media: venus: flush all buffers in output plane streamoff

For scenarios, when source change is followed by VIDIOC_STREAMOFF
on output plane, driver should discard any queued OUTPUT
buffers, which are not decoded or dequeued.
Flush with HFI_FLUSH_INPUT does not have any actual impact.
So, fix it, by invoking HFI_FLUSH_ALL, which will flush all
queued buffers.

Fixes: 85872f8 ("media: venus: Mark last capture buffer")
Signed-off-by: Dikshita Agarwal <[email protected]>
Tested-by: Nathan Hebert <[email protected]>
Reviewed-by: Bryan O'Donoghue <[email protected]>
Signed-off-by: Stanimir Varbanov <[email protected]>
Signed-off-by: Hans Verkuil <[email protected]>

Author: Dikshita Agarwal

drivers/media/platform/qcom/venus/vdec.c

@@ -1255,7 +1255,7 @@ static int vdec_stop_output(struct venus_inst *inst)
 		break;
 	case VENUS_DEC_STATE_INIT:
 	case VENUS_DEC_STATE_CAPTURE_SETUP:
-		ret = hfi_session_flush(inst, HFI_FLUSH_INPUT, true);
+		ret = hfi_session_flush(inst, HFI_FLUSH_ALL, true);
 		break;
 	default:
 		break;