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backend: make attempt_drm_backend() return the primary backend 

We'll need this in the next commit.
This commit is contained in:
Simon Ser 2023-11-23 14:52:37 +01:00
parent a82fc4cb8f
commit be0b7845f7
1 changed files with 8 additions and 7 deletions
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15
backend/backend.c
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@ -195,19 +195,19 @@ static struct wlr_backend *attempt_headless_backend(
return backend; return backend;
} }
static bool attempt_drm_backend(struct wl_display *display, static struct wlr_backend *attempt_drm_backend(struct wl_display *display,
struct wlr_backend *backend, struct wlr_session *session) { struct wlr_backend *backend, struct wlr_session *session) {
#if WLR_HAS_DRM_BACKEND #if WLR_HAS_DRM_BACKEND
struct wlr_device *gpus[8]; struct wlr_device *gpus[8];
ssize_t num_gpus = wlr_session_find_gpus(session, 8, gpus); ssize_t num_gpus = wlr_session_find_gpus(session, 8, gpus);
if (num_gpus < 0) { if (num_gpus < 0) {
wlr_log(WLR_ERROR, "Failed to find GPUs"); wlr_log(WLR_ERROR, "Failed to find GPUs");
return false; return NULL;
} }
if (num_gpus == 0) { if (num_gpus == 0) {
wlr_log(WLR_ERROR, "Found 0 GPUs, cannot create backend"); wlr_log(WLR_ERROR, "Found 0 GPUs, cannot create backend");
return false; return NULL;
} else { } else {
wlr_log(WLR_INFO, "Found %zu GPUs", num_gpus); wlr_log(WLR_INFO, "Found %zu GPUs", num_gpus);
} }
@ -236,10 +236,10 @@ static bool attempt_drm_backend(struct wl_display *display,
drm_backend_monitor_create(backend, primary_drm, session, display); drm_backend_monitor_create(backend, primary_drm, session, display);
} }
return true; return primary_drm;
#else #else
wlr_log(WLR_ERROR, "Cannot create DRM backend: disabled at compile-time"); wlr_log(WLR_ERROR, "Cannot create DRM backend: disabled at compile-time");
return false; return NULL;
#endif #endif
} }
@ -277,7 +277,7 @@ static bool attempt_backend_by_name(struct wl_display *display,
backend = attempt_libinput_backend(display, *session_ptr); backend = attempt_libinput_backend(display, *session_ptr);
} else { } else {
// attempt_drm_backend() adds the multi drm backends itself // attempt_drm_backend() adds the multi drm backends itself
return attempt_drm_backend(display, multi, *session_ptr); return attempt_drm_backend(display, multi, *session_ptr) != NULL;
} }
} else { } else {
wlr_log(WLR_ERROR, "unrecognized backend '%s'", name); wlr_log(WLR_ERROR, "unrecognized backend '%s'", name);
@ -371,7 +371,8 @@ struct wlr_backend *wlr_backend_autocreate(struct wl_display *display,
goto error; goto error;
} }
if (!attempt_drm_backend(display, multi, session)) { struct wlr_backend *primary_drm = attempt_drm_backend(display, multi, session);
if (primary_drm == NULL) {
wlr_log(WLR_ERROR, "Failed to open any DRM device"); wlr_log(WLR_ERROR, "Failed to open any DRM device");
goto error; goto error;
} }