diff options
| author | Daniel Stone <daniels@collabora.com> | 2018-03-20 22:58:39 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-03-28 18:22:59 +0200 |
| commit | 1554edbbb723218abc57bafb24a0c32102a1ba89 (patch) | |
| tree | 1270dbca36f209f4b088589db8a4318bce485ba9 /drivers | |
| parent | f6b53a429e65b5a68a20001d339cd5d1a14230a8 (diff) | |
drm: Reject getfb for multi-plane framebuffers
commit b24791fe00f8b089d5b10cb7bcc4e1ae88b4831b upstream.
getfb can only return a single plane, so reject attempts to use it with
multi-plane framebuffers.
Signed-off-by: Daniel Stone <daniels@collabora.com>
Reported-by: Daniel van Vugt <daniel.van.vugt@canonical.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Fixes: 308e5bcbdb10 ("drm: add an fb creation ioctl that takes a pixel format v5")
Cc: stable@vger.kernel.org # v3.3+
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=105518
Link: https://patchwork.freedesktop.org/patch/msgid/20180320225839.30905-1-daniels@collabora.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/drm_framebuffer.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_framebuffer.c b/drivers/gpu/drm/drm_framebuffer.c index 5e1f1e2deb52..343cb5fa9b03 100644 --- a/drivers/gpu/drm/drm_framebuffer.c +++ b/drivers/gpu/drm/drm_framebuffer.c @@ -458,6 +458,12 @@ int drm_mode_getfb(struct drm_device *dev, if (!fb) return -ENOENT; + /* Multi-planar framebuffers need getfb2. */ + if (fb->format->num_planes > 1) { + ret = -EINVAL; + goto out; + } + r->height = fb->height; r->width = fb->width; r->depth = fb->format->depth; @@ -481,6 +487,7 @@ int drm_mode_getfb(struct drm_device *dev, ret = -ENODEV; } +out: drm_framebuffer_put(fb); return ret; |