From 9324410846e13595d453b7f34508b1f6b15fb1a7 Mon Sep 17 00:00:00 2001 From: Jayesh Choudhary Date: Thu, 13 Jun 2024 14:08:05 +0530 Subject: [PATCH] drm/bridge: sii902x: Add pixel clock check in atomic_check Check the pixel clock for the mode in atomic_check and ensure that it is within the range supported by the bridge. Signed-off-by: Jayesh Choudhary Reviewed-by: Aradhya Bhatia Reviewed-by: Dmitry Baryshkov Link: https://patchwork.freedesktop.org/patch/msgid/20240613083805.439337-4-j-choudhary@ti.com Signed-off-by: Maxime Ripard --- drivers/gpu/drm/bridge/sii902x.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/bridge/sii902x.c b/drivers/gpu/drm/bridge/sii902x.c index 00a8c469f553..7f91b0db161e 100644 --- a/drivers/gpu/drm/bridge/sii902x.c +++ b/drivers/gpu/drm/bridge/sii902x.c @@ -496,6 +496,10 @@ static int sii902x_bridge_atomic_check(struct drm_bridge *bridge, struct drm_crtc_state *crtc_state, struct drm_connector_state *conn_state) { + if (crtc_state->mode.clock < SII902X_MIN_PIXEL_CLOCK_KHZ || + crtc_state->mode.clock > SII902X_MAX_PIXEL_CLOCK_KHZ) + return -EINVAL; + /* * There might be flags negotiation supported in future but * set the bus flags in atomic_check statically for now. -- 2.25.1