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drm/i915/intel_sdvo: Check fixed_mode->clock against max_dotclock in mode_valid

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For LVDS SDVO, mode validation checks the requested mode against the
pipe max dotclock, but does not validate the selected fixed mode clock.

After intel_panel_mode_valid(), get the fixed mode and validate its
clock against the max dotclock.

Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Link: https://patch.msgid.link/20260430131220.3891497-2-ankit.k.nautiyal@intel.com
This commit is contained in:
Ankit Nautiyal 2026-04-30 18:42:16 +05:30
parent 0161e2c201
commit dae483da59
1 changed files with 6 additions and 0 deletions
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6
drivers/gpu/drm/i915/display/intel_sdvo.c
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@ -1967,10 +1967,16 @@ intel_sdvo_mode_valid(struct drm_connector *connector,
if (IS_LVDS(intel_sdvo_connector)) {
enum drm_mode_status status;
const struct drm_display_mode *fixed_mode;
status = intel_panel_mode_valid(&intel_sdvo_connector->base, mode);
if (status != MODE_OK)
return status;
fixed_mode = intel_panel_fixed_mode(&intel_sdvo_connector->base, mode);
if (fixed_mode && fixed_mode->clock > max_dotclk)
return MODE_CLOCK_HIGH;
}
return MODE_OK;