[PATCH v4 3/3] drm: Add EDID quirk for LG L246WP

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This display is apparently confused by any InfoFrames (see
https://bugzilla.redhat.com/show_bug.cgi?id=806091).

Tested on a ThinkPad T510 (nVidia GT218 [NVS 3100M]) and a co-
workers ThinkPad X220 with Intel graphics.  EDID_QUIRK_NO_AUDIO
makes this display work with the Intel driver; nouveau requires
EDID_QUIRK_DISABLE_INFOFRAMES.

Signed-off-by: Ian Pilcher <arequipeno@xxxxxxxxx>
Acked-by: Paul Menzel <paulepanter@xxxxxxxxxxxxxxxxxxxxx>
---
 drivers/gpu/drm/drm_edid.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 61586b4..1f50e09 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -160,6 +160,10 @@ union edid_quirk edid_quirk_list[EDID_QUIRK_LIST_SIZE] = {
 	{ { { { EDID_MFG_ID('V', 'S', 'C'), cpu_to_le16(5020) } },
 		EDID_QUIRK_FORCE_REDUCED_BLANKING } },
 
+	/* LG L246WP */
+	{ { { { EDID_MFG_ID('G', 'S', 'M'), cpu_to_le16(0x563f) } },
+		EDID_QUIRK_DISABLE_INFOFRAMES | EDID_QUIRK_NO_AUDIO } },
+
 	/*
 	 * When adding built-in quirks, please adjust EDID_QUIRK_LIST_SIZE to
 	 * provide some room for user-supplied quirks.
-- 
1.7.11.2

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