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drm/edid: Allow non-fatal checksum errors in CEA blocks

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Switches will try to update the topology address and not correctly fix
up the checksum, so just let it slide.

https://bugs.freedesktop.org/28229

Signed-off-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Adam Jackson 2010-05-25 16:33:09 -04:00 committed by Dave Airlie
parent 921d98b582
commit 4a638b4e38
1 changed files with 4 additions and 1 deletions
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5
drivers/gpu/drm/drm_edid.c
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@ -147,7 +147,10 @@ drm_edid_block_valid(u8 *raw_edid)
csum += raw_edid[i];
if (csum) {
DRM_ERROR("EDID checksum is invalid, remainder is %d\n", csum);
goto bad;
/* allow CEA to slide through, switches mangle this */
if (raw_edid[0] != 0x02)
goto bad;
}
/* per-block-type checks */