Hi Daniel,
On Tue, 2017-09-26 at 18:15 +0100, Daniel Stone wrote:
> Add a test environment variable to allow disabling atomic modesetting.
>
> > Signed-off-by: Daniel Stone <dani...@collabora.com>
> ---
> libweston/compositor-drm.c | 12 +++++++-----
> 1 file changed, 7 insertions(+), 5 deletions(-)
>
> diff --git a/libweston/compositor-drm.c b/libweston/compositor-drm.c
> index d04ba12f..8cd69f1f 100644
> --- a/libweston/compositor-drm.c
> +++ b/libweston/compositor-drm.c
> @@ -3240,11 +3240,13 @@ init_kms_caps(struct drm_backend *b)
> > b->universal_planes ? "supports" : "does not support");
>
> #ifdef HAVE_DRM_ATOMIC
> > - ret = drmGetCap(b->drm.fd, DRM_CAP_CRTC_IN_VBLANK_EVENT, &cap);
> > - if (ret != 0)
> > - cap = 0;
> > - ret = drmSetClientCap(b->drm.fd, DRM_CLIENT_CAP_ATOMIC, 1);
> > - b->atomic_modeset = ((ret == 0) && (cap == 1));
> > + if (!getenv("DRM_DISABLE_ATOMIC")) {
> > + ret = drmGetCap(b->drm.fd, DRM_CAP_CRTC_IN_VBLANK_EVENT, &cap);
> > + if (ret != 0)
> > + cap = 0;
> > + ret = drmSetClientCap(b->drm.fd, DRM_CLIENT_CAP_ATOMIC, 1);
> > + b->atomic_modeset = ((ret == 0) && (cap == 1));
> + {
^-- A typo here.
> #endif
> > weston_log("DRM: %s atomic modesetting\n",
> > b->atomic_modeset ? "supports" : "does not support");
regards
Philipp
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