tree b9cdf451b48f25ad3752820463d0dc29f862b625
parent f967d104b661c25a9a396e42a1f8ebe3431adc23
author George Cherian <george.cherian@ti.com> 1393478080 +0530
committer Vinod Koul <vinod.koul@intel.com> 1394535163 +0530

dma: cppi41: start tear down only if channel is busy

Start the channel tear down only if the channel is busy, else just
bail out. In some cases its seen that by the time the tear down is
initiated the cppi completes the DMA, especially in ISOCH transfers.

Signed-off-by: George Cherian <george.cherian@ti.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>