[PATCH 6.10 304/809] drm/i915/display: Skip Panel Replay on pipe comparison if no active planes

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6.10-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jouni Högander <jouni.hogander@xxxxxxxxx>

[ Upstream commit 955446ed6e822b86751993bd69022d347b43a99e ]

Panel Replay is not enabled if there are no active planes. Do not compare
it on pipe comparison. Otherwise we get pipe mismatch.

Fixes: ac9ef327327b ("drm/i915/psr: Panel replay has to be enabled before link training")
Signed-off-by: Jouni Högander <jouni.hogander@xxxxxxxxx>
Reviewed-by: Animesh Manna <animesh.manna@xxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20240607134917.1327574-5-jouni.hogander@xxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/gpu/drm/i915/display/intel_display.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 0ae18b07ac87d..e53d3e900b3e4 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -5318,7 +5318,9 @@ intel_pipe_config_compare(const struct intel_crtc_state *current_config,
 	 * Panel replay has to be enabled before link training. PSR doesn't have
 	 * this requirement -> check these only if using panel replay
 	 */
-	if (current_config->has_panel_replay || pipe_config->has_panel_replay) {
+	if (current_config->active_planes &&
+	    (current_config->has_panel_replay ||
+	     pipe_config->has_panel_replay)) {
 		PIPE_CONF_CHECK_BOOL(has_psr);
 		PIPE_CONF_CHECK_BOOL(has_sel_update);
 		PIPE_CONF_CHECK_BOOL(enable_psr2_sel_fetch);
-- 
2.43.0







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