drm: only disable atomic modesetting when WLR_DRM_NO_ATOMIC == 1
Don't allow any value of the env var to disable atomic mode setting.
@@ -32,7 +32,8 @@ bool check_drm_features(struct wlr_drm_backend *drm) {
return false;
}
- if (getenv("WLR_DRM_NO_ATOMIC")) {
+ const char *no_atomic = getenv("WLR_DRM_NO_ATOMIC");
+ if (no_atomic && strcmp(no_atomic, "1") == 0) {
wlr_log(L_DEBUG, "WLR_DRM_NO_ATOMIC set, forcing legacy DRM interface");
drm->iface = &legacy_iface;
} else if (drmSetClientCap(drm->fd, DRM_CLIENT_CAP_ATOMIC, 1)) {
