch/arm/boot/compressed/ ARM: Fix csum_partial_copy_from_user()
| * cyber2000fb: fix console in truecolor modesOndrej Zary2010-07-30
| | | | | | | | | | | | | | | | | | Return value was not set to 0 in setcolreg() with truecolor modes. This causes fb_set_cmap() to abort after first color, resulting in blank palette - and blank console in 24bpp and 32bpp modes. Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * cyber2000fb: fix machine hang on module loadOndrej Zary2010-07-30
| | | | | | | | | | | | | | | | | | | | | | | | I was testing two CyberPro 2000 based PCI cards on x86 and the machine always hanged completely when the cyber2000fb module was loaded. It seems that the card hangs when some registers are accessed too quickly after writing RAMDAC control register. With this patch, both card work. Add delay after RAMDAC control register write to prevent hangs on module load. Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * SA1111: Eliminate use after freeJulia Lawall2010-07-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | __sa1111_remove always frees its argument, so the subsequent reference to sachip->saved_state represents a use after free. __sa1111_remove does not appear to use the saved_state field, so the patch simply frees it first. A simplified version of the semantic patch that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression E,E2; @@ __sa1111_remove(E) ... ( E = E2 | * E ) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * ARM: Fix Versatile/Realview/VExpress MMC card detection senseRussell King2010-07-30
| | | | | | | | | | | | | | | | | | The MMC card detection sense has become really confused with negations at various levels, leading to some platforms not detecting inserted cards. Fix this by converting everything to positive logic throughout, thereby getting rid of these negations. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * ARM: 6279/1: highmem: fix SMP preemption bug in kmap_high_l1_viptGary King2010-07-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | smp_processor_id() must not be called from a preemptible context (this is checked by CONFIG_DEBUG_PREEMPT). kmap_high_l1_vipt() was doing so. This lead to a problem where the wrong per_cpu kmap_high_l1_vipt_depth could be incremented, causing a BUG_ON(*depth <= 0); in kunmap_high_l1_vipt(). The solution is to move the call to smp_processor_id() after the call to preempt_disable(). Originally by: Andrew Howe <ahowe@nvidia.com> Signed-off-by: Gary King <gking@nvidia.com> Acked-by: Nicolas Pitre <nico.as.pitre@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * ARM: Add barriers to io{read,write}{8,16,32} accessors as wellRussell King2010-07-29
| | | | | | | | | | | | | | | | | | The ioread/iowrite accessors also need barriers as they're used in place of readl/writel et.al. in portable drivers. Create __iormb() and __iowmb() which are conditionally defined to be barriers dependent on ARM_DMA_MEM_BUFFERABLE, and always use these macros in the accessors. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * ARM: 6273/1: Add barriers to the I/O accessors if ARM_DMA_MEM_BUFFERABLECatalin Marinas2010-07-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When the coherent DMA buffers are mapped as Normal Non-cacheable (ARM_DMA_MEM_BUFFERABLE enabled), buffer accesses are no longer ordered with Device memory accesses causing failures in device drivers that do not use the mandatory memory barriers before starting a DMA transfer. LKML discussions led to the conclusion that such barriers have to be added to the I/O accessors: http://thread.gmane.org/gmane.linux.kernel/683509/focus=686153 http://thread.gmane.org/gmane.linux.ide/46414 http://thread.gmane.org/gmane.linux.kernel.cross-arch/5250 This patch introduces a wmb() barrier to the write*() I/O accessors to handle the situations where Normal Non-cacheable writes are still in the processor (or L2 cache controller) write buffer before a DMA transfer command is issued. For the read*() accessors, a rmb() is introduced after the I/O to avoid speculative loads where the driver polls for a DMA transfer ready bit. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * ARM: 6272/1: Convert L2x0 to use the IO relaxed operationsCatalin Marinas2010-07-29
| | | | | | | | | | | | | | | | | | | | | | This patch is in preparation for a subsequent patch which adds barriers to the I/O accessors. Since the mandatory barriers may do an L2 cache sync, this patch avoids a recursive call into l2x0_cache_sync() via the write*() accessors and wmb() and a call into l2x0_cache_sync() with the l2x0_lock held. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * ARM: 6271/1: Introduce *_relaxed() I/O accessorsCatalin Marinas2010-07-29
| | | | | | | | | | | | | | | | | | | | | | | | This patch introduces readl*_relaxed()/write*_relaxed() as the main I/O accessors (when __mem_pci is defined). The standard read*()/write*() macros are now based on the relaxed accessors. This patch is in preparation for a subsequent patch which adds barriers to the I/O accessors. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * ARM: 6275/1: ux500: don't use writeb() in uncompress.hRabin Vincent2010-07-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Don't use writeb() in uncompress.h, to avoid the following build errors when the "Add barriers to the I/O accessors" series is applied. Use __raw_writeb() instead. arch/arm/boot/compressed/misc.o: In function `putc': arch/arm/mach-ux500/include/mach/uncompress.h:41: undefined reference to `outer_cache' Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * ARM: 6270/1: clean files in arch/arm/boot/compressed/Magnus Damm2010-07-29
| | | | | | | | | | | | | | | | Update the compressed boot Makefile for ARM to remove files during clean. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * ARM: Fix csum_partial_copy_from_user()Russell King2010-07-26
| | | | | | | | | | | | | | | | | | | | | | Using the parent functions frame pointer to access our arguments is completely wrong, whether or not we're building with frame pointers or not. What we should be using is the stack pointer to get at the word above the registers we stacked ourselves. Reported-by: Bosko Radivojevic <bosko.radivojevic@gmail.com> Tested-by: Bosko Radivojevic <bosko.radivojevic@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6Linus Torvalds2010-07-30
|\ \ | | | | | | | | | | | | | | | | | | * 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6: NFS: Ensure that writepage respects the nonblock flag NFS: kswapd must not block in nfs_release_page nfs: include space for the NUL in root path
| * | NFS: Ensure that writepage respects the nonblock flagTrond Myklebust2010-07-30
| | | | | | | | | | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | NFS: kswapd must not block in nfs_release_pageTrond Myklebust2010-07-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | See https://bugzilla.kernel.org/show_bug.cgi?id=16056 If other processes are blocked waiting for kswapd to free up some memory so that they can make progress, then we cannot allow kswapd to block on those processes. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: stable@kernel.org
| * | nfs: include space for the NUL in root pathDan Carpenter2010-07-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In root_nfs_name() it does the following: if (strlen(buf) + strlen(cp) > NFS_MAXPATHLEN) { printk(KERN_ERR "Root-NFS: Pathname for remote directory too long.\n"); return -1; } sprintf(nfs_export_path, buf, cp); In the original code if (strlen(buf) + strlen(cp) == NFS_MAXPATHLEN) then the sprintf() would lead to an overflow. Generally the rest of the code assumes that the path can have NFS_MAXPATHLEN (1024) characters and a NUL terminator so the fix is to add space to the nfs_export_path[] buffer. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | | Merge branch 'drm-fixes' of ↵Linus Torvalds2010-07-30
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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/edid: Fix the HDTV hack sync adjustment drm/radeon/kms: fix radeon mid power profile reporting
| * | | drm/edid: Fix the HDTV hack sync adjustmentAdam Jackson2010-07-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We're adjusting horizontal timings only here, moving vsync was just a slavish translation of a typo in the X server. Signed-off-by: Adam Jackson <ajax@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
| * | | drm/radeon/kms: fix radeon mid power profile reportingDaniel J Blueman2010-07-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix incorrectly reporting 'default' power profile, when it is set to 'mid'. Signed-off-by: Daniel J Blueman <daniel.blueman@gmail.com> Reviewed-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
* | | | mm: fix ia64 crash when gcore reads gate areaHugh Dickins2010-07-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Debian's ia64 autobuilders have been seeing kernel freeze or reboot when running the gdb testsuite (Debian bug 588574): dannf bisected to 2.6.32 62eede62dafb4a6633eae7ffbeb34c60dba5e7b1 "mm: ZERO_PAGE without PTE_SPECIAL"; and reproduced it with gdb's gcore on a simple target. I'd missed updating the gate_vma handling in __get_user_pages(): that happens to use vm_normal_page() (nowadays failing on the zero page), yet reported success even when it failed to get a page - boom when access_process_vm() tried to copy that to its intermediate buffer. Fix this, resisting cleanups: in particular, leave it for now reporting success when not asked to get any pages - very probably safe to change, but let's not risk it without testing exposure. Why did ia64 crash with 16kB pages, but succeed with 64kB pages? Because setup_gate() pads each 64kB of its gate area with zero pages. Reported-by: Andreas Barth <aba@not.so.argh.org> Bisected-by: dann frazier <dannf@debian.org> Signed-off-by: Hugh Dickins <hughd@google.com> Tested-by: dann frazier <dannf@dannf.org> Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | CIFS: Remove __exit mark from cifs_exit_dns_resolver()David Howells2010-07-30
| |/ / |/| | | | | | | | | | | | | | | | | | | | | | | | | | Remove the __exit mark from cifs_exit_dns_resolver() as it's called by the module init routine in case of error, and so may have been discarded during linkage. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6Linus Torvalds2010-07-29
|\ \ \ | | | | | | | | | | | | | | | | | | | | * 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6: [S390] etr: fix clock synchronization race [S390] Fix IRQ tracing in case of PER
| * | | [S390] etr: fix clock synchronization raceMartin Schwidefsky2010-07-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The etr events switch-to-local and sync-check disable the synchronous clock and schedule a work queue that tries to get the clock back into sync. If another switch-to-local or sync-check event occurs while the work queue function etr_work_fn still runs the eacr.es bit and the clock_sync_word can become inconsistent because check_sync_clock only uses the clock_sync_word to determine if the clock is in sync or not. The second pass of the etr_work_fn will reset the eacr.es bit but will leave the clock_sync_word intact. Fix this race by moving the reset of the eacr.es bit into the switch-to-local and sync-check functions and by checking the eacr.es bit as well to decide if the clock needs to be synced. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | | [S390] Fix IRQ tracing in case of PERHeiko Carstens2010-07-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In case user space is single stepped (PER) the program check handler claims too early that IRQs are enabled on the return path. Subsequent checks will notice that the IRQ mask in the PSW and what lockdep thinks the IRQ mask should be do not correlate and therefore will print a warning to the console and disable lockdep. Fix this by doing all the work within the correct context. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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