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Subject: edid-decode: fix DisplayID checksum regression
Author: Hans Verkuil <hverk...@xs4all.nl>
Date: Fri Feb 21 00:02:06 2025 +0100
The checksums were always reported as incorrect due to a
regression from an earlier commit.
Fixes: 585835446777 ("edid-decode: fix buffer overread on displayid block
parsing")
Signed-off-by: Hans Verkuil <hverk...@xs4all.nl>
utils/edid-decode/parse-displayid-block.cpp | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
---
http://git.linuxtv.org/cgit.cgi/v4l-utils.git/commit/?id=7c8623efa8c3ce08cc0eef371cc4141344a7bd10
diff --git a/utils/edid-decode/parse-displayid-block.cpp
b/utils/edid-decode/parse-displayid-block.cpp
index c3f9c117fd32..a899a1d6d2fa 100644
--- a/utils/edid-decode/parse-displayid-block.cpp
+++ b/utils/edid-decode/parse-displayid-block.cpp
@@ -2186,7 +2186,7 @@ void edid_state::parse_displayid_block(const unsigned
char *x)
* (excluding DisplayID-in-EDID magic byte)
*/
data_block.clear();
- do_checksum(" ", x + 1, saved_length, x[2] + 4);
+ do_checksum(" ", x + 1, saved_length + 5, x[2] + 4);
unused_bytes = 0x7f - (1 + saved_length + 5);
if (!memchk(x + 1 + saved_length + 5, unused_bytes)) {
