From: Kieran Bingham kieran.bingham+renesas@ideasonboard.com
To allow dual pipelines utilising two WPF entities when available, the VSP was updated to support header-mode display list in continuous pipelines.
A small bug in the status check of the command register causes the second pipeline to be directly afflicted by the running of the first; appearing as a perceived performance issue with stuttering display.
Fix the vsp1_dl_list_hw_update_pending() call to ensure that the read comparison corresponds to the correct pipeline.
Fixes: eaf4bfad6ad8 ("v4l: vsp1: Add support for header display lists in continuous mode") Cc: "Stable v4.14+" stable@vger.kernel.org
Reviewed-by: Laurent Pinchart laurent.pinchart@ideasonboard.com Signed-off-by: Kieran Bingham kieran.bingham+renesas@ideasonboard.com --- drivers/media/platform/vsp1/vsp1_dl.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/media/platform/vsp1/vsp1_dl.c b/drivers/media/platform/vsp1/vsp1_dl.c index 8cd03ee45f79..34b5ed2592f8 100644 --- a/drivers/media/platform/vsp1/vsp1_dl.c +++ b/drivers/media/platform/vsp1/vsp1_dl.c @@ -509,7 +509,8 @@ static bool vsp1_dl_list_hw_update_pending(struct vsp1_dl_manager *dlm) return !!(vsp1_read(vsp1, VI6_DL_BODY_SIZE) & VI6_DL_BODY_SIZE_UPD); else - return !!(vsp1_read(vsp1, VI6_CMD(dlm->index) & VI6_CMD_UPDHDR)); + return !!(vsp1_read(vsp1, VI6_CMD(dlm->index)) + & VI6_CMD_UPDHDR); }
static bool vsp1_dl_hw_active(struct vsp1_dl_manager *dlm)