1. 14 Nov, 2008 2 commits
  2. 28 Oct, 2008 4 commits
    • Frank Munzert's avatar
      [S390] tape: disable interrupts in tape_open and tape_release · b3c21e49
      Frank Munzert authored
      
      
      Get tape device lock with interrupts disabled. Otherwise lockdep will issue a
      warning similar to:
      
      =================================
      [ INFO: inconsistent lock state ]
      2.6.27 #1
      ---------------------------------
      inconsistent {in-hardirq-W} -> {hardirq-on-W} usage.
      vol_id/2903 [HC0[0]:SC0[0]:HE1:SE1] takes:
       (sch->lock){++..}, at: [<000003e00004c7a2>] tape_open+0x42/0x1a4 [tape]
      {in-hardirq-W} state was registered at:
        [<000000000007ce5c>] __lock_acquire+0x894/0xa74
        [<000000000007d0ce>] lock_acquire+0x92/0xb8
        [<0000000000345154>] _spin_lock+0x5c/0x9c
        [<0000000000202264>] do_IRQ+0x124/0x1f0
        [<0000000000026610>] io_return+0x0/0x8
      
      irq event stamp: 847
      hardirqs last  enabled at (847): [<000000000007aca6>] trace_hardirqs_on+0x2a/0x38
      hardirqs last disabled at (846): [<0000000000076ca2>] trace_hardirqs_off+0x2a/0x38
      softirqs last  enabled at (0): [<000000000004909e>] copy_process+0x43e/0x11f4
      softirqs last disabled at (0): [<0000000000000000>] 0x0
      
      other info that might help us debug this:
      1 lock held by vol_id/2903:
       #0:  (&bdev->bd_mutex){--..}, at: [<000000000010e0f4>] do_open+0x78/0x358
      
      stack backtrace:
      CPU: 1 Not tainted 2.6.27 #1},
      Process vol_id (pid: 2903, task: 000000003d4c0000, ksp: 000000003d4e3b10)
      0400000000000000 000000003d4e3830 0000000000000002 0000000000000000
             000000003d4e38d0 000000003d4e3848 000000003d4e3848 00000000000168a8
             0000000000000000 000000003d4e3b10 0000000000000000 0000000000000000
             000000003d4e3830 000000000000000c 000000003d4e3830 000000003d4e38a0
             000000000034aa98 00000000000168a8 000000003d4e3830 000000003d4e3880
      Call Trace:
      ([<000000000001681c>] show_trace+0x138/0x158)
       [<0000000000016902>] show_stack+0xc6/0xf8
       [<00000000000170d4>] dump_stack+0xb0/0xc0
       [<0000000000078810>] print_usage_bug+0x1e8/0x228
       [<000000000007a71c>] mark_lock+0xb14/0xd24
       [<000000000007cd5a>] __lock_acquire+0x792/0xa74
       [<000000000007d0ce>] lock_acquire+0x92/0xb8
       [<0000000000345154>] _spin_lock+0x5c/0x9c
       [<000003e00004c7a2>] tape_open+0x42/0x1a4 [tape]
       [<000003e00005185c>] tapeblock_open+0x98/0xd0 [tape]
      Signed-off-by: default avatarFrank Munzert <munzert@de.ibm.com>
      Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
      b3c21e49
    • Frank Munzert's avatar
      [S390] tape block: complete request with correct locking · 7a4a1ccd
      Frank Munzert authored
      
      
      __blk_end_request must be called with request queue lock held. We need to use
      blk_end_request rather than  __blk_end_request.
      Signed-off-by: default avatarFrank Munzert <munzert@de.ibm.com>
      Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
      7a4a1ccd
    • Jan Glauber's avatar
      [S390] qdio: remove incorrect memset · 2c780914
      Jan Glauber authored
      
      
      Remove the memset since zeroing the string is not needed and use
      snprintf instead of sprintf.
      Signed-off-by: default avatarJan Glauber <jang@linux.vnet.ibm.com>
      Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
      2c780914
    • Jan Glauber's avatar
      [S390] qdio: prevent double qdio shutdown in case of I/O errors · 7c045aa2
      Jan Glauber authored
      
      
      In case of I/O errors on a qdio subchannel qdio_shutdown may be
      called twice by the qdio driver and by zfcp. Remove the
      superfluous shutdown from qdio and let the upper layer driver
      handle the error condition.
      Signed-off-by: default avatarJan Glauber <jang@linux.vnet.ibm.com>
      Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
      7c045aa2
  3. 27 Oct, 2008 4 commits
  4. 21 Oct, 2008 6 commits
  5. 17 Oct, 2008 1 commit
  6. 16 Oct, 2008 2 commits
  7. 13 Oct, 2008 6 commits
  8. 10 Oct, 2008 15 commits