1. 04 8月, 2014 17 次提交
  2. 03 8月, 2014 1 次提交
    • L
      Merge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm · 3f9c08f7
      Linus Torvalds 提交于
      Pull ARM fixes from Russell King:
       "A few fixes for ARM.  Some of these are correctness issues:
         - TLBs must be flushed after the old mappings are removed by the DMA
           mapping code, but before the new mappings are established.
         - An off-by-one entry error in the Keystone LPAE setup code.
      
        Fixes include:
         - ensuring that the identity mapping for LPAE does not remove the
           kernel image from the identity map.
         - preventing userspace from trapping into kgdb.
         - fixing a preemption issue in the Intel iwmmxt code.
         - fixing a build error with nommu.
      
        Other changes include:
         - Adding a note about which areas of memory are expected to be
           accessible while the identity mapping tables are in place"
      
      * 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
        ARM: 8124/1: don't enter kgdb when userspace executes a kgdb break instruction
        ARM: idmap: add identity mapping usage note
        ARM: 8115/1: LPAE: reduce damage caused by idmap to virtual memory layout
        ARM: fix alignment of keystone page table fixup
        ARM: 8112/1: only select ARM_PATCH_PHYS_VIRT if MMU is enabled
        ARM: 8100/1: Fix preemption disable in iwmmxt_task_enable()
        ARM: DMA: ensure that old section mappings are flushed from the TLB
      3f9c08f7
  3. 02 8月, 2014 12 次提交
  4. 01 8月, 2014 10 次提交
    • J
      timer: Fix lock inversion between hrtimer_bases.lock and scheduler locks · 504d5874
      Jan Kara 提交于
      clockevents_increase_min_delta() calls printk() from under
      hrtimer_bases.lock. That causes lock inversion on scheduler locks because
      printk() can call into the scheduler. Lockdep puts it as:
      
      ======================================================
      [ INFO: possible circular locking dependency detected ]
      3.15.0-rc8-06195-g939f04be #2 Not tainted
      -------------------------------------------------------
      trinity-main/74 is trying to acquire lock:
       (&port_lock_key){-.....}, at: [<811c60be>] serial8250_console_write+0x8c/0x10c
      
      but task is already holding lock:
       (hrtimer_bases.lock){-.-...}, at: [<8103caeb>] hrtimer_try_to_cancel+0x13/0x66
      
      which lock already depends on the new lock.
      
      the existing dependency chain (in reverse order) is:
      
      -> #5 (hrtimer_bases.lock){-.-...}:
             [<8104a942>] lock_acquire+0x92/0x101
             [<8142f11d>] _raw_spin_lock_irqsave+0x2e/0x3e
             [<8103c918>] __hrtimer_start_range_ns+0x1c/0x197
             [<8107ec20>] perf_swevent_start_hrtimer.part.41+0x7a/0x85
             [<81080792>] task_clock_event_start+0x3a/0x3f
             [<810807a4>] task_clock_event_add+0xd/0x14
             [<8108259a>] event_sched_in+0xb6/0x17a
             [<810826a2>] group_sched_in+0x44/0x122
             [<81082885>] ctx_sched_in.isra.67+0x105/0x11f
             [<810828e6>] perf_event_sched_in.isra.70+0x47/0x4b
             [<81082bf6>] __perf_install_in_context+0x8b/0xa3
             [<8107eb8e>] remote_function+0x12/0x2a
             [<8105f5af>] smp_call_function_single+0x2d/0x53
             [<8107e17d>] task_function_call+0x30/0x36
             [<8107fb82>] perf_install_in_context+0x87/0xbb
             [<810852c9>] SYSC_perf_event_open+0x5c6/0x701
             [<810856f9>] SyS_perf_event_open+0x17/0x19
             [<8142f8ee>] syscall_call+0x7/0xb
      
      -> #4 (&ctx->lock){......}:
             [<8104a942>] lock_acquire+0x92/0x101
             [<8142f04c>] _raw_spin_lock+0x21/0x30
             [<81081df3>] __perf_event_task_sched_out+0x1dc/0x34f
             [<8142cacc>] __schedule+0x4c6/0x4cb
             [<8142cae0>] schedule+0xf/0x11
             [<8142f9a6>] work_resched+0x5/0x30
      
      -> #3 (&rq->lock){-.-.-.}:
             [<8104a942>] lock_acquire+0x92/0x101
             [<8142f04c>] _raw_spin_lock+0x21/0x30
             [<81040873>] __task_rq_lock+0x33/0x3a
             [<8104184c>] wake_up_new_task+0x25/0xc2
             [<8102474b>] do_fork+0x15c/0x2a0
             [<810248a9>] kernel_thread+0x1a/0x1f
             [<814232a2>] rest_init+0x1a/0x10e
             [<817af949>] start_kernel+0x303/0x308
             [<817af2ab>] i386_start_kernel+0x79/0x7d
      
      -> #2 (&p->pi_lock){-.-...}:
             [<8104a942>] lock_acquire+0x92/0x101
             [<8142f11d>] _raw_spin_lock_irqsave+0x2e/0x3e
             [<810413dd>] try_to_wake_up+0x1d/0xd6
             [<810414cd>] default_wake_function+0xb/0xd
             [<810461f3>] __wake_up_common+0x39/0x59
             [<81046346>] __wake_up+0x29/0x3b
             [<811b8733>] tty_wakeup+0x49/0x51
             [<811c3568>] uart_write_wakeup+0x17/0x19
             [<811c5dc1>] serial8250_tx_chars+0xbc/0xfb
             [<811c5f28>] serial8250_handle_irq+0x54/0x6a
             [<811c5f57>] serial8250_default_handle_irq+0x19/0x1c
             [<811c56d8>] serial8250_interrupt+0x38/0x9e
             [<810510e7>] handle_irq_event_percpu+0x5f/0x1e2
             [<81051296>] handle_irq_event+0x2c/0x43
             [<81052cee>] handle_level_irq+0x57/0x80
             [<81002a72>] handle_irq+0x46/0x5c
             [<810027df>] do_IRQ+0x32/0x89
             [<8143036e>] common_interrupt+0x2e/0x33
             [<8142f23c>] _raw_spin_unlock_irqrestore+0x3f/0x49
             [<811c25a4>] uart_start+0x2d/0x32
             [<811c2c04>] uart_write+0xc7/0xd6
             [<811bc6f6>] n_tty_write+0xb8/0x35e
             [<811b9beb>] tty_write+0x163/0x1e4
             [<811b9cd9>] redirected_tty_write+0x6d/0x75
             [<810b6ed6>] vfs_write+0x75/0xb0
             [<810b7265>] SyS_write+0x44/0x77
             [<8142f8ee>] syscall_call+0x7/0xb
      
      -> #1 (&tty->write_wait){-.....}:
             [<8104a942>] lock_acquire+0x92/0x101
             [<8142f11d>] _raw_spin_lock_irqsave+0x2e/0x3e
             [<81046332>] __wake_up+0x15/0x3b
             [<811b8733>] tty_wakeup+0x49/0x51
             [<811c3568>] uart_write_wakeup+0x17/0x19
             [<811c5dc1>] serial8250_tx_chars+0xbc/0xfb
             [<811c5f28>] serial8250_handle_irq+0x54/0x6a
             [<811c5f57>] serial8250_default_handle_irq+0x19/0x1c
             [<811c56d8>] serial8250_interrupt+0x38/0x9e
             [<810510e7>] handle_irq_event_percpu+0x5f/0x1e2
             [<81051296>] handle_irq_event+0x2c/0x43
             [<81052cee>] handle_level_irq+0x57/0x80
             [<81002a72>] handle_irq+0x46/0x5c
             [<810027df>] do_IRQ+0x32/0x89
             [<8143036e>] common_interrupt+0x2e/0x33
             [<8142f23c>] _raw_spin_unlock_irqrestore+0x3f/0x49
             [<811c25a4>] uart_start+0x2d/0x32
             [<811c2c04>] uart_write+0xc7/0xd6
             [<811bc6f6>] n_tty_write+0xb8/0x35e
             [<811b9beb>] tty_write+0x163/0x1e4
             [<811b9cd9>] redirected_tty_write+0x6d/0x75
             [<810b6ed6>] vfs_write+0x75/0xb0
             [<810b7265>] SyS_write+0x44/0x77
             [<8142f8ee>] syscall_call+0x7/0xb
      
      -> #0 (&port_lock_key){-.....}:
             [<8104a62d>] __lock_acquire+0x9ea/0xc6d
             [<8104a942>] lock_acquire+0x92/0x101
             [<8142f11d>] _raw_spin_lock_irqsave+0x2e/0x3e
             [<811c60be>] serial8250_console_write+0x8c/0x10c
             [<8104e402>] call_console_drivers.constprop.31+0x87/0x118
             [<8104f5d5>] console_unlock+0x1d7/0x398
             [<8104fb70>] vprintk_emit+0x3da/0x3e4
             [<81425f76>] printk+0x17/0x19
             [<8105bfa0>] clockevents_program_min_delta+0x104/0x116
             [<8105c548>] clockevents_program_event+0xe7/0xf3
             [<8105cc1c>] tick_program_event+0x1e/0x23
             [<8103c43c>] hrtimer_force_reprogram+0x88/0x8f
             [<8103c49e>] __remove_hrtimer+0x5b/0x79
             [<8103cb21>] hrtimer_try_to_cancel+0x49/0x66
             [<8103cb4b>] hrtimer_cancel+0xd/0x18
             [<8107f102>] perf_swevent_cancel_hrtimer.part.60+0x2b/0x30
             [<81080705>] task_clock_event_stop+0x20/0x64
             [<81080756>] task_clock_event_del+0xd/0xf
             [<81081350>] event_sched_out+0xab/0x11e
             [<810813e0>] group_sched_out+0x1d/0x66
             [<81081682>] ctx_sched_out+0xaf/0xbf
             [<81081e04>] __perf_event_task_sched_out+0x1ed/0x34f
             [<8142cacc>] __schedule+0x4c6/0x4cb
             [<8142cae0>] schedule+0xf/0x11
             [<8142f9a6>] work_resched+0x5/0x30
      
      other info that might help us debug this:
      
      Chain exists of:
        &port_lock_key --> &ctx->lock --> hrtimer_bases.lock
      
       Possible unsafe locking scenario:
      
             CPU0                    CPU1
             ----                    ----
        lock(hrtimer_bases.lock);
                                     lock(&ctx->lock);
                                     lock(hrtimer_bases.lock);
        lock(&port_lock_key);
      
       *** DEADLOCK ***
      
      4 locks held by trinity-main/74:
       #0:  (&rq->lock){-.-.-.}, at: [<8142c6f3>] __schedule+0xed/0x4cb
       #1:  (&ctx->lock){......}, at: [<81081df3>] __perf_event_task_sched_out+0x1dc/0x34f
       #2:  (hrtimer_bases.lock){-.-...}, at: [<8103caeb>] hrtimer_try_to_cancel+0x13/0x66
       #3:  (console_lock){+.+...}, at: [<8104fb5d>] vprintk_emit+0x3c7/0x3e4
      
      stack backtrace:
      CPU: 0 PID: 74 Comm: trinity-main Not tainted 3.15.0-rc8-06195-g939f04be #2
       00000000 81c3a310 8b995c14 81426f69 8b995c44 81425a99 8161f671 8161f570
       8161f538 8161f559 8161f538 8b995c78 8b142bb0 00000004 8b142fdc 8b142bb0
       8b995ca8 8104a62d 8b142fac 000016f2 81c3a310 00000001 00000001 00000003
      Call Trace:
       [<81426f69>] dump_stack+0x16/0x18
       [<81425a99>] print_circular_bug+0x18f/0x19c
       [<8104a62d>] __lock_acquire+0x9ea/0xc6d
       [<8104a942>] lock_acquire+0x92/0x101
       [<811c60be>] ? serial8250_console_write+0x8c/0x10c
       [<811c6032>] ? wait_for_xmitr+0x76/0x76
       [<8142f11d>] _raw_spin_lock_irqsave+0x2e/0x3e
       [<811c60be>] ? serial8250_console_write+0x8c/0x10c
       [<811c60be>] serial8250_console_write+0x8c/0x10c
       [<8104af87>] ? lock_release+0x191/0x223
       [<811c6032>] ? wait_for_xmitr+0x76/0x76
       [<8104e402>] call_console_drivers.constprop.31+0x87/0x118
       [<8104f5d5>] console_unlock+0x1d7/0x398
       [<8104fb70>] vprintk_emit+0x3da/0x3e4
       [<81425f76>] printk+0x17/0x19
       [<8105bfa0>] clockevents_program_min_delta+0x104/0x116
       [<8105cc1c>] tick_program_event+0x1e/0x23
       [<8103c43c>] hrtimer_force_reprogram+0x88/0x8f
       [<8103c49e>] __remove_hrtimer+0x5b/0x79
       [<8103cb21>] hrtimer_try_to_cancel+0x49/0x66
       [<8103cb4b>] hrtimer_cancel+0xd/0x18
       [<8107f102>] perf_swevent_cancel_hrtimer.part.60+0x2b/0x30
       [<81080705>] task_clock_event_stop+0x20/0x64
       [<81080756>] task_clock_event_del+0xd/0xf
       [<81081350>] event_sched_out+0xab/0x11e
       [<810813e0>] group_sched_out+0x1d/0x66
       [<81081682>] ctx_sched_out+0xaf/0xbf
       [<81081e04>] __perf_event_task_sched_out+0x1ed/0x34f
       [<8104416d>] ? __dequeue_entity+0x23/0x27
       [<81044505>] ? pick_next_task_fair+0xb1/0x120
       [<8142cacc>] __schedule+0x4c6/0x4cb
       [<81047574>] ? trace_hardirqs_off_caller+0xd7/0x108
       [<810475b0>] ? trace_hardirqs_off+0xb/0xd
       [<81056346>] ? rcu_irq_exit+0x64/0x77
      
      Fix the problem by using printk_deferred() which does not call into the
      scheduler.
      Reported-by: NFengguang Wu <fengguang.wu@intel.com>
      Signed-off-by: NJan Kara <jack@suse.cz>
      Cc: stable@vger.kernel.org
      Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
      504d5874
    • E
      vfs: fix check for fallocate on active swapfile · 6d2b6170
      Eric Biggers 提交于
      Fix the broken check for calling sys_fallocate() on an active swapfile,
      introduced by commit 0790b31b ("fs: disallow all fallocate
      operation on active swapfile").
      Signed-off-by: NEric Biggers <ebiggers3@gmail.com>
      Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
      6d2b6170
    • C
      direct-io: fix AIO regression · af436472
      Christoph Hellwig 提交于
      The direct-io.c rewrite to use the iov_iter infrastructure stopped updating
      the size field in struct dio_submit, and thus rendered the check for
      allowing asynchronous completions to always return false.  Fix this by
      comparing it to the count of bytes in the iov_iter instead.
      Signed-off-by: NChristoph Hellwig <hch@lst.de>
      Reported-by: NTim Chen <tim.c.chen@linux.intel.com>
      Tested-by: NTim Chen <tim.c.chen@linux.intel.com>
      af436472
    • K
      ASoC: rsnd: fixup SND_SOC_DAIFMT_xB_xF behavior · 1a7889ca
      Kuninori Morimoto 提交于
      In current R-Car rsnd driver,
      the SND_SOC_DAIFMT_xB_xF flags are used to HW default behavior,
      but, it should be used to specific format.
      The waveforms of LEFT_J/RIGHT_J format with
      SND_SOC_DAIFMT_NB_NF flag will be
      started from "falling edge" without this patch.
      But, it should be started from "rising edge".
      Reported-by: NJun Watanabe <jun.watanabe.ue@renesas.com>
      Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
      Signed-off-by: NMark Brown <broonie@linaro.org>
      1a7889ca
    • L
      Merge tag 'pm+acpi-3.16-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm · 6f092803
      Linus Torvalds 提交于
      Pull ACPI fix from Rafael Wysocki:
       "One commit that fixes a problem causing PNP devices to be associated
        with wrong ACPI device objects sometimes during device enumeration due
        to an incorrect check in a matching function.
      
        That problem was uncovered by the ACPI device enumeration rework in
        3.14"
      
      * tag 'pm+acpi-3.16-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
        ACPI / PNP: Fix acpi_pnp_match()
      6f092803
    • K
      ASoC: rsnd: fixup pcm_new callback method · 7c63f3c0
      Kuninori Morimoto 提交于
      bff58ea4
      (ASoC: rsnd: add DVC support) added DVC support,
      and it added pcm_new callback feature for it.
      Then it called all DAI's pcm_new callback, and it was wrong.
      This patch fixup it and call correct callback.
      Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
      Signed-off-by: NMark Brown <broonie@linaro.org>
      7c63f3c0
    • K
      ASoC: rsnd: add missing dev_dbg() in rsnd_bset() · 4f8f86aa
      Kuninori Morimoto 提交于
      b8c63786
      (ASoC: rsnd: use regmap_mmio instead of original regmap bus)
      used regmap_mmio and modified dev_dbg() for rsnd_read/write().
      But rsnd_bset() is missing it.
      Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
      Signed-off-by: NMark Brown <broonie@linaro.org>
      4f8f86aa
    • K
      ASoC: rsnd: care audio local bus data format consistency · 1cc71959
      Kuninori Morimoto 提交于
      R-Car sound uses Audio Local Bus which uses Lch/Rch format.
      This bus is used if driver uses BUSIF.
      But sound data is written as Rch/Lch format in register.
      This means Rch <-> Lch will be inverted.
      SSIU :: BUSIF_DALIGN is used to controlling data format.
      Reported-by: NJun Watanabe <jun.watanabe.ue@renesas.com>
      Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
      Signed-off-by: NMark Brown <broonie@linaro.org>
      1cc71959
    • K
      ASoC: rsnd: care detail of SRC_BSDSR · 054cd7f4
      Kuninori Morimoto 提交于
      Driver should care more detail of SRC_BSDSR settings.
      The sound includes noise without this patch
      if it used SRC.
      Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
      Signed-off-by: NMark Brown <broonie@linaro.org>
      054cd7f4
    • L
      Merge tag 'clk-fixes-for-linus' of git://git.linaro.org/people/mike.turquette/linux · 7c909b09
      Linus Torvalds 提交于
      Pull clock driver fix from Mike Turquette:
       "A single patch to re-enable audio which is broken on all DRA7
        SoC-based platforms.  Missed this one from the last set of fixes"
      
      * tag 'clk-fixes-for-linus' of git://git.linaro.org/people/mike.turquette/linux:
        clk: ti: clk-7xx: Correct ABE DPLL configuration
      7c909b09