diff options
| author | Simon Ser <contact@emersion.fr> | 2022-06-07 11:54:57 +0200 |
|---|---|---|
| committer | Isaac Freund <mail@isaacfreund.com> | 2022-06-07 13:27:18 +0000 |
| commit | 1f96f388e9db8ca8b196fc9f72008094fd634177 (patch) | |
| tree | f7d32425720f6136108dedd4011ed4531316a2a2 /backend/drm/util.c | |
| parent | 1b27d537d13c25c622bf50b8b1670e5a40b944d1 (diff) | |
backend/drm: make serial optional
The EDID 1.4 spec says that the serial number is optional:
> If this field is not used, then enter “00h, 00h, 00h, 00h”.
Leave the wlr_output.serial field NULL in that case, and hide it
from the output description.
Diffstat (limited to 'backend/drm/util.c')
| -rw-r--r-- | backend/drm/util.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/backend/drm/util.c b/backend/drm/util.c index eb419092..b25d9c8c 100644 --- a/backend/drm/util.c +++ b/backend/drm/util.c @@ -86,7 +86,11 @@ void parse_edid(struct wlr_drm_connector *conn, size_t len, const uint8_t *data) uint32_t serial = data[12] | (data[13] << 8) | (data[14] << 8) | (data[15] << 8); char serial_str[32]; - snprintf(serial_str, sizeof(serial_str), "0x%08" PRIX32, serial); + if (serial != 0) { + snprintf(serial_str, sizeof(serial_str), "0x%08" PRIX32, serial); + } else { + serial_str[0] = '\0'; + } for (size_t i = 72; i <= 108; i += 18) { uint16_t flag = (data[i] << 8) | data[i + 1]; @@ -112,7 +116,9 @@ void parse_edid(struct wlr_drm_connector *conn, size_t len, const uint8_t *data) } output->model = strdup(model_str); - output->serial = strdup(serial_str); + if (output->serial[0] != '\0') { + output->serial = strdup(serial_str); + } } const char *conn_get_name(uint32_t type_id) { |