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2010-11-30drivers: char: hvc: add arm JTAG DCC console supportDaniel Walker
This driver adds a basic console that uses the arm JTAG DCC to transfer data back and forth. It has support for ARMv6 and ARMv7. This console is created under the HVC driver, and should be named /dev/hvcX (or /dev/hvc0 for example). Cc: Tony Lindgren <tony@atomide.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org> Cc: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Daniel Walker <dwalker@codeaurora.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-11-30RS485 documentation: add 16C950 UART descriptionYegor Yefremov
Add a notion about 16C950 UART, that is using DTR signal for RS485 mode. Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-11-30serial: ifx6x60: fix memory leakVasiliy Kulikov
If tty_register_driver() failed then tty_driver is still alive. Free it with put_tty_driver(). Signed-off-by: Vasiliy Kulikov <segoon@openwall.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-11-30serial: ifx6x60: free IRQ on errorVasiliy Kulikov
If second request_irq() failed then the first IRQ must be freed in error handling code. Signed-off-by: Vasiliy Kulikov <segoon@openwall.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-11-30Serial: EG20T: add PCH_UART driverTomoya MORINAGA
UART driver of Intel EG20T(Topcliff) PCH Intel EG20T PCH is the platform controller hub that is going to be used in Intel's general embedded platform. All IO peripherals in Intel EG20T PCH are actually devices sitting on AMBA bus. Intel EG20T PCH has UART I/F. Using this I/F, it is able to access system devices connected to UART. Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com> Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-11-30Serial: ce4100: Add PCI UART support for the ce4100Dirk Brandewie
This patch adds support for the PCI UART on the ce4100. Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-11-16serial: ifx6x60: Fix missing include for msleepAlan Cox
Noted by Stephen Rothwell Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-11-16serial: ifx6x60: The IFX requires SPIAlan Cox
Correct the KConfig as noted by Greg. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-11-16serial: mpc52xx: make printout for type more genericWolfram Sang
The printout for the type should be just "5xxx", so 512x users won't wonder why they have a mpc52xx-type UART. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-11-16parisc: cleanup console handlingJiri Slaby
* use newly added for_each_console for iterating consoles * add proper console locking * do not initialize tmp twice * no need to declare console_drivers, it's already done in console.h Signed-off-by: Jiri Slaby <jslaby@suse.cz> Acked-by: Kyle McMartin <kyle@mcmartin.ca> Cc: Helge Deller <deller@gmx.de> Cc: "James E.J. Bottomley" <jejb@parisc-linux.org> Cc: linux-parisc@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-11-16console: add /proc/consolesJiri Slaby
It allows users to see what consoles are currently known to the system and with what flags. It is based on Werner's patch, the part about traversing fds was removed, the code was moved to kernel/printk.c, where consoles are handled and it makes more sense to me. Signed-off-by: Jiri Slaby <jslaby@suse.cz> [cleanups] Signed-off-by: "Dr. Werner Fink" <werner@suse.de> Cc: Al Viro <viro@ZenIV.linux.org.uk> Cc: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-11-16VIDEO: xen-fb, switch to for_each_consoleJiri Slaby
Use newly added for_each_console for iterating consoles. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Cc: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: Chris Wright <chrisw@sous-sol.org> Cc: virtualization@lists.osdl.org Cc: xen-devel@lists.xensource.com Cc: linux-fbdev@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-11-16TTY: include termios.h in tty_driver.hJiri Slaby
We reference termios and termiox in tty_driver.h, but we do not include linux/termios.h where these are defined. Add the #include properly. Otherwise when we include tty_driver.h, we get compile errors. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Greg KH <gregkh@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-11-16console: move for_each_console to linux/console.hJiri Slaby
Move it out of printk.c so that we can use it all over the code. There are some potential users which will be converted to that macro in next patches. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-11-11serial: cpu_uart: Remove unused uart_cpm_port fieldsBaurzhan Ismagulov
AFAICT, these fields are not used anywhere. Signed-off-by: Baurzhan Ismagulov <ibr@radix50.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-11-11serial: cpm_uat: reducing CPM serial latencyBaurzhan Ismagulov
Setting Rx FIFO size to 1 reduces reader process wakeup latency up to 20x for baud rates <= 9600. This patch sets the Rx FIFO size to 1 for baud rates <= 9600 or if low latency has been requested for the tty. Signed-off-by: Michael Trimarchi <michael@gandalf.sssup.it> Signed-off-by: Bruno Morelli <bruno@evidence.eu.com> Signed-off-by: Baurzhan Ismagulov <ibr@radix50.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-11-11serial: add Documentation about RS485 serial communicationsClaudio Scordino
Documentation about RS485 serial communications Signed-off-by: Claudio Scordino <claudio@evidence.eu.com> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Acked-by: Russell King <linux@arm.linux.org.uk> Acked-by: Grant Edwards <grant.b.edwards@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-11-11n_gsm: clean up printksAlan Cox
[Original From Ken Mills but I redid it using pr_ helpers instead] Also fix up coding style, there are two warnings left but that is where the CodingStyle tools blow up because they cannot handle if (blah) { foo } else switch (x) { case 1: } Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-11-11n_gsm: Fix support for legacy encodingAlan Cox
The mux supports several encoding schemes. Encoding 0 is a "not recommended" mode still sometimes used. This has now been tested with hardware that supports this mode, and found wanting. Fix the FCS handling in this mode and correct the state machine. Signed-off-by: Ken Mills <ken.k.mills@intel.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-11-11serial: Add support for UART on VIA VT8500 and compatiblesAlexey Charkov
This adds a driver for the serial ports found in VIA and WonderMedia Systems-on-Chip. Interrupt-driven FIFO operation is implemented. The hardware also supports pure register-based operation (which is slower) and DMA-based FIFO operation. As the FIFOs are only 16 bytes long, DMA operation is probably not worth the hassle. Signed-off-by: Alexey Charkov <alchark@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-11-11ifx6x60: SPI protocol driver for Infineon 6x60 modemRuss Gorby
Prototype driver for the IFX6x60 series of SPI attached modems by Jim Stanley and Russ Gorby Signed-off-by: Russ Gorby <richardx.r.gorby@intel.com> [Some reworking and a major cleanup] Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-11-08Merge branch 'for_linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: ext4: Add new ext4 inode tracepoints ext4: Don't call sb_issue_discard() in ext4_free_blocks() ext4: do not try to grab the s_umount semaphore in ext4_quota_off ext4: fix potential race when freeing ext4_io_page structures ext4: handle writeback of inodes which are being freed ext4: initialize the percpu counters before replaying the journal ext4: "ret" may be used uninitialized in ext4_lazyinit_thread() ext4: fix lazyinit hang after removing request
2010-11-08Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6: TTY: move .gitignore from drivers/char/ to drivers/tty/vt/ TTY: create drivers/tty/vt and move the vt code there TTY: create drivers/tty and move the tty core files there
2010-11-08Merge branch 'staging-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-next-2.6 * 'staging-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-next-2.6: Staging: ath6kl: remove empty files that mess with 'distclean' staging: ath6kl: Fixing the driver to use modified mmc_host structure Staging: solo6x10: fix build problem
2010-11-08Merge branch 'rmobile-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6 * 'rmobile-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: mmc: sh_mmcif: Convert extern inline to static inline. ARM: mach-shmobile: Allow GPIO chips to register IRQ mappings. ARM: mach-shmobile: fix sh7372 after a recent clock framework rework ARM: mach-shmobile: include drivers/sh/Kconfig ARM: mach-shmobile: ap4evb: Add HDMI sound support ARM: mach-shmobile: clock-sh7372: Add FSIDIV clock support ARM: shmobile: remove sh_timer_config clk member
2010-11-08Merge branch 'sh-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6 * 'sh-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: sh: clkfwk: Fix up checkpatch warnings. sh: make some needlessly global sh7724 clocks static sh: add clk_round_parent() to optimize parent clock rate sh: Simplify phys_addr_mask()/PTE_PHYS_MASK for 29/32-bit. sh: nommu: Support building without an uncached mapping. sh: nommu: use 32-bit phys mode. sh: mach-se: Fix up SE7206 no ioport build. sh: intc: Update for single IRQ reservation helper. sh: clkfwk: Fix up rate rounding error handling. sh: mach-se: Rip out superfluous 7751 PIO routines. sh: mach-se: Rip out superfluous 770x PIO routines. sh: mach-edosk7705: Kill off machtype, consolidate board def. sh: mach-edosk7705: update for this century, kill off PIO trapping. sh: mach-se: Rip out superfluous 7206 PIO routines. sh: mach-systemh: Kill off dead board. sh: mach-snapgear: Kill off machtype, consolidate board def. sh: mach-snapgear: Rip out superfluous PIO routines. sh: mach-microdev: SuperIO-relative ioport mapping.
2010-11-08ext4: Add new ext4 inode tracepointsTheodore Ts'o
Add ext4_evict_inode, ext4_drop_inode, ext4_mark_inode_dirty, and ext4_begin_ordered_truncate() Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2010-11-08ext4: Don't call sb_issue_discard() in ext4_free_blocks()Theodore Ts'o
Commit 5c521830cf (ext4: Support discard requests when running in no-journal mode) attempts to add sb_issue_discard() for data blocks (in data=writeback mode) and in no-journal mode. Unfortunately, this no longer works, because in commit dd3932eddf (block: remove BLKDEV_IFL_WAIT), sb_issue_discard() only presents a synchronous interface, and there are times when we call ext4_free_blocks() when we are are holding a spinlock, or are otherwise in an atomic context. For now, I've removed the call to sb_issue_discard() to prevent a deadlock or (if spinlock debugging is enabled) failures like this: BUG: scheduling while atomic: rc.sysinit/1376/0x00000002 Pid: 1376, comm: rc.sysinit Not tainted 2.6.36-ARCH #1 Call Trace: [<ffffffff810397ce>] __schedule_bug+0x5e/0x70 [<ffffffff81403110>] schedule+0x950/0xa70 [<ffffffff81060bad>] ? insert_work+0x7d/0x90 [<ffffffff81060fbd>] ? queue_work_on+0x1d/0x30 [<ffffffff81061127>] ? queue_work+0x37/0x60 [<ffffffff8140377d>] schedule_timeout+0x21d/0x360 [<ffffffff812031c3>] ? generic_make_request+0x2c3/0x540 [<ffffffff81402680>] wait_for_common+0xc0/0x150 [<ffffffff81041490>] ? default_wake_function+0x0/0x10 [<ffffffff812034bc>] ? submit_bio+0x7c/0x100 [<ffffffff810680a0>] ? wake_bit_function+0x0/0x40 [<ffffffff814027b8>] wait_for_completion+0x18/0x20 [<ffffffff8120a969>] blkdev_issue_discard+0x1b9/0x210 [<ffffffff811ba03e>] ext4_free_blocks+0x68e/0xb60 [<ffffffff811b1650>] ? __ext4_handle_dirty_metadata+0x110/0x120 [<ffffffff811b098c>] ext4_ext_truncate+0x8cc/0xa70 [<ffffffff810d713e>] ? pagevec_lookup+0x1e/0x30 [<ffffffff81191618>] ext4_truncate+0x178/0x5d0 [<ffffffff810eacbb>] ? unmap_mapping_range+0xab/0x280 [<ffffffff810d8976>] vmtruncate+0x56/0x70 [<ffffffff811925cb>] ext4_setattr+0x14b/0x460 [<ffffffff811319e4>] notify_change+0x194/0x380 [<ffffffff81117f80>] do_truncate+0x60/0x90 [<ffffffff811e08fa>] ? security_inode_permission+0x1a/0x20 [<ffffffff811eaec1>] ? tomoyo_path_truncate+0x11/0x20 [<ffffffff81127539>] do_last+0x5d9/0x770 [<ffffffff811278bd>] do_filp_open+0x1ed/0x680 [<ffffffff8140644f>] ? page_fault+0x1f/0x30 [<ffffffff81132bfc>] ? alloc_fd+0xec/0x140 [<ffffffff81118db1>] do_sys_open+0x61/0x120 [<ffffffff81118e8b>] sys_open+0x1b/0x20 [<ffffffff81002e6b>] system_call_fastpath+0x16/0x1b https://bugzilla.kernel.org/show_bug.cgi?id=22302 Reported-by: Mathias Burén <mathias.buren@gmail.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Cc: jiayingz@google.com
2010-11-08ext4: do not try to grab the s_umount semaphore in ext4_quota_offDmitry Monakhov
It's not needed to sync the filesystem, and it fixes a lock_dep complaint. Signed-off-by: Dmitry Monakhov <dmonakhov@gmail.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Reviewed-by: Jan Kara <jack@suse.cz>
2010-11-08ext4: fix potential race when freeing ext4_io_page structuresTheodore Ts'o
Use an atomic_t and make sure we don't free the structure while we might still be submitting I/O for that page. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2010-11-08ext4: handle writeback of inodes which are being freedTheodore Ts'o
The following BUG can occur when an inode which is getting freed when it still has dirty pages outstanding, and it gets deleted (in this because it was the target of a rename). In ordered mode, we need to make sure the data pages are written just in case we crash before the rename (or unlink) is committed. If the inode is being freed then when we try to igrab the inode, we end up tripping the BUG_ON at fs/ext4/page-io.c:146. To solve this problem, we need to keep track of the number of io callbacks which are pending, and avoid destroying the inode until they have all been completed. That way we don't have to bump the inode count to keep the inode from being destroyed; an approach which doesn't work because the count could have already been dropped down to zero before the inode writeback has started (at which point we're not allowed to bump the count back up to 1, since it's already started getting freed). Thanks to Dave Chinner for suggesting this approach, which is also used by XFS. kernel BUG at /scratch_space/linux-2.6/fs/ext4/page-io.c:146! Call Trace: [<ffffffff811075b1>] ext4_bio_write_page+0x172/0x307 [<ffffffff811033a7>] mpage_da_submit_io+0x2f9/0x37b [<ffffffff811068d7>] mpage_da_map_and_submit+0x2cc/0x2e2 [<ffffffff811069b3>] mpage_add_bh_to_extent+0xc6/0xd5 [<ffffffff81106c66>] write_cache_pages_da+0x2a4/0x3ac [<ffffffff81107044>] ext4_da_writepages+0x2d6/0x44d [<ffffffff81087910>] do_writepages+0x1c/0x25 [<ffffffff810810a4>] __filemap_fdatawrite_range+0x4b/0x4d [<ffffffff810815f5>] filemap_fdatawrite_range+0xe/0x10 [<ffffffff81122a2e>] jbd2_journal_begin_ordered_truncate+0x7b/0xa2 [<ffffffff8110615d>] ext4_evict_inode+0x57/0x24c [<ffffffff810c14a3>] evict+0x22/0x92 [<ffffffff810c1a3d>] iput+0x212/0x249 [<ffffffff810bdf16>] dentry_iput+0xa1/0xb9 [<ffffffff810bdf6b>] d_kill+0x3d/0x5d [<ffffffff810be613>] dput+0x13a/0x147 [<ffffffff810b990d>] sys_renameat+0x1b5/0x258 [<ffffffff81145f71>] ? _atomic_dec_and_lock+0x2d/0x4c [<ffffffff810b2950>] ? cp_new_stat+0xde/0xea [<ffffffff810b29c1>] ? sys_newlstat+0x2d/0x38 [<ffffffff810b99c6>] sys_rename+0x16/0x18 [<ffffffff81002a2b>] system_call_fastpath+0x16/0x1b Reported-by: Nick Bowler <nbowler@elliptictech.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Tested-by: Nick Bowler <nbowler@elliptictech.com>
2010-11-08Merge branch 'rmobile/core' into rmobile-fixes-for-linusPaul Mundt
2010-11-08Merge branches 'sh/pio-death', 'sh/nommu', 'sh/clkfwk', 'sh/core' and ↵Paul Mundt
'sh/intc-extension' into sh-fixes-for-linus
2010-11-08sh: clkfwk: Fix up checkpatch warnings.Paul Mundt
The clk_round_parent() change introduced various checkpatch warnings, tidy them up. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-11-08sh: make some needlessly global sh7724 clocks staticGuennadi Liakhovetski
These clocks are currently only used inside one .c file and are not declared in any headers, therefore having them global is useless. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-11-08sh: add clk_round_parent() to optimize parent clock rateGuennadi Liakhovetski
Sometimes it is possible and reasonable to adjust the parent clock rate to improve precision of the child clock, e.g., if the child clock has no siblings. clk_round_parent() is a new addition to the SH clock-framework API, that implements such an optimization for child clocks with divisors, taking all integer values in a range. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-11-06Staging: ath6kl: remove empty files that mess with 'distclean'Greg Kroah-Hartman
These two .h files would get removed from the tree when doing make distclean It turns out they are not needed at all, so just delete them which fixes people's git trees when doing development. Reported-by: Andi Kleen <andi@firstfloor.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-11-06floppy: fix another use-after-freeVivek Goyal
While scanning the floopy code due to c093ee4f07f4 ("floppy: fix use-after-free in module load failure path"), I found one more instance of trying to access disk->queue pointer after doing put_disk() on gendisk. For some reason , floppy moule still loads/unloads fine. The object is probably still around with right pointer values. o There seems to be one more instance of trying to cleanup the request queue after we have called put_disk() on associated gendisk. o This fix is more out of code inspection. Even without this fix for some reason I am able to load/unload floppy module without any issues. o Floppy module loads/unloads fine after the fix. Signed-off-by: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-11-05TTY: move .gitignore from drivers/char/ to drivers/tty/vt/Greg Kroah-Hartman
The autogenerated files (consolemap_deftbl.c and defkeymap.c) need to be ignored by git, so move the .gitignore file that was doing it to the properly location now that the files have moved as well. Cc: Arnd Bergmann <arnd@arndb.de> Cc: Jiri Slaby <jslaby@suse.cz> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-11-05ipw2x00: remove the right /proc/net entryLinus Torvalds
Commit 27ae60f8f7aa ("ipw2x00: replace "ieee80211" with "libipw" where appropriate") changed DRV_NAME to be "libipw", but didn't properly fix up the places where it was used to specify the name for the /proc/net/ directory. For backwards compatibility reasons, that directory name remained "ieee80211", but due to the DRV_NAME change, the error case printouts and the cleanup functions now used "libipw" instead. Which made it all fail badly. For example, on module unload as reported by Randy: WARNING: at fs/proc/generic.c:816 remove_proc_entry+0x156/0x35e() name 'libipw' because it's trying to unregister a /proc directory that obviously doesn't even exist. Clean it all up to use DRV_PROCNAME for the actual /proc directory name. Reported-and-tested-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: Pavel Roskin <proski@gnu.org> Cc: John W. Linville <linville@tuxdriver.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-11-05Merge branch 'kvm-updates/2.6.37' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds
* 'kvm-updates/2.6.37' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: PPC: BookE: Load the lower half of MSR KVM: PPC: BookE: fix sleep with interrupts disabled KVM: PPC: e500: Call kvm_vcpu_uninit() before kvmppc_e500_tlb_uninit(). PPC: KVM: Book E doesn't have __end_interrupts. KVM: x86: Issue smp_call_function_many with preemption disabled KVM: x86: fix information leak to userland KVM: PPC: fix information leak to userland KVM: MMU: fix rmap_remove on non present sptes KVM: Write protect memory after slot swap
2010-11-05floppy: fix use-after-free in module load failure pathLinus Torvalds
Commit 488211844e0c ("floppy: switch to one queue per drive instead of sharing a queue") introduced a use-after-free. We do "put_disk()" on the disk device _before_ we then clean up the queue associated with that disk. Move the put_disk() down to avoid dereferencing a free'd data structure. Cc: Jens Axboe <jaxboe@fusionio.com> Cc: Vivek Goyal <vgoyal@redhat.com> Reported-and-tested-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-11-05watchdog: Fix section mismatch and potential undefined behavior.David Daney
Commit d9ca07a05ce1 ("watchdog: Avoid kernel crash when disabling watchdog") introduces a section mismatch. Now that we reference no_watchdog from non-__init code it can no longer be __initdata. Signed-off-by: David Daney <ddaney@caviumnetworks.com> Cc: Stephane Eranian <eranian@google.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-11-05Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (41 commits) inet_diag: Make sure we actually run the same bytecode we audited. netlink: Make nlmsg_find_attr take a const nlmsghdr*. fib: fib_result_assign() should not change fib refcounts netfilter: ip6_tables: fix information leak to userspace cls_cgroup: Fix crash on module unload memory corruption in X.25 facilities parsing net dst: fix percpu_counter list corruption and poison overwritten rds: Remove kfreed tcp conn from list rds: Lost locking in loop connection freeing de2104x: fix panic on load atl1 : fix panic on load netxen: remove unused firmware exports caif: Remove noisy printout when disconnecting caif socket caif: SPI-driver bugfix - incorrect padding. caif: Bugfix for socket priority, bindtodev and dbg channel. smsc911x: Set Ethernet EEPROM size to supported device's size ipv4: netfilter: ip_tables: fix information leak to userland ipv4: netfilter: arp_tables: fix information leak to userland cxgb4vf: remove call to stop TX queues at load time. cxgb4: remove call to stop TX queues at load time. ...
2010-11-05Merge branch 'fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6 * 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6: firewire: ohci: fix race when reading count in AR descriptor firewire: ohci: avoid reallocation of AR buffers firewire: ohci: fix race in AR split packet handling firewire: ohci: fix buffer overflow in AR split packet handling
2010-11-05Merge 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: cifs: make cifs_set_oplock_level() take a cifsInodeInfo pointer cifs: dereferencing first then checking cifs: trivial comment fix: tlink_tree is now a rbtree [CIFS] Cleanup unused variable build warning cifs: convert tlink_tree to a rbtree cifs: store pointer to master tlink in superblock (try #2) cifs: trivial doc fix: note setlease implemented CIFS: Add cifs_set_oplock_level FS: cifs, remove unneeded NULL tests
2010-11-05posix-cpu-timers: workaround to suppress the problems with mt execOleg Nesterov
posix-cpu-timers.c correctly assumes that the dying process does posix_cpu_timers_exit_group() and removes all !CPUCLOCK_PERTHREAD timers from signal->cpu_timers list. But, it also assumes that timer->it.cpu.task is always the group leader, and thus the dead ->task means the dead thread group. This is obviously not true after de_thread() changes the leader. After that almost every posix_cpu_timer_ method has problems. It is not simple to fix this bug correctly. First of all, I think that timer->it.cpu should use struct pid instead of task_struct. Also, the locking should be reworked completely. In particular, tasklist_lock should not be used at all. This all needs a lot of nontrivial and hard-to-test changes. Change __exit_signal() to do posix_cpu_timers_exit_group() when the old leader dies during exec. This is not the fix, just the temporary hack to hide the problem for 2.6.37 and stable. IOW, this is obviously wrong but this is what we currently have anyway: cpu timers do not work after mt exec. In theory this change adds another race. The exiting leader can detach the timers which were attached to the new leader. However, the window between de_thread() and release_task() is small, we can pretend that sys_timer_create() was called before de_thread(). Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-11-05Merge branch 'hwmon-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/groeck/staging * 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/staging: hwmon: (ltc4261) Fix error message format hwmon: (ltc4261) Add missing newline in debug message
2010-11-05cifs: make cifs_set_oplock_level() take a cifsInodeInfo pointerPavel Shilovsky
All the callers already have a pointer to struct cifsInodeInfo. Use it. Signed-off-by: Suresh Jayaraman <sjayaraman@suse.de> Signed-off-by: Pavel Shilovsky <piastryyy@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2010-11-05hwmon: (ltc4261) Fix error message formatJean Delvare
adapter->id is deprecated and not set by any adapter driver, so this was certainly not what the author wanted to use. adapter->nr maybe, but as dev_err() already includes this value, as well as the client's address, there's no point repeating them. Better print a simple error message in plain English words. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Guenter Roeck <guenter.roeck@ericsson.com> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
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