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| author | Ben Skeggs <bskeggs@redhat.com> | 2011-12-16 14:11:46 +1000 |
|---|---|---|
| committer | Josh Boyer <jwboyer@redhat.com> | 2011-12-16 11:19:59 -0500 |
| commit | b126e8d9a5baebde99b158ab667021129a6e8e67 (patch) | |
| tree | d5374fa6e5b09edf1fac4dded2e0d7922689eec7 /drm-edid-try-harder-to-fix-up-broken-headers.patch | |
| parent | dd510300804dc2e8f2ab2b32471260df5d44d376 (diff) | |
| download | kernel-b126e8d9a5baebde99b158ab667021129a6e8e67.tar.gz kernel-b126e8d9a5baebde99b158ab667021129a6e8e67.tar.xz kernel-b126e8d9a5baebde99b158ab667021129a6e8e67.zip | |
drm: try harder to fix bad edids
Diffstat (limited to 'drm-edid-try-harder-to-fix-up-broken-headers.patch')
| -rw-r--r-- | drm-edid-try-harder-to-fix-up-broken-headers.patch | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/drm-edid-try-harder-to-fix-up-broken-headers.patch b/drm-edid-try-harder-to-fix-up-broken-headers.patch new file mode 100644 index 000000000..26660d767 --- /dev/null +++ b/drm-edid-try-harder-to-fix-up-broken-headers.patch @@ -0,0 +1,47 @@ +From 115cb7ab7d3b87fe43b1fe9b05ec894b1fcfb5cf Mon Sep 17 00:00:00 2001 +From: Adam Jackson <ajax@redhat.com> +Date: Wed, 7 Dec 2011 18:26:23 -0500 +Subject: [PATCH] drm/edid: Try harder to fix up broken headers + +There's no reason to force the first byte to be correct if we're already +scoring how correct the header is. + +See also: https://bugzilla.redhat.com/show_bug.cgi?id=722909 + +Signed-off-by: Adam Jackson <ajax@redhat.com> +--- + drivers/gpu/drm/drm_edid.c | 18 ++++++++---------- + 1 files changed, 8 insertions(+), 10 deletions(-) + +diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c +index 7425e5c..8b16a49 100644 +--- a/drivers/gpu/drm/drm_edid.c ++++ b/drivers/gpu/drm/drm_edid.c +@@ -154,16 +154,14 @@ drm_edid_block_valid(u8 *raw_edid) + int i; + u8 csum = 0; + struct edid *edid = (struct edid *)raw_edid; +- +- if (raw_edid[0] == 0x00) { +- int score = drm_edid_header_is_valid(raw_edid); +- if (score == 8) ; +- else if (score >= 6) { +- DRM_DEBUG("Fixing EDID header, your hardware may be failing\n"); +- memcpy(raw_edid, edid_header, sizeof(edid_header)); +- } else { +- goto bad; +- } ++ int score = drm_edid_header_is_valid(raw_edid); ++ ++ if (score == 8) ; ++ else if (score >= 6) { ++ DRM_DEBUG("Fixing EDID header, your hardware may be failing\n"); ++ memcpy(raw_edid, edid_header, sizeof(edid_header)); ++ } else { ++ goto bad; + } + + for (i = 0; i < EDID_LENGTH; i++) +-- +1.7.7.3 + |