tree 3edc15618c60ba9092c7f0a6e5c676e2441b4916
parent 4ae338d139874259807f686738b02cb25a863535
author Peter Ujfalusi <peter.ujfalusi@ti.com> 1506685789 +0300
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1521885625 +0100

drm/omap: DMM: Check for DMM readiness after successful transaction commit


[ Upstream commit b7ea6b286c4051e043f691781785e3c4672f014a ]

Check the status of the DMM engine after it is reported that the
transaction was completed as in rare cases the engine might not reached a
working state.

The wait_status() will print information in case the DMM is not reached the
expected state and the dmm_txn_commit() will return with an error code to
make sure that we are not continuing with a broken setup.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>