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Merge "drm/displayid: Iterate over all DisplayID blocks"

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Linux Build Service Account 2017-04-11 02:34:25 -07:00 • committed by Gerrit - the friendly Code Review server
commit f1283dace8
1 changed files with 20 additions and 12 deletions
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32
drivers/gpu/drm/drm_edid.c
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@ -4128,19 +4128,27 @@ static int drm_parse_display_id(struct drm_connector *connector,
if (ret)
return ret;
block = (struct displayid_block *)&displayid[idx + 4];
DRM_DEBUG_KMS("block id %d, rev %d, len %d\n",
block->tag, block->rev, block->num_bytes);
idx += sizeof(struct displayid_hdr);
while (block = (struct displayid_block *)&displayid[idx],
idx + sizeof(struct displayid_block) <= length &&
idx + sizeof(struct displayid_block) +
block->num_bytes <= length &&
block->num_bytes > 0) {
idx += block->num_bytes + sizeof(struct displayid_block);
DRM_DEBUG_KMS("block id 0x%x, rev %d, len %d\n",
block->tag, block->rev, block->num_bytes);
switch (block->tag) {
case DATA_BLOCK_TILED_DISPLAY:
ret = drm_parse_tiled_block(connector, block);
if (ret)
return ret;
break;
default:
printk("unknown displayid tag %d\n", block->tag);
break;
switch (block->tag) {
case DATA_BLOCK_TILED_DISPLAY:
ret = drm_parse_tiled_block(connector, block);
if (ret)
return ret;
break;
default:
DRM_DEBUG_KMS("found DisplayID tag 0x%x, unhandled\n",
block->tag);
break;
}
}
return 0;
}