1. 12 1月, 2010 4 次提交
  2. 31 12月, 2009 1 次提交
    • I
      dma-debug: Fix bug causing build warning · a8fe9ea2
      Ingo Molnar 提交于
      Stephen Rothwell reported the following build warning:
      
       lib/dma-debug.c: In function 'dma_debug_device_change':
       lib/dma-debug.c:680: warning: 'return' with no value, in function returning non-void
      
      Introduced by commit f797d988
      ("dma-debug: Do not add notifier when dma debugging is disabled").
      
      Return 0 [notify-done] when disabled. (this is standard bus notifier behavior.)
      Signed-off-by: NShaun Ruffell <sruffell@digium.com>
      Signed-off-by: NJoerg Roedel <joerg.roedel@amd.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: <stable@kernel.org>
      LKML-Reference: <20091231125624.GA14666@liondog.tnic>
      Signed-off-by: NIngo Molnar <mingo@elte.hu>
      a8fe9ea2
  3. 23 12月, 2009 1 次提交
  4. 21 12月, 2009 1 次提交
    • S
      dma-debug: Do not add notifier when dma debugging is disabled. · f797d988
      Shaun Ruffell 提交于
      If CONFIG_HAVE_DMA_API_DEBUG is defined and "dma_debug=off" is
      specified on the kernel command line, when you detach a driver from a
      device you can cause the following NULL pointer dereference:
      
      BUG: unable to handle kernel NULL pointer dereference at (null)
      IP: [<c0580d35>] dma_debug_device_change+0x5d/0x117
      
      The problem is that the dma_debug_device_change notifier function is
      added to the bus notifier chain even though the dma_entry_hash array
      was never initialized.  If dma debugging is disabled, this patch both
      prevents dma_debug_device_change notifiers from being added to the
      chain, and additionally ensures that the dma_debug_device_change
      notifier function is a no-op.
      
      Cc: stable@kernel.org
      Signed-off-by: NShaun Ruffell <sruffell@digium.com>
      Signed-off-by: NJoerg Roedel <joerg.roedel@amd.com>
      f797d988
  5. 18 12月, 2009 1 次提交
  6. 16 12月, 2009 24 次提交
  7. 15 12月, 2009 8 次提交