diff options
| author | Deepak Rawat <drawat@vmware.com> | 2018-06-20 11:32:29 +0200 |
|---|---|---|
| committer | Thomas Hellstrom <thellstrom@vmware.com> | 2018-07-03 20:39:30 +0200 |
| commit | b89e5ff9eeeb8b1fe3d2d7477fb9e1c1aed5dd5b (patch) | |
| tree | 0ae81b27b297a1482b00587baceeebd451fa33f7 /drivers/gpu/drm/vmwgfx/vmwgfx_drv.h | |
| parent | 018f60b26602bb41b33139da3408224e36dfe02d (diff) | |
drm/vmwgfx: Use a mutex to protect gui positioning in vmw_display_unit
To avoid race condition between update_layout ioctl and modeset ioctl
for access to gui_x/y positioning added a new mutex
requested_layout_mutex.
Also used drm_for_each_connector_iter to iterate over connector list.
Signed-off-by: Deepak Rawat <drawat@vmware.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Diffstat (limited to 'drivers/gpu/drm/vmwgfx/vmwgfx_drv.h')
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_drv.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h index 769d72fabb56..a38318c3efe4 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h @@ -412,6 +412,15 @@ struct vmw_private { uint32_t num_displays; /* + * Currently requested_layout_mutex is used to protect the gui + * positionig state in display unit. With that use case currently this + * mutex is only taken during layout ioctl and atomic check_modeset. + * Other display unit state can be protected with this mutex but that + * needs careful consideration. + */ + struct mutex requested_layout_mutex; + + /* * Framebuffer info. */ |