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Revert "drm/radeon: properly handle vbios fake edid sizing"

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This reverts commit 103f1f860c.
This commit is contained in:
Ksawlii 2024-11-24 00:23:26 +01:00
parent 32d14f5d13
commit ee73a3644c
1 changed files with 13 additions and 16 deletions
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29
drivers/gpu/drm/radeon/radeon_atombios.c
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@ -1720,29 +1720,26 @@ struct radeon_encoder_atom_dig *radeon_atombios_get_lvds_info(struct
fake_edid_record = (ATOM_FAKE_EDID_PATCH_RECORD *)record;
if (fake_edid_record->ucFakeEDIDLength) {
struct edid *edid;
int edid_size;
if (fake_edid_record->ucFakeEDIDLength == 128)
edid_size = fake_edid_record->ucFakeEDIDLength;
else
edid_size = fake_edid_record->ucFakeEDIDLength * 128;
edid = kmemdup(&fake_edid_record->ucFakeEDIDString[0],
edid_size, GFP_KERNEL);
int edid_size =
max((int)EDID_LENGTH, (int)fake_edid_record->ucFakeEDIDLength);
edid = kmalloc(edid_size, GFP_KERNEL);
if (edid) {
memcpy((u8 *)edid, (u8 *)&fake_edid_record->ucFakeEDIDString[0],
fake_edid_record->ucFakeEDIDLength);
if (drm_edid_is_valid(edid)) {
rdev->mode_info.bios_hardcoded_edid = edid;
rdev->mode_info.bios_hardcoded_edid_size = edid_size;
} else {
} else
kfree(edid);
}
}
record += struct_size(fake_edid_record,
ucFakeEDIDString,
edid_size);
} else {
/* empty fake edid record must be 3 bytes long */
record += sizeof(ATOM_FAKE_EDID_PATCH_RECORD) + 1;
}
record += fake_edid_record->ucFakeEDIDLength ?
struct_size(fake_edid_record,
ucFakeEDIDString,
fake_edid_record->ucFakeEDIDLength) :
/* empty fake edid record must be 3 bytes long */
sizeof(ATOM_FAKE_EDID_PATCH_RECORD) + 1;
break;
case LCD_PANEL_RESOLUTION_RECORD_TYPE:
panel_res_record = (ATOM_PANEL_RESOLUTION_PATCH_RECORD *)record;