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drm/edid: Skip empty CVT codepoints

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Signed-off-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Adam Jackson 2010-01-04 17:53:06 -05:00 committed by Dave Airlie
parent e6be8d9d17
commit 69da301589
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/drm_edid.c
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@ -911,11 +911,15 @@ static int drm_cvt_modes(struct drm_connector *connector,
struct drm_device *dev = connector->dev;
struct cvt_timing *cvt;
const int rates[] = { 60, 85, 75, 60, 50 };
const u8 empty[3] = { 0, 0, 0 };
for (i = 0; i < 4; i++) {
int uninitialized_var(width), height;
cvt = &(timing->data.other_data.data.cvt[i]);
if (!memcmp(cvt->code, empty, 3))
continue;
height = (cvt->code[0] + ((cvt->code[1] & 0xf0) << 8) + 1) * 2;
switch (cvt->code[1] & 0xc0) {
case 0x00: