diff options
Diffstat (limited to 'linux-core/drm_dma.c')
| -rw-r--r-- | linux-core/drm_dma.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/linux-core/drm_dma.c b/linux-core/drm_dma.c index 7c1785b4..34ab5322 100644 --- a/linux-core/drm_dma.c +++ b/linux-core/drm_dma.c @@ -194,6 +194,13 @@ int DRM(irq_install)( drm_device_t *dev, int irq ) return -EINVAL; down( &dev->struct_sem ); + + /* Driver must have been initialized */ + if ( !dev->dev_private ) { + up( &dev->struct_sem ); + return -EINVAL; + } + if ( dev->irq ) { up( &dev->struct_sem ); return -EBUSY; |