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2009-07-19x86: Introduce set_desc_base() and set_desc_limit()Akinobu Mita
Rename set_base()/set_limit to set_desc_base()/set_desc_limit() and rewrite them in C. These are naturally introduced by the idea of get_desc_base()/get_desc_limit(). The conversion actually found the bug in apm_32.c: bad_bios_desc is written at run-time, but it is defined const variable. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> LKML-Reference: <20090718151105.GC11294@localhost.localdomain> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-07-19x86: Remove unused patch_espfix_desc()Akinobu Mita
patch_espfix_desc() is not used after commit dc4c2a0aed3b09f6e255bd5c3faa50fe6e0b2ded Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> LKML-Reference: <20090718150955.GB11294@localhost.localdomain> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-07-19x86: Use get_desc_base()Akinobu Mita
Use get_desc_base() to get the base address in desc_struct Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> LKML-Reference: <20090718150853.GA11294@localhost.localdomain> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-07-17Merge branch 'drm-fixes' of ↵Linus Torvalds
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: Move a dereference below a NULL test fb/intelfb: conflict with DRM_I915 and hide by default drm/ttm: fix misplaced parentheses drm/via: Fix vblank IRQ on VIA hardware. drm: drm_gem, check kzalloc retval drm: drm_debugfs, check kmalloc retval drm/radeon: add some missing pci ids
2009-07-17Merge branch 'release' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/fyu/linux-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/fyu/linux-2.6: Revert "Neither asm/types.h nor linux/types.h is required for arch/ia64/include/asm/fpu.h" Add dma_debug_init() for ia64 Fix ia64 compilation IS_ERR and PTE_ERR errors.
2009-07-17Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: x86/pci: insert ioapic resource before assigning unassigned resources
2009-07-17Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: ALSA: riptide - proper handling of pci_register_driver for joystick sound: usb-audio: add workaround for Blue Microphones devices ALSA: hda_intel: more strict alc880_parse_auto_config dig_nid checking ASoC: Fix NULL pointer dereference in __pxa2xx_pcm_hw_free
2009-07-17Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linusLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus: virtio_net: Sync header with qemu virtio-pci: correctly unregister root device on error virtio_blk: ioctl return value fix virtio_blk: don't bounce highmem requests lguest: restrict CPUID to avoid perf counter wrmsr lguest: remove unnecessary forward struct declaration lguest: fix journey
2009-07-17Merge branch 'tracing-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: tracing/function: Fix the return value of ftrace_trace_onoff_callback()
2009-07-17tty_port: Fix return on interrupted useAlan Cox
Whoops.. fortunately not many people use this yet. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-17Revert "Neither asm/types.h nor linux/types.h is required for ↵Aurelien Jarno
arch/ia64/include/asm/fpu.h" asm/fpu.h uses the __IA64_UL macro which is declared in asm/types.h, so this include is really required. Without it, GNU libc fails to build. This reverts commit 2678c07b07ac2076675e5d57653bdf02e9af1950. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Acked-by: Fenghua Yu <fenghua.yu@intel.com>
2009-07-17Add dma_debug_init() for ia64fujita
The commit 9916219579d078c80377dd3988c2cc213536d868 was supposed to add CONFIG_DMA_API_DEBUG support to IA64 however I forgot to add dma_debug_init(). Signed-off-by: fujita <fujita@tulip.osrg.net> Acked-by: Fenghua Yu <fenghua.yu@intel.com>
2009-07-17Fix ia64 compilation IS_ERR and PTE_ERR errors.Fenghua Yu
When building ia64 kernel with CONFIG_XEN_SYS_HYPERVISOR, compiler reports errors: drivers/xen/sys-hypervisor.c: In function ‘uuid_show’: drivers/xen/sys-hypervisor.c:125: error: implicit declaration of function ‘IS_ERR’ drivers/xen/sys-hypervisor.c:126: error: implicit declaration of function ‘PTR_ERR’ This patch fixes the errors. Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Acked-by: Isaku Yamahata <yamahata@valinux.co.jp>
2009-07-17virtio_net: Sync header with qemuAlex Williamson
Qemu added support for a few extra RX modes that Linux doesn't currently make use of. Sync the headers to maintain consistency. Signed-off-by: Alex Williamson <alex.williamson@hp.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2009-07-17virtio-pci: correctly unregister root device on errorMark McLoughlin
If pci_register_driver() fails we're incorrectly unregistering the root device with device_unregister() rather than root_device_unregister(). Reported-by: Don Zickus <dzickus@redhat.com> Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2009-07-17virtio_blk: ioctl return value fixChristoph Hellwig
Block driver ioctl methods must return ENOTTY and not -ENOIOCTLCMD if they expect the block layer to handle generic ioctls. This triggered a BLKROSET failure in xfsqa #200. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2009-07-17virtio_blk: don't bounce highmem requestsChristoph Hellwig
By default a block driver bounces highmem requests, but virtio-blk is perfectly fine with any request that fit into it's 64 bit addressing scheme, mapped in the kernel virtual space or not. Besides improving performance on highmem systems this also makes the reproducible oops in __bounce_end_io go away (but hiding the real cause). Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2009-07-17lguest: restrict CPUID to avoid perf counter wrmsrRusty Russell
Avoid the following: [ 0.012093] WARNING: at arch/x86/kernel/apic/apic.c:249 native_apic_write_dummy+0x2f/0x40() Rather than chase each new cpuid-detected feature, just lie about the highest valid CPUID so this code is never run. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2009-07-17lguest: remove unnecessary forward struct declarationDavide Libenzi
While fixing lg.h to drop the fwd declaration, I noticed there's another one ;) Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2009-07-17lguest: fix journeyMatias Zabaljauregui
fix: "make Guest" was complaining about duplicated G:032 Signed-off-by: Matias Zabaljauregui <zabaljauregui@gmail.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2009-07-16tracing/function: Fix the return value of ftrace_trace_onoff_callback()Xiao Guangrong
ftrace_trace_onoff_callback() will return an error even if we do the right operation, for example: # echo _spin_*:traceon:10 > set_ftrace_filter -bash: echo: write error: Invalid argument # cat set_ftrace_filter #### all functions enabled #### _spin_trylock_bh:traceon:count=10 _spin_unlock_irq:traceon:count=10 _spin_unlock_bh:traceon:count=10 _spin_lock_irq:traceon:count=10 _spin_unlock:traceon:count=10 _spin_trylock:traceon:count=10 _spin_unlock_irqrestore:traceon:count=10 _spin_lock_irqsave:traceon:count=10 _spin_lock_bh:traceon:count=10 _spin_lock:traceon:count=10 We want to set _spin_*:traceon:10 to set_ftrace_filter, it complains with "Invalid argument", but the operation is successful. This is because ftrace_process_regex() returns the number of functions that matched the pattern. If the number is not 0, this value is returned by ftrace_regex_write() whereas we want to return the number of bytes virtually written. Also the file offset pointer is not updated in this case. If the number of matched functions is lower than the number of bytes written by the user, this results to a reprocessing of the string given by the user with a lower size, leading to a malformed ftrace regex and then a -EINVAL returned. So, this patch fixes it by returning 0 if no error occured. The fix also applies on 2.6.30 Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Reviewed-by: Li Zefan <lizf@cn.fujitsu.com> Cc: stable@kernel.org Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
2009-07-16Merge branch 'sched-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/peterz/linux-2.6-sched * 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/peterz/linux-2.6-sched: sched: Fix bug in SCHED_IDLE interaction with group scheduling sched: Fix rt_rq->pushable_tasks initialization in init_rt_rq() sched: Reset sched stats on fork() sched_rt: Fix overload bug on rt group scheduling sched: Documentation/sched-rt-group: Fix style issues & bump version
2009-07-16Merge branch 'timers-fixes-for-linus' of ↵Linus Torvalds
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: timer stats: fix quick check optimization
2009-07-16Merge branch 'merge' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: powerpc: Fix another bug in move of altivec code to vector.S powerpc: Fix booke user_disable_single_step()
2009-07-16n_tty: Fix echo raceAlan Cox
If a tty in N_TTY mode with echo enabled manages to get itself into a state where - echo characters are pending - FASYNC is enabled - tty_write_wakeup is called from either - a device write path (pty) - an IRQ (serial) then it either deadlocks or explodes taking a mutex in the IRQ path. On the serial side it is almost impossible to reproduce because you have to go from a full serial port to a near empty one with echo characters pending. The pty case happens to have become possible to trigger using emacs and ptys, the pty changes having created a scenario which shows up this bug. The code path is n_tty:process_echoes() (takes mutex) tty_io:tty_put_char() pty:pty_write (or serial paths) tty_wakeup (from pty_write or serial IRQ) n_tty_write_wakeup() process_echoes() *KABOOM* Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-16tty: nozomi, fix tty refcounting bugJiri Slaby
Don't forget to drop a tty refererence on fail paths in receive_data(). Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-16vt: drop bootmem/slab memory distinctionJohannes Weiner
Bootmem is not used for the vt screen buffer anymore as slab is now available at the time the console is initialized. Get rid of the now superfluous distinction between slab and bootmem, it's always slab. This also fixes a kmalloc leak which Catalin described thusly: Commit a5f4f52e ("vt: use kzalloc() instead of the bootmem allocator") replaced the alloc_bootmem() with kzalloc() but didn't set vc_kmalloced to 1 and the memory block is later leaked. The corresponding kmemleak trace: unreferenced object 0xdf828000 (size 8192): comm "swapper", pid 0, jiffies 4294937296 backtrace: [<c006d473>] __save_stack_trace+0x17/0x1c [<c000d869>] log_early+0x55/0x84 [<c01cfa4b>] kmemleak_alloc+0x33/0x3c [<c006c013>] __kmalloc+0xd7/0xe4 [<c00108c7>] con_init+0xbf/0x1b8 [<c0010149>] console_init+0x11/0x20 [<c0008797>] start_kernel+0x137/0x1e4 Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Reviewed-by: Pekka Enberg <penberg@cs.helsinki.fi> Tested-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-16drivers/serial/bfin_sport_uart.c: remove wrong and unneeded memsetAndrew Morton
dcb314@hotmail.com notes that this memset has its args reversed. It's unneeded anyway, so remove it. Addresses http://bugzilla.kernel.org/show_bug.cgi?id=13587 Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-16serial: don't add msm_serial's probe function to the driver structUwe Kleine-König
msm_serial_driver is registered using platform_driver_probe which takes care for the probe function itself. So don't pass it in the driver struct, too. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-16tty: fix close/hangup raceAlan Cox
We can get a situation where a hangup occurs during or after a close. In that case the ldisc gets disposed of by the close and the hangup then explodes. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-16Add '-fno-delete-null-pointer-checks' to gcc CFLAGSEugene Teo
Turning on this flag could prevent the compiler from optimising away some "useless" checks for null pointers. Such bugs can sometimes become exploitable at compile time because of the -O2 optimisation. See http://gcc.gnu.org/onlinedocs/gcc-4.1.2/gcc/Optimize-Options.html An example that clearly shows this 'problem' is commit 6bf67672. static void __devexit agnx_pci_remove(struct pci_dev *pdev) { struct ieee80211_hw *dev = pci_get_drvdata(pdev); - struct agnx_priv *priv = dev->priv; + struct agnx_priv *priv; AGNX_TRACE; if (!dev) return; + priv = dev->priv; By reverting this patch, and compile it with and without -fno-delete-null-pointer-checks flag, we can see that the check for dev is compiled away. call printk # - testq %r12, %r12 # dev - je .L94 #, movq %r12, %rdi # dev, Clearly the 'fix' is to stop using dev before it is tested, but building with -fno-delete-null-pointer-checks flag at least makes it harder to abuse. Signed-off-by: Eugene Teo <eugeneteo@kernel.sg> Acked-by: Eric Paris <eparis@redhat.com> Acked-by: Wang Cong <amwang@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-16Revert "ppp: Fix throttling bugs"Linus Torvalds
This reverts commit a6540f731d506d9e82444cf0020e716613d4c46c, as requested by Alan: "... as it was wrong, the pty code is now fixed and the fact this isn't reverted is breaking pptp setups." Requested-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-16Merge branch 'fix/usb-audio' into for-linusTakashi Iwai
* fix/usb-audio: sound: usb-audio: add workaround for Blue Microphones devices
2009-07-16Merge branch 'fix/misc' into for-linusTakashi Iwai
* fix/misc: ALSA: riptide - proper handling of pci_register_driver for joystick
2009-07-16Merge branch 'fix/hda' into for-linusTakashi Iwai
* fix/hda: ALSA: hda_intel: more strict alc880_parse_auto_config dig_nid checking
2009-07-16Merge branch 'fix/asoc' into for-linusTakashi Iwai
* fix/asoc: ASoC: Fix NULL pointer dereference in __pxa2xx_pcm_hw_free
2009-07-15Merge 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: ahci: add device ID for 82801JI sata controller drivers/ata: Move a dereference below a NULL test libata: implement and use HORKAGE_NOSETXFER, take#2 libata: fix follow-up SRST failure path
2009-07-15ALSA: riptide - proper handling of pci_register_driver for joystickJaswinder Singh Rajput
We need to check returning error for pci_register_driver(&joystick_driver) On failure, we should unregister formerly registered audio drivers This also fixed the compiler warning : CC [M] sound/pci/riptide/riptide.o sound/pci/riptide/riptide.c: In function ‘alsa_card_riptide_init’: sound/pci/riptide/riptide.c:2200: warning: ignoring return value of ‘__pci_register_driver’, declared with attribute warn_unused_result Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-07-15sound: usb-audio: add workaround for Blue Microphones devicesClemens Ladisch
Blue Microphones USB devices have an alternate setting that sends two channels of data to the computer. Unfortunately, the descriptors of that altsetting have a wrong channel setting, which means that any recorded data from such a device has twice the sample rate from what would be expected. This patch adds a workaround to ignore that altsetting. Since these devices have only one actual channel, no data is lost. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Cc: <stable@kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-07-15powerpc: Fix another bug in move of altivec code to vector.SAndreas Schwab
When moving load_up_altivec to vector.S a typo in a comment caused a thinko setting the wrong variable. Signed-off-by: Andreas Schwab <schwab@linux-m68k.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-07-15powerpc: Fix booke user_disable_single_step()Dave Kleikamp
On booke processors, gdb is seeing spurious SIGTRAPs when setting a watchpoint. user_disable_single_step() simply quits when the DAC is non-zero. It should be clearing the DBCR0_IC and DBCR0_BT bits from the dbcr0 register and TIF_SINGLESTEP from the thread flag. Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-07-15drm: Move a dereference below a NULL testJulia Lawall
If the NULL test is necessary, then the dereference should be moved below the NULL test. The semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @@ type T; expression E; identifier i,fld; statement S; @@ - T i = E->fld; + T i; ... when != E when != i if (E == NULL) S + i = E->fld; // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Dave Airlie <airlied@linux.ie>
2009-07-15fb/intelfb: conflict with DRM_I915 and hide by defaultJesse Barnes
Users get confused by this driver. It's really a special purpose embedded driver, and causes a lot of problems if enabled. So hide it under EMBEDDED by default, and make sure it doesn't get enabled with the i915 DRM driver. Dave, I'm hoping you can feed this to Linus through your tree. It's appropriate for 2.6.31 I think. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Dave Airlie <airlied@linux.ie>
2009-07-15drm/ttm: fix misplaced parenthesesRoel Kluin
Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Dave Airlie <airlied@linux.ie>
2009-07-15drm/via: Fix vblank IRQ on VIA hardware.Simon Farnsworth
via_enable_vblank wasn't setting the VBlank enable bit - instead, it was masking out the rest of the register. At the same time, fix via_disable_vblank to clear the VBlank enable bit. Signed-off-by: Dave Airlie <airlied@linux.ie>
2009-07-15drm: drm_gem, check kzalloc retvalJiri Slaby
Check kzalloc retval against NULL in drm_gem_object_alloc and bail out appropriately. While at it merge the fail paths and jump to them by gotos at the end of the function. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Dave Airlie <airlied@linux.ie>
2009-07-15drm: drm_debugfs, check kmalloc retvalJiri Slaby
Check kmalloc return value in drm_debugfs_create_files and bail out appropriately if the pointer is NULL. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Dave Airlie <airlied@linux.ie>
2009-07-15drm/radeon: add some missing pci idsAlex Deucher
Also, fix ordering for a couple others Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@linux.ie>
2009-07-14ahci: add device ID for 82801JI sata controllerMark Goodwin
Add device ID for Intel 82801JI SATA AHCI controller. Signed-off-by: David Milburn <dmilburn@redhat.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-07-14drivers/ata: Move a dereference below a NULL testJulia Lawall
If the NULL test is necessary, then the dereference should be moved below the NULL test. The semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @@ type T; expression E; identifier i,fld; statement S; @@ - T i = E->fld; + T i; ... when != E when != i if (E == NULL) S + i = E->fld; // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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