openwrt/target/linux/bcm27xx/patches-5.15/950-0655-drm-vc4-hdmi-Fix-clock-value-used-for-validating-hdm.patch

From f285cba93ac9425078740d20456f34c94ad7511c Mon Sep 17 00:00:00 2001
From: Dom Cobley <popcornmix@gmail.com>
Date: Thu, 13 Jan 2022 15:47:23 +0000
Subject: [PATCH] drm/vc4: hdmi: Fix clock value used for validating
 hdmi modes

We are using mode->crt_clock here which is filled by drm_mode_set_crtcinfo()
which is called right after .mode_valid.

Use mode->clock which is valid here.

Fixes: 624d93a4f0 ("drm/vc4: hdmi: Move clock calculation into its own function")

Signed-off-by: Dom Cobley <popcornmix@gmail.com>
---
 drivers/gpu/drm/vc4/vc4_hdmi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -1496,7 +1496,7 @@ vc4_hdmi_encoder_compute_mode_clock(cons
 				    unsigned int bpc,
 				    enum vc4_hdmi_output_format fmt)
 {
-	unsigned long long clock = mode->crtc_clock * 1000;
+	unsigned long long clock = mode->clock * 1000;
 
 	if (mode->flags & DRM_MODE_FLAG_DBLCLK)
 		clock = clock * 2;