The display list headers are filled using information from the display
list only. Lower the display list manager spinlock contention by filling
the headers without holding the lock.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>
---
drivers/media/platform/vsp1/vsp1_dl.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/media/platform/vsp1/vsp1_dl.c b/drivers/media/platform/vsp1/vsp1_dl.c
index aaf17b13fd78..dc47e236c780 100644
--- a/drivers/media/platform/vsp1/vsp1_dl.c
+++ b/drivers/media/platform/vsp1/vsp1_dl.c
@@ -483,8 +483,6 @@ void vsp1_dl_list_commit(struct vsp1_dl_list *dl)
unsigned long flags;
bool update;
- spin_lock_irqsave(&dlm->lock, flags);
-
if (dl->dlm->mode == VSP1_DL_MODE_HEADER) {
struct vsp1_dl_list *dl_child;
@@ -501,7 +499,11 @@ void vsp1_dl_list_commit(struct vsp1_dl_list *dl)
vsp1_dl_list_fill_header(dl_child, last);
}
+ }
+ spin_lock_irqsave(&dlm->lock, flags);
+
+ if (dl->dlm->mode == VSP1_DL_MODE_HEADER) {
/*
* Commit the head display list to hardware. Chained headers
* will auto-start.
--
Regards,
Laurent Pinchart
