[PATCH 12/12] drm/edid: reduce magic when updating the EDID block checksum

[Jani Nikula]

The code modifying the EDID block should not need to do tricks to fix
the checksum. We have a function for computing the checksum, use it.

Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula at intel.com>
---
 drivers/gpu/drm/drm_edid.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index d0a76781ed19..d2dfab28b5b7 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -1840,8 +1840,8 @@ static struct edid *edid_filter_invalid_blocks(const struct edid *edid,
 			memcpy(base++, block, EDID_LENGTH);
 	}
 
-	new->checksum += new->extensions - valid_extensions;
 	new->extensions = valid_extensions;
+	new->checksum = edid_block_compute_checksum(new);
 
 out:
 	kfree(edid);
-- 
2.30.2