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2010-04-09slab: Generify kernel pointer validationPekka Enberg
As suggested by Linus, introduce a kern_ptr_validate() helper that does some sanity checks to make sure a pointer is a valid kernel pointer. This is a preparational step for fixing SLUB kmem_ptr_validate(). Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Christoph Lameter <cl@linux-foundation.org> Cc: David Rientjes <rientjes@google.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Matt Mackall <mpm@selenic.com> Cc: Nick Piggin <npiggin@suse.de> Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-04-09Revert "memory-hotplug: add 0x prefix to HEX block_size_bytes"Linus Torvalds
This reverts commit ba168fc37dea145deeb8fa9e7e71c748d2e00d74. It changes user-visible sysfs interfaces, and breaks some existing user space applications which apparently rely on the fact that the output does not contain the "0x" prefix. Requested-by: Heiko Carstens <heiko.carstens@de.ibm.com> Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Acked-by: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-04-09Merge branch 'master' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
2010-04-09Merge branches 'cma', 'misc', 'mlx4' and 'nes' into for-linusRoland Dreier
2010-04-09ALSA: hda - Fix initial capture source connections of ALC880/260Takashi Iwai
The widget connections of ADC of ALC880 and ALC2260 aren't initialized, thus it might point to invalid pin. This can be a problem when mode=auto and there is only one input pin. Then user can't change the connection at all. This patch adds the code to initialize the input pin connection of these codecs. Reference: Novell bnc#594363 https://bugzilla.novell.com/show_bug.cgi?id=594363 Signed-off-by: Takashi Iwai <tiwai@suse.de>
2010-04-09ARM: Fix ioremap_cached()/ioremap_wc() for SMP platformsRussell King
Write combining/cached device mappings are not setting the shared bit, which could potentially cause problems on SMP systems since the cache lines won't participate in the cache coherency protocol. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
2010-04-09[S390] Update default configuration.Martin Schwidefsky
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-04-09[S390] nss: add missing .previous statement to asm functionHeiko Carstens
The savesys_ipl_nss asm function is put into the .init.text section however it is missing a ".previous" section which would restore the previous section. Luckily all functions in early.c are init functions so it doesn't matter currently. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-04-09[S390] increase default size of vmalloc areaMartin Schwidefsky
The default size of the vmalloc area is currently 1 GB. The memory resource controller uses about 10 MB of vmalloc space per gigabyte of memory. That turns a system with more than ~100 GB memory unbootable with the default vmalloc size. It costs us nothing to increase the default size to some more adequate value, e.g. 128 GB. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-04-09[S390] s390: disable change bit overrideChristian Borntraeger
commit 6a985c6194017de2c062916ad1cd00dee0302c40 ([S390] s390: use change recording override for kernel mapping) deactivated the change bit recording for the kernel mapping to improve the performance. This works most of the time, but there are cases (e.g. kernel runs in home space, futex atomic compare xcmg) where we modify user memory with the kernel mapping instead of the user mapping. Instead of fixing these cases, this patch just deactivates change bit override to avoid future problems with other kernel code that might use the kernel mapping for user memory. CC: stable@kernel.org Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-04-09[S390] fix io_return critical section cleanupMartin Schwidefsky
If a machine check interrupts the io interrupt handler on one of the instructions between io_return and io_leave the critical section cleanup code will move the return psw to io_work_loop. By doing that the switch from the asynchronous interrupt stack to the process stack is skipped. If e.g. TIF_NEED_RESCHED is set things break because the scheduler is called with the asynchronous interrupts stack. Moving the psw back to io_return instead fixes the problem. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-04-09[S390] sclp_async: potential buffer overflowDan Carpenter
"len" hasn't been properly range checked so we shouldn't use it as an array offset. This can only be written to by root but it would still be annoying to accidentally write more than 3 characters and corrupt your memory. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-04-09[S390] arch/s390/kernel: Add missing unlockJulia Lawall
In the default case the lock is not unlocked. The return is converted to a goto, to share the unlock at the end of the function. A simplified version of the semantic patch that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r exists@ expression E1; identifier f; @@ f (...) { <+... * spin_lock_irq (E1,...); ... when != E1 * return ...; ...+> } // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-04-09ALSA: hda - Fix setup for ALC269vb amic and dmic modelsKailang Yang
Corrected HP and mic pins for ALC269vb amic and dmic models. Signed-off-by: Kailang Yang <kailang@realtek.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2010-04-09ALSA: hda - Fix auto-parser of ALC269vb for HP pin NID 0x21Kailang Yang
ALC269vb has an alternative HP pin 0x21 in addition. Fix the parser to recognize it. Signed-off-by: Kailang Yang <kailang@realtek.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2010-04-09ARM: 6043/1: AT91 slow-clock resume: Don't wait for a disabled PLL to lockAnders Larsen
at91 slow-clock resume: Don't wait for a disabled PLL to lock. We run into this problem with the PLLB on the at91: ohci-at91 disables the PLLB when going to suspend. The slowclock code however tries to do the same: It saves the PLLB register value and when restoring the value during resume, it waits for the PLLB to lock again. However the PLL will never lock and the loop would run into its timeout because the slowclock code just stored and restored an empty register. This fixes the problem by only restoring PLLA/PLLB when they were enabled at suspend time. Cc: Andrew Victor <avictor.za@gmail.com> Signed-off-by: Anders Larsen <al@alarsen.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-04-09cfq-iosched: Fix the incorrect timeslice accounting with forced_dispatchDivyesh Shah
When CFQ dispatches requests forcefully due to a barrier or changing iosched, it runs through all cfqq's dispatching requests and then expires each queue. However, it does not activate a cfqq before flushing its IOs resulting in using stale values for computing slice_used. This patch fixes it by calling activate queue before flushing reuqests from each queue. This is useful mostly for barrier requests because when the iosched is changing it really doesnt matter if we have incorrect accounting since we're going to break down all structures anyway. We also now expire the current timeslice before moving on with the dispatch to accurately account slice used for that cfqq. Signed-off-by: Divyesh Shah<dpshah@google.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2010-04-09Merge remote branch 'nouveau/for-airlied' of ../drm-nouveau-next into drm-linusDave Airlie
* 'nouveau/for-airlied' of ../drm-nouveau-next: (21 commits) drm/nouveau: bail out of auxch transaction if we repeatedly recieve defers drm/nv50: implement gpio set/get routines drm/nv50: parse/use some more de-magiced parts of gpio table entries drm/nouveau: store raw gpio table entry in bios gpio structs drm/nv40: Init some tiling-related PGRAPH state. drm/nv50: Add NVA3 support in ctxprog/ctxvals generator. drm/nv50: another dodgy DP hack drm/nv50: punt hotplug irq handling out to workqueue drm/nv50: preserve an unknown SOR_MODECTRL value for DP encoders drm/nv50: Allow using the NVA3 new compute class. drm/nv50: cleanup properly if PDISPLAY init fails drm/nouveau: fixup the init failure paths some more drm/nv50: fix instmem init on IGPs if stolen mem crosses 4GiB mark drm/nv40: add LVDS table quirk for Dell Latitude D620 drm/nv40: rework lvds table parsing drm/nouveau: detect vram amount once, and save the value drm/nouveau: remove some unused members from drm_nouveau_private drm/nouveau: Make use of TTM busy_placements. drm/nv50: add more 0x100c80 flushy magic drm/nv50: fix fbcon when framebuffer above 4GiB mark ...
2010-04-09drm/nouveau: bail out of auxch transaction if we repeatedly recieve defersBen Skeggs
There's one known case where we never stop recieving DEFER, and loop here forever. Lets not do that.. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-04-09drm/nv50: implement gpio set/get routinesBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-04-09drm/nv50: parse/use some more de-magiced parts of gpio table entriesBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-04-09drm/nouveau: store raw gpio table entry in bios gpio structsBen Skeggs
And use our own version of the GPIO table for the INIT_GPIO opcode. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-04-09drm/nv40: Init some tiling-related PGRAPH state.Francisco Jerez
Fixes garbled 3D on an nv46 card. Reported-by: Francesco Marella <francesco.marella@gmail.com> Signed-off-by: Francisco Jerez <currojerez@riseup.net> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-04-09drm/nv50: Add NVA3 support in ctxprog/ctxvals generator.Marcin Kościelnicki
Signed-off-by: Marcin Kościelnicki <koriakin@0x04.net> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-04-09drm/nv50: another dodgy DP hackBen Skeggs
Allows *some* DP cards to keep working in some corner cases that most people shouldn't hit. I hit it all the time with development, so this can stay for now. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-04-09drm/nv50: punt hotplug irq handling out to workqueueBen Skeggs
On DP outputs we'll likely end up running vbios init tables here, which may sleep. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-04-09drm/nv50: preserve an unknown SOR_MODECTRL value for DP encodersBen Skeggs
This value interacts with some registers we don't currently know how to program properly ourselves. The default of 5 that we were using matches what the VBIOS on early DP cards do, but later ones use 6, which would cause nouveau to program an incorrect mode on these chips. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-04-09drm/nv50: Allow using the NVA3 new compute class.Marcin Kościelnicki
Signed-off-by: Marcin Kościelnicki <koriakin@0x04.net> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-04-09drm/nv50: cleanup properly if PDISPLAY init failsBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-04-09drm/nouveau: fixup the init failure paths some moreBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-04-09drm/nv50: fix instmem init on IGPs if stolen mem crosses 4GiB markBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-04-09drm/nv40: add LVDS table quirk for Dell Latitude D620Ben Skeggs
Should fix: https://bugzilla.redhat.com/show_bug.cgi?id=505132 https://bugzilla.redhat.com/show_bug.cgi?id=543091 https://bugzilla.redhat.com/show_bug.cgi?id=530425 https://bugs.edge.launchpad.net/ubuntu/+source/xserver-xorg-video-nouveau/ +bug/539730 Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-04-09drm/nv40: rework lvds table parsingBen Skeggs
All indications seem to be that the version 0x30 table should be handled the same way as 0x40 (as used on G80), at least for the parts that we currently try use. This commit cleans up the parsing to make it clearer about what we're actually trying to achieve, and unifies the 0x30/0x40 parsing. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-04-09drm/nouveau: detect vram amount once, and save the valueBen Skeggs
As opposed to repeatedly reading the amount back from the GPU every time we need to know the VRAM size. We should now fail to load gracefully on detecting no VRAM, rather than something potentially messy happening. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-04-09drm/nouveau: remove some unused members from drm_nouveau_privateBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-04-09drm/nouveau: Make use of TTM busy_placements.Francisco Jerez
Previously we were filling it the same as "placements", but in some cases there're valid alternatives that we were ignoring completely. Keeping a back-up memory type helps on several low-mem situations. Signed-off-by: Francisco Jerez <currojerez@riseup.net> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-04-09drm/nv50: add more 0x100c80 flushy magicBen Skeggs
Fixes the !vbo_fifo path in the 3D driver on certain chipsets. Still not really any good idea of what exactly the magic achieves, but it makes things work. While we're at it, in the PCIEGART path, flush on unbinding also. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-04-09drm/nv50: fix fbcon when framebuffer above 4GiB markBen Skeggs
This can't actually happen right now, but lets fix it anyway. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-04-09drm/nv50: Fix NEWCTX_DONE flag numberMarcin Kościelnicki
Signed-off-by: Marcin Kościelnicki <koriakin@0x04.net> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-04-08iwlwifi: need check for valid qos packet before freeWey-Yi Guy
For 4965, need to check it is valid qos frame before free, only valid QoS frame has the tid used to free the packets. Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-04-08loop: Update mtime when writing using aopsNikanth Karthikesan
Update mtime when writing to backing filesystem using the address space operations write_begin and write_end. Signed-off-by: Nikanth Karthikesan <knikanth@suse.de> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2010-04-08Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6: not overwriting file_lock structure after GET_LK cifs: Fix a kernel BUG with remote OS/2 server (try #3) [CIFS] initialize nbytes at the beginning of CIFSSMBWrite() [CIFS] Add mmap for direct, nobrl cifs mount types
2010-04-08tcp: Set CHECKSUM_UNNECESSARY in tcp_init_nondata_skbDavid S. Miller
Back in commit 04a0551c87363f100b04d28d7a15a632b70e18e7 ("loopback: Drop obsolete ip_summed setting") we stopped setting CHECKSUM_UNNECESSARY in the loopback xmit. This is because such a setting was a lie since it implies that the checksum field of the packet is properly filled in. Instead what happens normally is that CHECKSUM_PARTIAL is set and skb->csum is calculated as needed. But this was only happening for TCP data packets (via the skb->ip_summed assignment done in tcp_sendmsg()). It doesn't happen for non-data packets like ACKs etc. Fix this by setting skb->ip_summed in the common non-data packet constructor. It already is setting skb->csum to zero. But this reminds us that we still have things like ip_output.c's ip_dev_loopback_xmit() which sets skb->ip_summed to the value CHECKSUM_UNNECESSARY, which Herbert's patch teaches us is not valid. So we'll have to address that at some point too. Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-08udp: fix for unicast RX path optimizationJorge Boncompte [DTI2]
Commits 5051ebd275de672b807c28d93002c2fb0514a3c9 and 5051ebd275de672b807c28d93002c2fb0514a3c9 ("ipv[46]: udp: optimize unicast RX path") broke some programs. After upgrading a L2TP server to 2.6.33 it started to fail, tunnels going up an down, after the 10th tunnel came up. My modified rp-l2tp uses a global unconnected socket bound to (INADDR_ANY, 1701) and one connected socket per tunnel after parameter negotiation. After ten sockets were open and due to mixed parameters to udp[46]_lib_lookup2() kernel started to drop packets. Signed-off-by: Jorge Boncompte [DTI2] <jorge@dti2.net> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-08Merge branch 'upstream-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev * 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: libata: Fix accesses at LBA28 boundary (old bug, but nasty) (v2)
2010-04-08libata: Fix accesses at LBA28 boundary (old bug, but nasty) (v2)Mark Lord
Most drives from Seagate, Hitachi, and possibly other brands, do not allow LBA28 access to sector number 0x0fffffff (2^28 - 1). So instead use LBA48 for such accesses. This bug could bite a lot of systems, especially when the user has taken care to align partitions to 4KB boundaries. On misaligned systems, it is less likely to be encountered, since a 4KB read would end at 0x10000000 rather than at 0x0fffffff. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-04-08Merge branch 'sched-fixes-for-linus' of ↵Linus Torvalds
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 sched_getaffinity()
2010-04-08Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide-2.6: ide: Fix IDE taskfile with cfq scheduler ide: Must hold queue lock when requeueing ide: Requeue request after DMA timeout
2010-04-08Merge branch 'release' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: ACPI / PM: Move ACPI video resume to a PM notifier ACPI: Reduce ACPI resource conflict message to KERN_WARNING, printk cleanup ACPI: battery drivers should call power_supply_changed() ACPI: battery: Fix CONFIG_ACPI_SYSFS_POWER=n PNPACPI: truncate _CRS windows with _LEN > _MAX - _MIN + 1 ACPI: Don't send KEY_UNKNOWN for random video notifications ACPI: NUMA: map pxms to low node ids ACPI: use _HID when supplied by root-level devices ACPI / ACPICA: Do not check reference counters in acpi_ev_enable_gpe() ACPI: fixes a false alarm from lockdep ACPI dock: support multiple ACPI dock devices ACPI: EC: Allow multibyte access to EC
2010-04-08ASoC: imx-ssi: Use a hrtimer in FIQ modeSascha Hauer
Using a regular timer results in poll times < 1 jiffie with small buffers, so we loaded the timer with the actual jiffie value. We can be more accurate using a hrtimer. Also, we have to call snd_pcm_period_elapsed after playing period_bytes and not runtime->period_size (which is in samples and not in bytes). Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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