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

   1 From f285cba93ac9425078740d20456f34c94ad7511c Mon Sep 17 00:00:00 2001
   2 From: Dom Cobley <popcornmix@gmail.com>
   3 Date: Thu, 13 Jan 2022 15:47:23 +0000
   4 Subject: [PATCH] drm/vc4: hdmi: Fix clock value used for validating
   5  hdmi modes
   6
   7 We are using mode->crt_clock here which is filled by drm_mode_set_crtcinfo()
   8 which is called right after .mode_valid.
   9
  10 Use mode->clock which is valid here.
  11
  12 Fixes: 624d93a4f0 ("drm/vc4: hdmi: Move clock calculation into its own function")
  13
  14 Signed-off-by: Dom Cobley <popcornmix@gmail.com>
  15 ---
  16  drivers/gpu/drm/vc4/vc4_hdmi.c | 2 +-
  17  1 file changed, 1 insertion(+), 1 deletion(-)
  18
  19 --- a/drivers/gpu/drm/vc4/vc4_hdmi.c
  20 +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
  21 @@ -1497,7 +1497,7 @@ vc4_hdmi_encoder_compute_mode_clock(cons
  22                                     unsigned int bpc,
  23                                     enum vc4_hdmi_output_format fmt)
  24  {
  25 -       unsigned long long clock = mode->crtc_clock * 1000;
  26 +       unsigned long long clock = mode->clock * 1000;
  27
  28         if (mode->flags & DRM_MODE_FLAG_DBLCLK)
  29                 clock = clock * 2;