1. 13 1月, 2009 1 次提交
    • Y
      dmaengine: fix dependency chaining · dd59b853
      Yuri Tikhonov 提交于
      In dmaengine we track the dependencies between the descriptors
      using the 'next' pointers of the structure. These pointers are
      set to NULL as soon as the corresponding descriptor has been
      submitted to the channel (in dma_run_dependencies()).
      
      But, the first 'next' in chain is still remaining set, regardless
      the fact, that tx->next has been already submitted. This may lead to
      multiple submissions of the same descriptor. This patch fixes this.
      
      Actually, some previous implementation of the xxx_run_dependencies()
      function already had this fix in place. The fdb..0eaf3 commit, beside the
      correct things, broke this.
      
      Cc: <stable@kernel.org>
      Signed-off-by: NYuri Tikhonov <yur@emcraft.com>
      Signed-off-by: NDan Williams <dan.j.williams@intel.com>
      dd59b853
  2. 11 1月, 2009 4 次提交
  3. 10 1月, 2009 35 次提交