diff options
| author | Simon Ser <contact@emersion.fr> | 2021-02-23 20:53:50 +0100 |
|---|---|---|
| committer | Simon Ser <contact@emersion.fr> | 2021-02-28 21:07:48 +0100 |
| commit | 73137ace84bcb3acd156446abcbcf65034ff1f40 (patch) | |
| tree | 0150ac7f0bba06cadeae8a134c5bb8689dfe502b /backend | |
| parent | c5dad8b626539c0492f14075fec63bd0fb881e76 (diff) | |
backend/session: fix KMS device filtering
As explained in [1], user-space should perform a drmModeGetResources
call to figure out whether a device supports KMS.
[1]: https://gitlab.freedesktop.org/mesa/drm/-/merge_requests/127
Diffstat (limited to 'backend')
| -rw-r--r-- | backend/session/session.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/backend/session/session.c b/backend/session/session.c index a076543a..cfb69ac2 100644 --- a/backend/session/session.c +++ b/backend/session/session.c @@ -265,12 +265,20 @@ static struct wlr_device *open_if_kms(struct wlr_session *restrict session, return NULL; } - drmVersion *ver = drmGetVersion(dev->fd); - if (!ver) { + // The kernel errors out with EOPNOTSUPP if DRIVER_MODESET isn't set + drmModeRes *res = drmModeGetResources(dev->fd); + if (!res) { + if (errno != EOPNOTSUPP) { + wlr_log_errno(WLR_ERROR, "drmModeGetResources(%s) failed", path); + } + goto out_dev; + } + if (res->count_crtcs == 0) { + drmModeFreeResources(res); goto out_dev; } + drmModeFreeResources(res); - drmFreeVersion(ver); return dev; out_dev: |