drm/edid: Iterate through all DispID ext blocks

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Apparently there are EDIDs in the wild with multiple DispID extension
blocks. Iterate through them all.

In one particular case the tile information is specicied in the
second DispID ext block, and since the current parser only looks
at the first DispID ext block we don't notice that we're dealing
with a tiled display.

While at it change a few functions to return void since we have
no use for the errno.

References: https://gitlab.freedesktop.org/drm/intel/-/issues/27
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200527130310.27099-2-ville.syrjala@linux.intel.com
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>

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This commit is contained in:

Ville Syrjälä 2020-05-27 16:03:09 +03:00

parent 8873cfa384

commit 7f261afdcf

1 changed files with 38 additions and 46 deletions

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drivers/gpu/drm/drm_edid.c

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