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| author |   Gerd Hoffmann <kraxel@redhat.com> | 2018-09-07 09:32:13 +0200 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2018-09-10 07:10:36 +0200 |
| commit | eae06120f1974e1a4cab0f80f4b07d27eb80ab32 (patch) | |
| tree | f2bf19a6891b5b6426e7743ed73f8ae0ac1a32ec /drivers/gpu/drm/drm_crtc_internal.h | |
| parent | drm/virtio: Remove set but not used variable 'bo' (diff) | |
| download | linux-dev-eae06120f1974e1a4cab0f80f4b07d27eb80ab32.tar.xz linux-dev-eae06120f1974e1a4cab0f80f4b07d27eb80ab32.zip | |
drm: refuse ADDFB2 ioctl for broken bigendian drivers
Drivers must set the quirk_addfb_prefer_host_byte_order quirk to make
the drm_mode_addfb() compat code work correctly on bigendian machines.
If they don't they interpret pixel_format values incorrectly for bug
compatibility, which in turn implies the ADDFB2 ioctl does not work
correctly then. So block it to make userspace fallback to ADDFB.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20180907073213.20410-1-kraxel@redhat.com
Diffstat (limited to 'drivers/gpu/drm/drm_crtc_internal.h')
| -rw-r--r-- | drivers/gpu/drm/drm_crtc_internal.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/gpu/drm/drm_crtc_internal.h b/drivers/gpu/drm/drm_crtc_internal.h index ede20b55d50c..86893448f486 100644 --- a/drivers/gpu/drm/drm_crtc_internal.h +++ b/drivers/gpu/drm/drm_crtc_internal.h @@ -182,6 +182,8 @@ void drm_fb_release(struct drm_file *file_priv); int drm_mode_addfb(struct drm_device *dev, struct drm_mode_fb_cmd *or, struct drm_file *file_priv); +int drm_mode_addfb2(struct drm_device *dev, + void *data, struct drm_file *file_priv); int drm_mode_rmfb(struct drm_device *dev, u32 fb_id, struct drm_file *file_priv); @@ -189,8 +191,8 @@ int drm_mode_rmfb(struct drm_device *dev, u32 fb_id, /* IOCTL */ int drm_mode_addfb_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); -int drm_mode_addfb2(struct drm_device *dev, - void *data, struct drm_file *file_priv); +int drm_mode_addfb2_ioctl(struct drm_device *dev, + void *data, struct drm_file *file_priv); int drm_mode_rmfb_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); int drm_mode_getfb(struct drm_device *dev, |