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Commit 6269591b authored by Vinod Koul's avatar Vinod Koul
Browse files

Documentation: dmaengine: clarify dma_slave_config expectations 



dma_slave_config is expected to be set for slave operations Only, not for
memcpy ones

Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
parent 6c04cd4f

Documentation/dmaengine/provider.txt

+4 −0
Original line number Diff line number Diff line
@@ -310,6 +310,10 @@ supported. 
     - Even though that structure contains a direction field, this

       field is deprecated in favor of the direction argument given to

       the prep_* functions

     - This call is mandatory for slave operations only. This should NOT be

       set or expected to be set for memcpy operations.

       If a driver support both, it should use this call for slave

       operations only and not for memcpy ones.



   * device_pause

     - Pauses a transfer on the channel