diff options
| -rw-r--r-- | drivers/gpu/drm/drm_edid.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index a71ed935f1c4..2c1d2e49fb6f 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -1014,6 +1014,16 @@ module_param_named(edid_fixup, edid_fixup, int, 0400); MODULE_PARM_DESC(edid_fixup, "Minimum number of valid EDID header bytes (0-8, default 6)"); +static int drm_edid_block_checksum(const u8 *raw_edid) +{ + int i; + u8 csum = 0; + for (i = 0; i < EDID_LENGTH; i++) + csum += raw_edid[i]; + + return csum; +} + static bool drm_edid_is_zero(const u8 *in_edid, int length) { if (memchr_inv(in_edid, 0, length)) @@ -1035,8 +1045,7 @@ static bool drm_edid_is_zero(const u8 *in_edid, int length) */ bool drm_edid_block_valid(u8 *raw_edid, int block, bool print_bad_edid) { - int i; - u8 csum = 0; + u8 csum; struct edid *edid = (struct edid *)raw_edid; if (WARN_ON(!raw_edid)) @@ -1056,8 +1065,7 @@ bool drm_edid_block_valid(u8 *raw_edid, int block, bool print_bad_edid) } } - for (i = 0; i < EDID_LENGTH; i++) - csum += raw_edid[i]; + csum = drm_edid_block_checksum(raw_edid); if (csum) { if (print_bad_edid) { DRM_ERROR("EDID checksum is invalid, remainder is %d\n", csum); |
