dmaengine: pl330: fix residual for non-running BUSY descriptors

Browse source

Only one descriptor in the work list should be running at
any given time, but it's possible to have an enqueued BUSY
descriptor that has not yet transferred any data, or for
a BUSY descriptor to linger briefly before transitioning
to DONE. These cases should be handled to keep residual
calculations consistent even with the non-running BUSY
descriptors in the work list.

Signed-off-by: Stephen Barber <smbarber@chromium.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

...

This commit is contained in:

Stephen Barber 2016-08-18 17:59:59 -07:00 • committed by Vinod Koul

parent 29b4817d40

commit d64e9a2c75

1 changed files with 12 additions and 1 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

13

drivers/dma/pl330.c

View file