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path: root/drivers/char/drm/drm_drv.c
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Diffstat (limited to 'drivers/char/drm/drm_drv.c')
-rw-r--r--drivers/char/drm/drm_drv.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/char/drm/drm_drv.c b/drivers/char/drm/drm_drv.c
index fc54140551a7..564138714bb5 100644
--- a/drivers/char/drm/drm_drv.c
+++ b/drivers/char/drm/drm_drv.c
@@ -470,17 +470,18 @@ int drm_ioctl(struct inode *inode, struct file *filp,
if ((nr >= DRM_COMMAND_BASE) && (nr < DRM_COMMAND_END) &&
(nr < DRM_COMMAND_BASE + dev->driver->num_ioctls))
ioctl = &dev->driver->ioctls[nr - DRM_COMMAND_BASE];
- else if ((nr >= DRM_COMMAND_END) || (nr < DRM_COMMAND_BASE))
+ else if ((nr >= DRM_COMMAND_END) || (nr < DRM_COMMAND_BASE)) {
ioctl = &drm_ioctls[nr];
- else
+ cmd = ioctl->cmd;
+ } else
goto err_i1;
+ /* Do not trust userspace, use our own definition */
func = ioctl->func;
/* is there a local override? */
if ((nr == DRM_IOCTL_NR(DRM_IOCTL_DMA)) && dev->driver->dma_ioctl)
func = dev->driver->dma_ioctl;
-
if (!func) {
DRM_DEBUG("no function\n");
retcode = -EINVAL;