diff options
author | Peter Ujfalusi <peter.ujfalusi@ti.com> | 2017-09-29 14:49:49 +0300 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-03-24 10:57:35 +0100 |
commit | 8abf722326dee57e29ef94ae9828ca123efb1934 (patch) | |
tree | 422fbb3501ad322c897cd32f654135a3797a3b16 | |
parent | 7b6d24e43fb39e4bbc3013c10e1d32bc796f32f8 (diff) |
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>
-rw-r--r-- | drivers/gpu/drm/omapdrm/omap_dmm_tiler.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/omapdrm/omap_dmm_tiler.c b/drivers/gpu/drm/omapdrm/omap_dmm_tiler.c index 56c60552abba..f732d4ce7e4f 100644 --- a/drivers/gpu/drm/omapdrm/omap_dmm_tiler.c +++ b/drivers/gpu/drm/omapdrm/omap_dmm_tiler.c @@ -280,7 +280,12 @@ static int dmm_txn_commit(struct dmm_txn *txn, bool wait) msecs_to_jiffies(1)) <= 0) { dev_err(dmm->dev, "timed out waiting for done\n"); ret = -ETIMEDOUT; + goto cleanup; } + + /* Check the engine status before continue */ + ret = wait_status(engine, DMM_PATSTATUS_READY | + DMM_PATSTATUS_VALID | DMM_PATSTATUS_DONE); } cleanup: |