diff options
| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2018-04-24 16:02:50 +0300 |
|---|---|---|
| committer | Sean Paul <seanpaul@chromium.org> | 2018-04-25 22:03:13 +0300 |
| commit | 1f6b8eef11c3d097bc8a6b2bbb868eb47ec6f7d8 (patch) | |
| tree | 733fe38821e2be7a500a37560987e8c2a29f812c | |
| parent | d02d270014f70dcab0117776b81a37b6fca745ae (diff) | |
| download | linux-1f6b8eef11c3d097bc8a6b2bbb868eb47ec6f7d8.tar.xz | |
drm/edid: Reset more of the display info
We're currently failing to reset everything in display_info.hdmi
which will potentially cause us to use stale information when
swapping monitors. Eg. if the user replaces a HDMI 2.0 monitor
with a HDMI 1.x monitor we will continue to think that the monitor
supports scrambling. That will lead to a black screen since the
HDMI 1.x monitor won't understand the scrambled signal.
Fix the problem by clearing display_info.hdmi fully. And while at
eliminate some duplicated code by calling drm_reset_display_info()
in drm_add_display_info().
Cc: stable@vger.kernel.org
Cc: Antony Chen <antonychen@qnap.com>
Cc: Shashank Sharma <shashank.sharma@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=105655
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180424130250.7028-1-ville.syrjala@linux.intel.com
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Tested-by: Antony Chen <antonychen@qnap.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
| -rw-r--r-- | drivers/gpu/drm/drm_edid.c | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 134069f36482..39f1db4acda4 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -4451,6 +4451,7 @@ drm_reset_display_info(struct drm_connector *connector) info->max_tmds_clock = 0; info->dvi_dual = false; info->has_hdmi_infoframe = false; + memset(&info->hdmi, 0, sizeof(info->hdmi)); info->non_desktop = 0; } @@ -4462,17 +4463,11 @@ u32 drm_add_display_info(struct drm_connector *connector, const struct edid *edi u32 quirks = edid_get_quirks(edid); + drm_reset_display_info(connector); + info->width_mm = edid->width_cm * 10; info->height_mm = edid->height_cm * 10; - /* driver figures it out in this case */ - info->bpc = 0; - info->color_formats = 0; - info->cea_rev = 0; - info->max_tmds_clock = 0; - info->dvi_dual = false; - info->has_hdmi_infoframe = false; - info->non_desktop = !!(quirks & EDID_QUIRK_NON_DESKTOP); DRM_DEBUG_KMS("non_desktop set to %d\n", info->non_desktop); |