torvalds/linux
torvalds/linux
2
0
Fork 0
mirror of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2025-09-04 20:19:47 +08:00
Code

drm/amd/display: Don't print errors for nonexistent connectors

Browse Source 
When getting the number of connectors, the VBIOS reports
the number of valid indices, but it doesn't say which indices
are valid, and not every valid index has an actual connector.
If we don't find a connector on an index, that is not an error.

Considering these are not actual errors, don't litter the logs.

Fixes: 60df562814 ("drm/amd/display: handle invalid connector indices")
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Rodrigo Siqueira <siqueira@igalia.com>
Reviewed-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 249d4bc5f1935f04bb45b3b63c0f8922565124f7)
This commit is contained in:
Timur Kristóf 2025-07-31 11:43:51 +02:00 committed by Alex Deucher
parent 8246147f1f
commit f14ee2e7a8
2 changed files with 15 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/gpu/drm/amd/display/dc/bios/bios_parser.c
View File

@ -174,11 +174,8 @@ static struct graphics_object_id bios_parser_get_connector_id(
return object_id;
}
if (tbl->ucNumberOfObjects <= i) {
dm_error("Can't find connector id %d in connector table of size %d.\n",
i, tbl->ucNumberOfObjects);
if (tbl->ucNumberOfObjects <= i)
return object_id;
}
id = le16_to_cpu(tbl->asObjects[i].usObjectID);
object_id = object_id_from_bios_object_id(id);

15
drivers/gpu/drm/amd/display/dc/core/dc.c
View File

@ -217,11 +217,24 @@ static bool create_links(
connectors_num,
num_virtual_links);
// condition loop on link_count to allow skipping invalid indices
/* When getting the number of connectors, the VBIOS reports the number of valid indices,
* but it doesn't say which indices are valid, and not every index has an actual connector.
* So, if we don't find a connector on an index, that is not an error.
*
* - There is no guarantee that the first N indices will be valid
* - VBIOS may report a higher amount of valid indices than there are actual connectors
* - Some VBIOS have valid configurations for more connectors than there actually are
* on the card. This may be because the manufacturer used the same VBIOS for different
* variants of the same card.
*/
for (i = 0; dc->link_count < connectors_num && i < MAX_LINKS; i++) {
struct graphics_object_id connector_id = bios->funcs->get_connector_id(bios, i);
struct link_init_data link_init_params = {0};
struct dc_link *link;
if (connector_id.id == CONNECTOR_ID_UNKNOWN)
continue;
DC_LOG_DC("BIOS object table - printing link object info for connector number: %d, link_index: %d", i, dc->link_count);
link_init_params.ctx = dc->ctx;