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| author | Ben Widawsky <ben@bwidawsk.net> | 2016-11-05 14:46:04 -0700 |
|---|---|---|
| committer | Ben Widawsky <ben@bwidawsk.net> | 2017-04-14 14:13:44 -0700 |
| commit | 6b082cca5fd2b0194ecd12140f7fa51838f9ab8d (patch) | |
| tree | 598fd71d75fffbde6f4adbae13d4b960af0a33cc /drm-legacy.c | |
| parent | ad3855b4605e781def437eb790f4dd350f2a5be2 (diff) | |
| download | kmscube-6b082cca5fd2b0194ecd12140f7fa51838f9ab8d.tar.gz | |
drm: Provide a failure path when getting the fb
This is helpful for debugging as you will bail early with an error
message instead of a random SIGSEGV (or something more obscure).
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Diffstat (limited to 'drm-legacy.c')
| -rw-r--r-- | drm-legacy.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drm-legacy.c b/drm-legacy.c index 3b407f8..a0b419a 100644 --- a/drm-legacy.c +++ b/drm-legacy.c @@ -60,6 +60,10 @@ static int legacy_run(const struct gbm *gbm, const struct egl *egl) eglSwapBuffers(egl->display, egl->surface); bo = gbm_surface_lock_front_buffer(gbm->surface); fb = drm_fb_get_from_bo(bo); + if (!fb) { + fprintf(stderr, "Failed to get a new framebuffer BO\n"); + return -1; + } /* set mode: */ ret = drmModeSetCrtc(drm.fd, drm.crtc_id, fb->fb_id, 0, 0, @@ -78,6 +82,10 @@ static int legacy_run(const struct gbm *gbm, const struct egl *egl) eglSwapBuffers(egl->display, egl->surface); next_bo = gbm_surface_lock_front_buffer(gbm->surface); fb = drm_fb_get_from_bo(next_bo); + if (!fb) { + fprintf(stderr, "Failed to get a new framebuffer BO\n"); + return -1; + } /* * Here you could also update drm plane layers if you want |