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2011-01-25ALSA: azt3328 - fix broken AZF_FMT_XLATE macroAndreas Mohr1-22/+16
Cleanly revert to non-macro implementation of snd_azf3328_codec_setfmt(), to fix last-minute functionality breakage induced by following checkpatch.pl recommendations without giving them their due full share of thought ("revolting computer, ensuing PEBKAC"). I would like to thank Jiri Slaby for his very timely (in -rc1 even) and unexpected (uncommon hardware) "recognition of the dangerous situation" due to his very commendable static parser use. :) Reported-by: Jiri Slaby <[email protected]> Signed-off-by: Andreas Mohr <[email protected]> Signed-off-by: Takashi Iwai <[email protected]>
2011-01-25mailmap: Add an entry for Axel Lin.Paul Mundt1-0/+1
Not all of Axel's patches have used a consistent casing, so fix it up here. Signed-off-by: Paul Mundt <[email protected]>
2011-01-25video: fix some comments in drivers/video/console/vgacon.cAmerigo Wang1-5/+1
Now vgacon_scrollback_startup() uses slab, not bootmem, the comment above it is obsolete, so does __init_refok. Signed-off-by: WANG Cong <[email protected]> Signed-off-by: Paul Mundt <[email protected]>
2011-01-25drivers/video/bf537-lq035.c: Add missing IS_ERR testJulia Lawall1-25/+33
lcd_device_register may return ERR_PTR, so a check is added for this value before the dereference. All of the other changes reorganize the error handling code in this function to avoid duplicating all of it in the added case. In the original code, in one case, the global variable fb_buffer was set to NULL in error code that appears after this variable is initialized. This is done now in all error handling code that has this property. The semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r@ identifier f; @@ f(...) { ... return ERR_PTR(...); } @@ identifier r.f, fld; expression x; statement S1,S2; @@ x = f(...) ... when != IS_ERR(x) ( if (IS_ERR(x) ||...) S1 else S2 | *x->fld ) // </smpl> Signed-off-by: Julia Lawall <[email protected]> Acked-by: Mike Frysinger <[email protected]> Signed-off-by: Paul Mundt <[email protected]>
2011-01-25video: pxa168fb: remove a redundant pxa168fb_check_var callaxel lin1-5/+1
Current implementation calls pxa168fb_check_var twice in pxa168fb_probe. Signed-off-by: Axel Lin <[email protected]> Signed-off-by: Paul Mundt <[email protected]>
2011-01-25video: da8xx-fb: fix fb_probe error pathaxel lin1-1/+2
Current implementation puts CONFIG_CPU_FREQ at wrong place, CONFIG_CPU_FREQ is for lcd_da8xx_cpufreq_deregister not for unregister_framebuffer. Signed-off-by: Axel Lin <[email protected]> Signed-off-by: Paul Mundt <[email protected]>
2011-01-25sh: Fix build of sh7750 base boardsNobuhiro Iwamatsu1-3/+3
Renamed platform_register_device to platform_device_register. Signed-off-by: Nobuhiro Iwamatsu <[email protected]> Signed-off-by: Paul Mundt <[email protected]>
2011-01-24net: clear heap allocation for ethtool_get_regs()Eugene Teo1-1/+1
There is a conflict between commit b00916b1 and a77f5db3. This patch resolves the conflict by clearing the heap allocation in ethtool_get_regs(). Cc: [email protected] Signed-off-by: Eugene Teo <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-01-25Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6Linus Torvalds3-3/+43
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6: Make CIFS mount work in a container. CIFS: Remove pointless variable assignment in cifs_dfs_do_automount()
2011-01-25drm/nvc0/grctx: correct an off-by-oneBen Skeggs1-1/+1
Signed-off-by: Ben Skeggs <[email protected]>
2011-01-25drm/nv50: Fix race with PFIFO during PGRAPH context destruction.Francisco Jerez1-0/+3
Reported-by: Xavier Chantry <[email protected]> Signed-off-by: Francisco Jerez <[email protected]> Signed-off-by: Ben Skeggs <[email protected]>
2011-01-25drm/nouveau: Workaround incorrect DCB entry on a GeForce3 Ti 200.Francisco Jerez1-0/+15
Fixes the DVI-D output on that board (fdo bug 32645). Reported-by: Bryan Quigley <[email protected]> Signed-off-by: Francisco Jerez <[email protected]> Signed-off-by: Ben Skeggs <[email protected]>
2011-01-25drm/nvc0: implement irq handler for whatever's at 0x14xxxxBen Skeggs1-0/+19
This is just barely enough to stop a never-ending IRQ storm that can be triggered by our 3D driver. We have no idea what this engine is.. Signed-off-by: Ben Skeggs <[email protected]>
2011-01-25drm/nvc0: fix incorrect TPC register setupBen Skeggs1-2/+2
Was hitting TPC+1's regs by accident, oops. Reported-by: Christoph Bumiller <[email protected]> Signed-off-by: Ben Skeggs <[email protected]>
2011-01-25drm/nouveau: probe for adt7473 before f75375Ben Skeggs1-1/+1
There's a reported case where probing for f75375 causes the system to hang completely, in this case there's an adt7473 at the same i2c address. Signed-off-by: Ben Skeggs <[email protected]>
2011-01-25drm/nouveau: remove dead function definitionBen Skeggs1-3/+0
Signed-off-by: Ben Skeggs <[email protected]>
2011-01-25Merge branch 'for-38-rc3' of git://codeaurora.org/quic/kernel/davidb/linux-msmLinus Torvalds1-30/+22
* 'for-38-rc3' of git://codeaurora.org/quic/kernel/davidb/linux-msm: drivers: mmc: msm: remove clock disable in probe mmc: msm: fix dma usage not to use internal APIs
2011-01-25Merge branch 'drm-fixes' of ↵Linus Torvalds24-95/+203
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: add new radeon_info ioctl query for clock crystal freq drm/i915: Prevent uninitialised reads during error state capture drm/i915: Use consistent mappings for OpRegion between ACPI and i915 drm/i915: Handle the no-interrupts case for UMS by polling drm/i915: Disable high-precision vblank timestamping for UMS drm/i915: Increase the amount of defense before computing vblank timestamps drm/i915,agp/intel: Do not clear stolen entries drm/radeon/kms: simplify atom adjust pll setup drm/radeon/kms: match r6xx/r7xx/evergreen asic_reset with previous asics drm/radeon/kms: make the mac rv630 quirk generic drm/radeon/kms: fix a spelling error in an error message drm/radeon/kms: Initialize pageflip spinlocks. drm/i915: Recognise non-VGA display devices drm/i915: Fix use of invalid array size for ring->sync_seqno drm/i915/ringbuffer: Fix use of stale HEAD position whilst polling for space drm/i915: Don't kick-off hangcheck after a DRI interrupt drm/i915: Add dependency on CONFIG_TMPFS drm/i915: Initialise ring vfuncs for old DRI paths drm/i915: make the blitter report buffer modifications to the FBC unit drm/i915: set more FBC chicken bits
2011-01-24ipv6: Always clone offlink routes.David S. Miller1-8/+1
Do not handle PMTU vs. route lookup creation any differently wrt. offlink routes, always clone them. Reported-by: PK <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-01-24dcbnl: make get_app handling symmetric for IEEE and CEE DCBxJohn Fastabend1-2/+11
The IEEE get/set app handlers use generic routines and do not require the net_device to implement the dcbnl_ops routines. This patch makes it symmetric so user space and drivers do not have to handle the CEE version and IEEE DCBx versions differently. Signed-off-by: John Fastabend <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-01-24Merge branch 'can/at91_can-for-net-2.6' of ↵David S. Miller2-26/+137
git://git.pengutronix.de/git/mkl/linux-2.6
2011-01-25Merge branch 'drm-intel-fixes-2' of ↵Dave Airlie38-108/+350
ssh://master.kernel.org/pub/scm/linux/kernel/git/ickle/drm-intel into drm-fixes * 'drm-intel-fixes-2' of ssh://master.kernel.org/pub/scm/linux/kernel/git/ickle/drm-intel: (30 commits) drm/i915: Prevent uninitialised reads during error state capture drm/i915: Use consistent mappings for OpRegion between ACPI and i915 drm/i915: Handle the no-interrupts case for UMS by polling drm/i915: Disable high-precision vblank timestamping for UMS drm/i915: Increase the amount of defense before computing vblank timestamps drm/i915,agp/intel: Do not clear stolen entries Remove MAYBE_BUILD_BUG_ON BUILD_BUG_ON: make it handle more cases module: fix missing semicolons in MODULE macro usage param: add null statement to compiled-in module params module: fix linker error for MODULE_VERSION when !MODULE and CONFIG_SYSFS=n module: show version information for built-in modules in sysfs selinux: return -ENOMEM when memory allocation fails tpm: fix panic caused by "tpm: Autodetect itpm devices" TPM: Long default timeout fix trusted keys: Fix a memory leak in trusted_update(). keys: add trusted and encrypted maintainers encrypted-keys: rename encrypted_defined files to encrypted trusted-keys: rename trusted_defined files to trusted drm/i915: Recognise non-VGA display devices ...
2011-01-24tcp: fix bug in listening_get_next()Eric Dumazet1-1/+0
commit a8b690f98baf9fb19 (tcp: Fix slowness in read /proc/net/tcp) introduced a bug in handling of SYN_RECV sockets. st->offset represents number of sockets found since beginning of listening_hash[st->bucket]. We should not reset st->offset when iterating through syn_table[st->sbucket], or else if more than ~25 sockets (if PAGE_SIZE=4096) are in SYN_RECV state, we exit from listening_get_next() with a too small st->offset Next time we enter tcp_seek_last_pos(), we are not able to seek past already found sockets. Reported-by: PK <[email protected]> CC: Tom Herbert <[email protected]> Signed-off-by: Eric Dumazet <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-01-25drm/radeon/kms: add new radeon_info ioctl query for clock crystal freqAlex Deucher3-1/+6
Needed for timer queries in the 3D driver. Signed-off-by: Alex Deucher <[email protected]> Signed-off-by: Dave Airlie <[email protected]>
2011-01-24inetpeer: Use correct AVL tree base pointer in inet_getpeer().David S. Miller1-1/+1
Family was hard-coded to AF_INET but should be daddr->family. This fixes crashes when unlinking ipv6 peer entries, since the unlink code was looking up the base pointer properly. Reported-by: Eric Dumazet <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-01-24GRO: fix merging a paged skb after non-paged skbsMichal Schmidt1-2/+6
Suppose that several linear skbs of the same flow were received by GRO. They were thus merged into one skb with a frag_list. Then a new skb of the same flow arrives, but it is a paged skb with data starting in its frags[]. Before adding the skb to the frag_list skb_gro_receive() will of course adjust the skb to throw away the headers. It correctly modifies the page_offset and size of the frag, but it leaves incorrect information in the skb: ->data_len is not decreased at all. ->len is decreased only by headlen, as if no change were done to the frag. Later in a receiving process this causes skb_copy_datagram_iovec() to return -EFAULT and this is seen in userspace as the result of the recv() syscall. In practice the bug can be reproduced with the sfc driver. By default the driver uses an adaptive scheme when it switches between using napi_gro_receive() (with skbs) and napi_gro_frags() (with pages). The bug is reproduced when under rx load with enough successful GRO merging the driver decides to switch from the former to the latter. Manual control is also possible, so reproducing this is easy with netcat: - on machine1 (with sfc): nc -l 12345 > /dev/null - on machine2: nc machine1 12345 < /dev/zero - on machine1: echo 1 > /sys/module/sfc/parameters/rx_alloc_method # use skbs echo 2 > /sys/module/sfc/parameters/rx_alloc_method # use pages - See that nc has quit suddenly. [v2: Modified by Eric Dumazet to avoid advancing skb->data past the end and to use a temporary variable.] Signed-off-by: Michal Schmidt <[email protected]> Acked-by: Eric Dumazet <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-01-24x86-64: Don't use pointer to out-of-scope variable in dump_trace()Jesper Juhl1-1/+1
In arch/x86/kernel/dumpstack_64.c::dump_trace() we have this code: ... if (!stack) { unsigned long dummy; stack = &dummy; if (task && task != current) stack = (unsigned long *)task->thread.sp; } bp = stack_frame(task, regs); /* * Print function call entries in all stacks, starting at the * current stack address. If the stacks consist of nested * exceptions */ tinfo = task_thread_info(task); for (;;) { char *id; unsigned long *estack_end; estack_end = in_exception_stack(cpu, (unsigned long)stack, &used, &id); ... You'll notice that we assign to 'stack' the address of the variable 'dummy' which is only in-scope inside the 'if (!stack)'. So when we later access stack (at the end of the above, and assuming we did not take the 'if (task && task != current)' branch) we'll be using the address of a variable that is no longer in scope. I believe this patch is the proper fix, but I freely admit that I'm not 100% certain. Signed-off-by: Jesper Juhl <[email protected]> LKML-Reference: <[email protected]> Signed-off-by: H. Peter Anvin <[email protected]>
2011-01-24Merge branch 'master' of ↵David S. Miller4863-112016/+259692
master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
2011-01-24net: arp_ioctl() must hold RTNLEric Dumazet2-7/+7
Commit 941666c2e3e0 "net: RCU conversion of dev_getbyhwaddr() and arp_ioctl()" introduced a regression, reported by Jamie Heilman. "arp -Ds 192.168.2.41 eth0 pub" triggered the ASSERT_RTNL() assert in pneigh_lookup() Removing RTNL requirement from arp_ioctl() was a mistake, just revert that part. Reported-by: Jamie Heilman <[email protected]> Signed-off-by: Eric Dumazet <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-01-25staging: r8712u: Add new device IDsAxel Köllhofer1-32/+113
This patch adds several new device ids to the r8712u staging driver. The new ids were retrieved from latest vendor driver (v2.6.6.0.20101111) downloadable from www.realtek.com.tw Signed-off-by: Axel Koellhofer <[email protected]> Signed-off-by: Larry Finger <[email protected]> Cc: Stable <[email protected]> [2.6.37] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2011-01-25fix a shutdown regression in intel_idleShaohua Li1-6/+2
Fix a shutdown regression caused by 2a2d31c8dc6f ("intel_idle: open broadcast clock event"). The clockevent framework can automatically shutdown broadcast timers for hotremove CPUs. And we get a shutdown regression when we shutdown broadcast timer for hot remove CPU, so just delete some code. Also fix some section mismatch. Reported-by: Ari Savolainen <[email protected]> Signed-off-by: Shaohua Li <[email protected]> Tested-by: Linus Torvalds <[email protected]> Cc: [email protected] Signed-off-by: Linus Torvalds <[email protected]>
2011-01-25Merge branch 'omap-fixes-for-linus' of ↵Linus Torvalds15-51/+184
git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6 * 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6: omap: DMA: clear interrupt status correctly OMAP3: Devkit8000: Fix tps65930 pullup/pulldown configuration arm: omap3: cm-t3517: minor comment fix arm: omap3: cm-t3517: rtc fix omap1: Fix sched_clock implementation when both MPU timer and 32K timer are used omap1: Fix booting for 15xx and 730 with omap1_defconfig omap1: Fix sched_clock for the MPU timer OMAP: PRCM: remove duplicated headers OMAP4: clockdomain: bypass unimplemented wake-up dependency functions on OMAP4 OMAP: counter_32k: init clocksource as part of machine timer init
2011-01-25Merge branch 'perf-fixes-for-linus' of ↵Linus Torvalds28-121/+164
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: perf tools: Fix time function double declaration with glibc perf tools: Fix build by checking if extra warnings are supported perf tools: Fix build when using gcc 3.4.6 perf tools: Add missing header, fixes build perf tools: Fix 64 bit integer format strings perf test: Fix build on older glibcs perf: perf_event_exit_task_context: s/rcu_dereference/rcu_dereference_raw/ perf test: Use cpu_map->[cpu] when setting affinity perf symbols: Fix annotation of thumb code perf: Annotate cpuctx->ctx.mutex to avoid a lockdep splat powerpc, perf: Fix frequency calculation for overflowing counters (FSL version) perf: Fix perf_event_init_task()/perf_event_free_task() interaction perf: Fix find_get_context() vs perf_event_exit_task() race
2011-01-25Merge branch 'timers-fixes-for-linus' of ↵Linus Torvalds5-44/+46
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: RTC: Remove Kconfig symbol for UIE emulation RTC: Properly handle rtc_read_alarm error propagation and fix bug RTC: Propagate error handling via rtc_timer_enqueue properly acpi_pm: Clear pmtmr_ioport if acpi_pm initialization fails rtc: Cleanup removed UIE emulation declaration hrtimers: Notify hrtimer users of switches to NOHZ mode
2011-01-25Merge branch 'sched-fixes-for-linus' of ↵Linus Torvalds1-25/+53
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: sched: Fix poor interactivity on UP systems due to group scheduler nice tune bug
2011-01-25Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds7-44/+11
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: Fix jump label with RO/NX module protection crash x86, hotplug: Fix powersavings with offlined cores on AMD x86, mcheck, therm_throt.c: Export symbol platform_thermal_notify to allow coretemp to handler intr x86: Use asm-generic/cacheflush.h x86: Update CPU cache attributes table descriptors
2011-01-24drm/i915: Prevent uninitialised reads during error state captureChris Wilson1-0/+2
error_bo and pinned_bo could be used uninitialised if there were no active buffers. Caught by kmemcheck. Signed-off-by: Chris Wilson <[email protected]>
2011-01-24drm/i915: Use consistent mappings for OpRegion between ACPI and i915Michael Karcher1-1/+2
The opregion is a shared memory region between ACPI and the graphics driver. As the ACPI mapping has been changed to cachable in commit 6d5bbf00d251cc73223a71422d69e069dc2e0b8d, mapping the intel opregion non-cachable now fails. As no bus-master hardware is involved in the opregion, cachable map should do no harm. Tested on a Fujitsu Lifebook P8010. Signed-off-by: Michael Karcher <[email protected]> [ickle: convert to acpi_os_ioremap for consistency] Signed-off-by: Chris Wilson <[email protected]>
2011-01-24Merge remote branch 'linus/master' into drm-intel-fixesChris Wilson1096-8120/+11942
Merge with Linus to resolve conflicting fixes for the reusing the stale HEAD value during intel_ring_wait(). Conflicts: drivers/gpu/drm/i915/intel_ringbuffer.c
2011-01-24drm/i915: Handle the no-interrupts case for UMS by pollingChris Wilson1-2/+2
If the driver calls into the kernel to wait for a breadcrumb to pass, but hasn't enabled interrupts, fallback to polling the breadcrumb value. Reported-by: Chris Clayton <[email protected]> Tested-by: Chris Clayton <[email protected]> Signed-off-by: Chris Wilson <[email protected]>
2011-01-24drm/i915: Disable high-precision vblank timestamping for UMSChris Wilson1-0/+3
We only have sufficient information for accurate (sub-frame) timestamping when the modesetting is under our control. Reported-by: Chris Clayton <[email protected]> Tested-by: Chris Clayton <[email protected]> Reviewed-by: Mario Kleiner <[email protected]> Signed-off-by: Chris Wilson <[email protected]>
2011-01-24drm/i915: Increase the amount of defense before computing vblank timestampsChris Wilson1-7/+18
Reported-by: Chris Clayton <[email protected]> Tested-by: Chris Clayton <[email protected]> Signed-off-by: Chris Wilson <[email protected]>
2011-01-24drm/i915,agp/intel: Do not clear stolen entriesChris Wilson4-14/+24
We can only utilize the stolen portion of the GTT if we are in sole charge of the hardware. This is only true if using GEM and KMS, otherwise VESA continues to access stolen memory. Reported-by: Arnd Bergmann <[email protected]> Reported-by: Frederic Weisbecker <[email protected]> Tested-by: Jiri Olsa <[email protected]> Tested-by: Frederic Weisbecker <[email protected]> Cc: Daniel Vetter <[email protected]> Signed-off-by: Chris Wilson <[email protected]>
2011-01-24Input: wacom - add 2 Bamboo Pen and touch modelsPing Cheng1-0/+6
Reported-by: David Foley <[email protected]> Signed-off-by: Ping Cheng <[email protected]> Signed-off-by: Dmitry Torokhov <[email protected]>
2011-01-24Input: sysrq - ensure sysrq_enabled and __sysrq_enabled are consistentAndy Whitcroft3-2/+6
Currently sysrq_enabled and __sysrq_enabled are initialised separately and inconsistently, leading to sysrq being actually enabled by reported as not enabled in sysfs. The first change to the sysfs configurable synchronises these two: static int __read_mostly sysrq_enabled = 1; static int __sysrq_enabled; Add a common define to carry the default for these preventing them becoming out of sync again. Default this to 1 to mirror previous behaviour. Signed-off-by: Andy Whitcroft <[email protected]> Cc: [email protected] Signed-off-by: Dmitry Torokhov <[email protected]>
2011-01-24ARM: 6632/3: mmci: stop using the blockend interruptsLinus Walleij2-82/+21
Implement a suggestion from Russell to drop the use of blockend interrupts altogether and instead rely on the data counter. Tested with error-free cards on U300, U8500 and RealView PB1176. Signed-off-by: Ulf Hansson <[email protected]> Signed-off-by: Linus Walleij <[email protected]> Signed-off-by: Russell King <[email protected]>
2011-01-24can: at91_can: make can_id of mailbox 0 configurableMarc Kleine-Budde2-7/+108
Due to a chip bug (errata 50.2.6.3 & 50.3.5.3 in "AT91SAM9263 Preliminary 6249H-ATARM-27-Jul-09") the contents of mailbox 0 may be send under certain conditions (even if disabled or in rx mode). The workaround in the errata suggests not to use the mailbox and load it with an unused identifier. This patch implements the second part of the workaround. A sysfs entry "mb0_id" is introduced. While the interface is down it can be used to configure the can_id of mailbox 0. The default value id 0x7ff. In order to use an extended can_id add the CAN_EFF_FLAG (0x80000000U) to the can_id. Example: - standard id 0x7ff: echo 0x7ff > /sys/class/net/can0/mb0_id - extended id 0x1fffffff: echo 0x9fffffff > /sys/class/net/can0/mb0_id Signed-off-by: Marc Kleine-Budde <[email protected]> Acked-by: Wolfgang Grandegger <[email protected]> Acked-by: Kurt Van Dijck <[email protected]> For the Documentation-part: Acked-by: Wolfram Sang <[email protected]>
2011-01-24can: at91_can: don't use mailbox 0Marc Kleine-Budde1-12/+20
Due to a chip bug (errata 50.2.6.3 & 50.3.5.3 in "AT91SAM9263 Preliminary 6249H-ATARM-27-Jul-09") the contents of mailbox 0 may be send under certain conditions (even if disabled or in rx mode). The workaround in the errata suggests not to use the mailbox and load it with a unused identifier. This patch implements the first part of the workaround, it updates AT91_MB_RX_NUM and AT91_MB_RX_FIRST (and the inline documentation) so that mailbox 0 stays unused. Signed-off-by: Marc Kleine-Budde <[email protected]> Acked-by: Wolfgang Grandegger <[email protected]> Acked-by: Kurt Van Dijck <[email protected]>
2011-01-24can: at91_can: clean up usage of AT91_MB_RX_FIRST and AT91_MB_RX_NUMMarc Kleine-Budde1-8/+10
This patch cleans up the usage of two macros which specify the mailbox usage. AT91_MB_RX_FIRST and AT91_MB_RX_NUM define the first and the number of RX mailboxes. The current driver uses these variables in an unclean way; assuming that AT91_MB_RX_FIRST is 0; This patch cleans up the usage of these macros, no longer assuming AT91_MB_RX_FIRST == 0. Signed-off-by: Marc Kleine-Budde <[email protected]> Acked-by: Wolfgang Grandegger <[email protected]>
2011-01-24sched: Fix poor interactivity on UP systems due to group scheduler nice tune bugYong Zhang1-25/+53
Michael Witten and Christian Kujau reported that the autogroup scheduling feature hurts interactivity on their UP systems. It turns out that this is an older bug in the group scheduling code, and the wider appeal provided by the autogroup feature exposed it more prominently. When on UP with FAIR_GROUP_SCHED enabled, tune shares only affect tg->shares, but is not reflected in tg->se->load. The reason is that update_cfs_shares() does nothing on UP. So introduce update_cfs_shares() for UP && FAIR_GROUP_SCHED. This issue was found when enable autogroup scheduling was enabled, but it is an older bug that also exists on cgroup.cpu on UP. Reported-and-Tested-by: Michael Witten <[email protected]> Reported-and-Tested-by: Christian Kujau <[email protected]> Signed-off-by: Yong Zhang <[email protected]> Acked-by: Pekka Enberg <[email protected]> Acked-by: Mike Galbraith <[email protected]> Acked-by: Peter Zijlstra <[email protected]> Cc: Linus Torvalds <[email protected]> LKML-Reference: <[email protected]> Signed-off-by: Ingo Molnar <[email protected]>
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