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2009-10-06gigaset: add kerneldoc commentsTilman Schmidt6-44/+166
Add kerneldoc comments to some functions in the Gigaset driver. Impact: documentation Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-06gigaset: correct debugging output selectionTilman Schmidt1-3/+6
Dump payload data consistently only when DEBUG_STREAM_DUMP debug bit is set. Impact: debugging aid Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-06gigaset: improve error recoveryTilman Schmidt1-24/+45
When the Gigaset base stops responding, try resetting the USB connection to recover. Impact: error handling improvement Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-06gigaset: fix device ERROR response handlingTilman Schmidt1-8/+8
Clear out pending command that got rejected with 'ERROR' response. This fixes the bug where unloading the driver module would hang with the message: "gigaset: not searching scheduled commands: busy" after a device communication error. Impact: error handling bugfix Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-06gigaset: announce if built with debuggingTilman Schmidt1-1/+7
Mention in the driver load announcement whether the driver was built with debugging messages enabled, to facilitate support. Impact: informational message Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-06gigaset: handle isoc frame errors more gracefullyTilman Schmidt1-11/+7
Don't drop the remainder of an URB if an isochronous frame has an error. Impact: error handling improvement Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-06gigaset: linearize skbTilman Schmidt1-0/+6
The code of the Gigaset driver assumes that sk_buff-s coming from the ISDN4Linux subsystem are always linear. Explicitly calling skb_linearize() is cheap if they are, but much more robust in case they ever aren't. Impact: robustness improvement Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-06gigaset: fix reject/hangup handlingTilman Schmidt1-0/+5
Signal D channel disconnect in a few cases where it was missed, including when an incoming call is disconnected before it was accepted. Impact: error handling improvement Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-06isdn: make capidrv module parameter "debugmode" writeableTilman Schmidt1-1/+1
Being able to change the debugmode module parameter of capidrv on the fly is quite useful for debugging and doesn't do any harm. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-06isdn: avoid races in capidrvTilman Schmidt1-12/+13
In several places, capidrv sends a CAPI message to the ISDN device and then updates its internal state accordingly. If the response message from the device arrives before the state is updated, it may be rejected or processed incorrectly. Avoid these races by updating the state before emitting the message. Impact: bugfix Signed-off-by: Tilman Schmidt <tilman@imap.cc> Acked-by: Karsten Keil <keil@b1-systems.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-06isdn: accept CAPI Informational Info values as successTilman Schmidt1-1/+1
Info values in the 0x00xx range are defined in the CAPI standard as "Informational, message processed successfully". Therefore a CONNECT_B3_CONF message with an Info value in that range should open an NCCI just as with Info==0. Impact: minor bugfix Signed-off-by: Tilman Schmidt <tilman@imap.cc> Acked-by: Karsten Keil <keil@b1-systems.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-06Documentation: expand isdn/INTERFACE.CAPI documentTilman Schmidt1-16/+67
- Note that send_message() may be called in interrupt context. - Describe the storage of CAPI messages and payload data in SKBs. - Add more details to the description of the _cmsg structure. - Describe kernelcapi debugging output. Impact: documentation Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-07drm/radeon: Fix setting of bitsRoel Kluin2-6/+6
Duplicate bits set Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-10-06be2net: Bug fix to properly update ethtool tx-checksumming after ethtool -K <ifname> tx offAjit Khaparde2-3/+3
This is a fix for a bug which was a result of wrong use of checksum offload flag. The status of tx-checksumming was not changed from on to off after a 'ethtool -K <ifname> tx off' operation. Use the proper checksum offload flag NETIF_F_HW_CSUM instead of NETIF_F_IP_CSUM and NETIF_F_IPV6_CSUM. Patch is against net-2.6 tree. Signed-off-by: Ajit Khaparde <ajitk@serverengines.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-06be2net: Fix a typo in be_cmds.hAjit Khaparde1-1/+1
MCC_STATUS_NOT_SUPPORTED should be decimal 66 not hex 66. This patch fixes this typo. Patch against net-2.6 tree. Signed-off-by: Ajit Khaparde <ajitk@serverengines.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-06be2net: Bug Fix while accounting of multicast frames during netdev stats updateAjit Khaparde1-1/+1
While updating the statistics to be passed via the get_stats, tx multicast frames were being accounted instead of rx multicast frames. This patch fixes the bug. This patch is against the net-2.6 tree. Signed-off-by: Ajit Khaparde <ajitk@serverengines.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-06qlge: Fix lock/mutex warnings.Ron Mercer4-17/+9
Get rid of spinlock and private mutex usage for exclusive access to the HW semaphore register. rtnl_lock already creates exclusive access to this register in all driver API. Add rtnl to firmware worker threads that also use the HW semaphore register. Signed-off-by: Ron Mercer <ron.mercer@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-06qlge: Fix queueing of firmware handler in ISR.Ron Mercer1-3/+5
Check that we are not already polling firmware events before we queue the firmware event worker, then disable firmware interrupts. Otherwise we can queue the same event multiple times. Signed-off-by: Ron Mercer <ron.mercer@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-06qlge: Fix some bit definitions for reset register.Ron Mercer1-3/+3
Signed-off-by: Ron Mercer <ron.mercer@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-06ASoC: WM8350 capture PGA mutes are invertedMark Brown1-2/+2
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: stable@kernel.org
2009-10-06ASoC: Remove absent SYNC and TDM DAI format options from i.MX SSIMark Brown1-8/+0
These should be handled via set_tdm_slot() now and cause build failures as-is. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2009-10-06omapfb: Blizzard: constify register address tablesTommi Rantala1-4/+4
Constify register address tables Cc: Tomi Valkeinen <tomi.valkeinen@nokia.com> Cc: Imre Deak <imre.deak@nokia.com> Signed-off-by: Tommi Rantala <tt.rantala@gmail.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-06omapfb: Blizzard: fix pointer to be constTommi Rantala1-1/+1
Fixes a compiler warning: warning: assignment discards qualifiers from pointer target type Cc: Tomi Valkeinen <tomi.valkeinen@nokia.com> Cc: Imre Deak <imre.deak@nokia.com> Signed-off-by: Tommi Rantala <tt.rantala@gmail.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-06omapfb: Condition mutex acquisitionSergio Aguirre1-8/+14
This fixes a bug introduced by this commit ID: commit 537a1bf059fa312355696fa6db80726e655e7f17 Author: Krzysztof Helt <krzysztof.h1@wp.pl> Date: Tue Jun 30 11:41:29 2009 -0700 fbdev: add mutex for fb_mmap locking In which a mutex was added when changing smem_start and smem_len fields, so the mutex inside the fb_mmap() call is actually used. The problem was that set_fb_fix, which modifies the above 2 fields, was called before and after registering the framebuffer, which when used before registration, lead to a failed attempt to use an uninitialized mutex. Solution: Don't use mutex before framebuffer registration. Signed-off-by: Sergio Aguirre <saaguirre@ti.com> Acked-by: Tomi Valkeinen <tomi.valkeinen@nokia.com> Acked-by: Imre Deak <imre.deak@nokia.com> Tested-by: Cory Maccarrone <darkstar6262@gmail.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-06omap: iovmm: Add missing mutex_unlockDaniel Walker1-1/+2
I was using Coccinelle with the mutex_unlock semantic patch, and it unconvered this problem. It appears to be a valid missing unlock issue. This change should correct it by moving the unlock below the label. This patch is against the mainline kernel. Cc: Julia Lawall <julia@diku.dk> Cc: Hiroshi DOYU <Hiroshi.DOYU@nokia.com> Signed-off-by: Daniel Walker <dwalker@fifo99.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-06omap: iovmm: Fix incorrect spellingHiroshi DOYU1-3/+3
Fix incorrect spelling Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-06omap: SRAM: flush the right address after memcpy in omap_sram_pushye janboe1-1/+2
the original flush operation is to flush the function address which is copied from. But we do not change the function code and it is not necessary to flush it. Signed-off-by: janboe <janboe.ye@gmail.com> Acked-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-06sound: via82xx: move DXS volume controls to PCM interfaceClemens Ladisch1-9/+18
The "VIA DXS" controls are actually volume controls that apply to the four PCM substreams, so we better indicate this connection by moving the controls to the PCM interface. Commit b452e08e73c0e3dbb0be82130217be4b7084299e in 2.6.30 broke the restoring of these volumes by "alsactl restore" that most distributions use; the renaming in this patch cures that regression by preventing alsactl from applying the old, wrong volume levels to the new controls. http://bugzilla.kernel.org/show_bug.cgi?id=14151 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=532613 Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Cc: <stable@kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-10-06perf_event: Provide vmalloc() based mmap() backingPeter Zijlstra5-62/+214
Some architectures such as Sparc, ARM and MIPS (basically everything with flush_dcache_page()) need to deal with dcache aliases by carefully placing pages in both kernel and user maps. These architectures typically have to use vmalloc_user() for this. However, on other architectures, vmalloc() is not needed and has the downsides of being more restricted and slower than regular allocations. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: David Miller <davem@davemloft.net> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jens Axboe <jens.axboe@oracle.com> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1254830228.21044.272.camel@laptop> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-06perf_events: Make ABI definitions available to userspaceChuck Ebbert1-0/+1
Signed-off-by: Chuck Ebbert <cebbert@redhat.com> LKML-Reference: <200910061138.n96BcqkJ004709@int-mx03.intmail.prod.int.phx2.redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-06ALSA: hda - Don't pick up invalid HP pins in alc_subsystem_id()Takashi Iwai1-3/+8
alc_subsystem_id() tries to pick up a headphone pin if not configured, but this caused side-effects as the problem in commit 15870f05e90a365f8022da416e713be0c5024e2f. This patch fixes the driver behavior to pick up invalid HP pins; at least, the pins that are listed as the primary outputs aren't taken any more. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-10-06perf tools: elf_sym__is_function() should accept "zero" sized functionsArnaldo Carvalho de Melo1-2/+1
Asm routines that end up having size equal to zero are not really zero sized, and as now we do kernel_maps__fixup_sym_end, at least for kernel routines this gets fixed. A similar fixup needs to be done for the userspace bits as well, but as this fixup started only because in /proc/kallsyms we don't have the end address nor the function size, it appeared here first. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Mike Galbraith <efault@gmx.de> LKML-Reference: <1254796503-27203-1-git-send-email-acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-06tracing/syscalls: Use long for syscall ret format and field definitionsTom Zanussi1-2/+2
The syscall event definitions use long for the syscall exit ret value, but unsigned long for the same thing in the format and field definitions. Change them all to long. Signed-off-by: Tom Zanussi <tzanussi@gmail.com> Acked-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: rostedt@goodmis.org Cc: lizf@cn.fujitsu.com Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <1254808849-7829-4-git-send-email-tzanussi@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-06perf trace: Update eval_flag() flags array to match interrupt.hTom Zanussi1-4/+5
Add missing BLOCK_IOPOLL_SOFTIRQ entry. Signed-off-by: Tom Zanussi <tzanussi@gmail.com> Acked-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: rostedt@goodmis.org Cc: lizf@cn.fujitsu.com Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <1254808849-7829-3-git-send-email-tzanussi@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-06perf trace: Remove unused code in builtin-trace.cTom Zanussi1-6/+0
And some minor whitespace cleanup. Signed-off-by: Tom Zanussi <tzanussi@gmail.com> Acked-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: rostedt@goodmis.org Cc: lizf@cn.fujitsu.com Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <1254808849-7829-2-git-send-email-tzanussi@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-06connector: Fix incompatible pointer type warningStephen Boyd1-1/+2
Commit 7069331 (connector: Provide the sender's credentials to the callback, 2009-10-02) changed callbacks to take two arguments but missed this one. drivers/connector/cn_proc.c: In function ‘cn_proc_init’: drivers/connector/cn_proc.c:263: warning: passing argument 3 of ‘cn_add_callback’ from incompatible pointer type Signed-off-by: Stephen Boyd <bebarino@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-06ALSA: hda - Add a workaround for ASUS A7KTakashi Iwai1-11/+48
ASUS A7K needs additional GPIO1 bit setup; it has to be cleared. Added a new fixup hook for this laptop so that it works as is. Refernece: Novell bnc#494309 http://bugzilla.novell.com/show_bug.cgi?id=494309 Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-10-06drm/ttm: fix refcounting in ttm global code.Dave Airlie1-1/+1
the global refcount wasn't being increased after the first reference. this caused an oops on unload on a multi-gpu card. Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-10-06drm/fb: add more correct 8/16/24/32 bpp fb support.Dave Airlie8-56/+110
The previous patches had some unwanted side effects, I've fixed the lack of 32bpp working, and fixed up 16bpp so it should also work. this also adds the interface to allow the driver to set a preferred console depth so for example low memory rn50 can set it to 8bpp. It also catches 24bpp on cards that can't do it and forces 32bpp. Tested on r100/r600/i945. Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-10-05omap: Lock DPLL5 at bootRajendra Nayak1-0/+35
Lock DPLL5 at 120MHz at boot. The USBHOST 120MHz f-clock and USBTLL f-clock are the only users of this DPLL, and 120MHz is is the only recommended rate for these clocks. With this patch, the 60 MHz ULPI clock is generated correctly. Tested on an OMAP3430 SDP. Signed-off-by: Rajendra Nayak <rnayak@ti.com> Signed-off-by: Anand Gadiyar <gadiyar@ti.com> Signed-off-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-05omap: Fix incorrect 730 vs 850 detectionTony Lindgren1-23/+14
Commit cd92204924fafbd5c7241dfd12ca3176d542e0c5 added support for omap850. However, the patch accidentally removed the wrong ifdef: # define cpu_is_omap730() 1 # endif #endif +#else +# if defined(CONFIG_ARCH_OMAP850) +# undef cpu_is_omap850 +# define cpu_is_omap850() 1 +# endif +#endif ... void omap2_check_revision(void); #endif /* defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) */ - -#endif Instead of removing removing the #endif at the end of the file, the #endif before #else should have been removed. But we cannot have multiple #else statements as pointed out by Alistair Buxton <a.j.buxton@gmail.com>. So the fix is to: - remove the non-multi-omap special handling, as we need to detect between omap730 and omap850 anyways. - add the missing #endif back to the end of the file Reported-by: Sanjeev Premi <premi@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-05iSCSI/iBFT: use proper address translationJan Beulich2-3/+3
In virtual environments (namely, Xen Dom0) virt <-> phys and virt <-> isa-bus translations cannot be freely interchanged (and even outside such environments it is not really correct to do so). When looking at memory below 1M, the latter translations should always be used. iscsi_ibft_find.c part from: Martin Wilck <martin.wilck@ts.fujitsu.com>. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Peter Jones <pjones@redhat.com> Signed-off-by: Konrad Rzeszutek Wilk <ketuzsezs@darnok.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-10-05OMAP3: PM: introduce a new powerdomain walk helperArtem Bityutskiy3-14/+31
The 'pwrdm_for_each()' function walks powerdomains with a spinlock locked, so the the callbacks cannot do anything which may sleep. This patch introduces a 'pwrdm_for_each_nolock()' helper which does the same, but without the spinlock locked. This fixes the following lockdep warning: [ 0.000000] WARNING: at kernel/lockdep.c:2460 lockdep_trace_alloc+0xac/0xec() [ 0.000000] Modules linked in: (unwind_backtrace+0x0/0xdc) from [<c0045464>] (warn_slowpath_common+0x48/0x60) (warn_slowpath_common+0x48/0x60) from [<c0067dd4>] (lockdep_trace_alloc+0xac/0xec) (lockdep_trace_alloc+0xac/0xec) from [<c009da14>] (kmem_cache_alloc+0x1c/0xd0) (kmem_cache_alloc+0x1c/0xd0) from [<c00b21d8>] (d_alloc+0x1c/0x1a4) (d_alloc+0x1c/0x1a4) from [<c00a887c>] (__lookup_hash+0xd8/0x118) (__lookup_hash+0xd8/0x118) from [<c00a9f20>] (lookup_one_len+0x84/0x94) (lookup_one_len+0x84/0x94) from [<c010d12c>] (debugfs_create_file+0x8c/0x20c) (debugfs_create_file+0x8c/0x20c) from [<c010d320>] (debugfs_create_dir+0x1c/0x20) (debugfs_create_dir+0x1c/0x20) from [<c000e8cc>] (pwrdms_setup+0x60/0x90) (pwrdms_setup+0x60/0x90) from [<c002e010>] (pwrdm_for_each+0x30/0x80) (pwrdm_for_each+0x30/0x80) from [<c000e79c>] (pm_dbg_init+0x7c/0x14c) (pm_dbg_init+0x7c/0x14c) from [<c00232b4>] (do_one_initcall+0x5c/0x1b8) (do_one_initcall+0x5c/0x1b8) from [<c00083f8>] (kernel_init+0x90/0x10c) (kernel_init+0x90/0x10c) from [<c00242c4>] (kernel_thread_exit+0x0/0x8) Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2009-10-05OMAP3: PM: Enable GPIO module-level wakeupsKevin Hilman1-0/+10
Currently, only GPIOs in the wakeup domain (GPIOs in bank 0) are enabled as wakups. This patch also enables GPIOs in the PER powerdomain (banks 2-6) to be used as possible wakeup sources. In addition, this patch ensures that all GPIO wakeups can wakeup the MPU using the PM_MPUGRPSEL_<pwrdm> registers. NOTE: this doesn't enable the individual GPIOs as wakeups, this simply enables the per-bank wakeups at the powerdomain level. This problem was discovered by Mike Chan when preventing the CORE powerdomain from going into retention/off. When CORE was allowed to hit retention, GPIO wakeups via IO pad were working fine, but when CORE remained on, GPIO module-level wakeups were not working properly. To test, prevent CORE from going inactive/retention/off, thus preventing the IO chain from being armed: # echo 3 > /debug/pm_debug/core_pwrdm/suspend This ensures that GPIO wakeups happen via module-level wakeups and not via IO pad. Tested on 3430SDP using the touchscreen GPIO (gpio 2, in WKUP) Tested on Zoom2 using the QUART interrup GPIO (gpio 102, in PER) Also, c.f. OMAP PM wiki for troubleshooting GPIO wakeup issues: http://elinux.org/OMAP_Power_Management Reported-by: Mike Chan <mikechan@google.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2009-10-05OMAP3: PM: USBHOST: clear wakeup events on both hostsVikram Pandita1-3/+10
USBHOST module has 2 fclocks (for HOST1 and HOST2), only one iclock and only a single bit in the WKST register to indicate a wakeup event. Because of the single WKST bit, we cannot know whether a wakeup event was on HOST1 or HOST2, so enable both fclocks before clearing the wakeup event to ensure both hosts can properly clear the event. Signed-off-by: Vikram Pandita <vikram.pandita@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2009-10-05OMAP3: PM: PRCM interrupt: only handle selected PRCM interruptsPaul Walmsley1-9/+37
Clearing wakeup sources is now only done when the PRM indicates a wakeup source interrupt. Since we don't handle any other types of PRCM interrupts right now, warn if we get any other type of PRCM interrupt. Either code needs to be added to the PRCM interrupt handler to react to these, or these other interrupts should be masked off at init. Updated after Jon Hunter's PRCM IRQ rework by Kevin Hilman. Signed-off-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2009-10-05OMAP3: PM: PRCM interrupt: check MPUGRPSEL registerPaul Walmsley1-0/+3
PM_WKST register contents should be ANDed with the contents of the MPUGRPSEL registers. Otherwise the MPU PRCM interrupt handler could wind up clearing wakeup events meant for the IVA PRCM interrupt handler. A future revision to this code should be to read a cached version of MPUGRPSEL from the powerdomain code, since PRM reads are relatively slow. Updated after Jon Hunter's PRCM IRQ change by Kevin Hilman Signed-off-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2009-10-05OMAP3: PM: Prevent hang in prcm_interrupt_handlerJon Hunter1-83/+60
There are two scenarios where a race condition could result in a hang in the prcm_interrupt handler. These are: 1). Waiting for PRM_IRQSTATUS_MPU register to clear. Bit 0 of the PRM_IRQSTATUS_MPU register indicates that a wake-up event is pending for the MPU. This bit can only be cleared if the all the wake-up events latched in the various PM_WKST_x registers have been cleared. If a wake-up event occurred during the processing of the prcm interrupt handler, after the corresponding PM_WKST_x register was checked but before the PRM_IRQSTATUS_MPU was cleared, then the CPU would be stuck forever waiting for bit 0 in PRM_IRQSTATUS_MPU to be cleared. 2). Waiting for the PM_WKST_x register to clear. Some power domains have more than one wake-up source. The PM_WKST_x registers indicate the source of a wake-up event and need to be cleared after a wake-up event occurs. When the PM_WKST_x registers are read and before they are cleared, it is possible that another wake-up event could occur causing another bit to be set in one of the PM_WKST_x registers. If this did occur after reading a PM_WKST_x register then the CPU would miss this event and get stuck forever in a loop waiting for that PM_WKST_x register to clear. This patch address the above race conditions that would result in a hang. Signed-off-by: Jon Hunter <jon-hunter@ti.com> Reviewed-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2009-10-05microblaze: Clear sticky FSR register after saving it to func parametrMichal Simek2-1/+3
Previous patch d63678d607d0e37ec7abe5ceb545d7e8aab956a4 clear it for noMMU kernel. This one do it for MMU. Correct noMMU version Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-10-05microblaze: UMS is used only for MMU kernelMichal Simek1-0/+2
Signed-off-by: Michal Simek <monstr@monstr.eu>
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