openwrt/target/linux/bcm27xx/patches-5.15/950-0438-drm-vc4-Add-correc...

31 lines
968 B
Diff

From d58e0cb66d35de123f2219f4609f733e7a11a45d Mon Sep 17 00:00:00 2001
From: Dave Stevenson <dave.stevenson@raspberrypi.com>
Date: Thu, 15 Apr 2021 16:18:16 +0100
Subject: [PATCH] drm/vc4: Add correct stop condition to
vc4_dsi_encoder_disable iteration
vc4_dsi_encoder_disable is partially an open coded version of
drm_bridge_chain_disable, but it missed a termination condition
in the loop for ->disable which meant that no post_disable
calls were made.
Add in the termination clause.
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
---
drivers/gpu/drm/vc4/vc4_dsi.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/gpu/drm/vc4/vc4_dsi.c
+++ b/drivers/gpu/drm/vc4/vc4_dsi.c
@@ -803,6 +803,9 @@ static void vc4_dsi_encoder_disable(stru
list_for_each_entry_reverse(iter, &dsi->bridge_chain, chain_node) {
if (iter->funcs->disable)
iter->funcs->disable(iter);
+
+ if (iter == dsi->bridge)
+ break;
}
vc4_dsi_ulps(dsi, true);