diff options
Diffstat (limited to 'drivers/char/drm/drm_ioctl.c')
-rw-r--r-- | drivers/char/drm/drm_ioctl.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/char/drm/drm_ioctl.c b/drivers/char/drm/drm_ioctl.c index 555f323b8a32..31dfe83141ea 100644 --- a/drivers/char/drm/drm_ioctl.c +++ b/drivers/char/drm/drm_ioctl.c | |||
@@ -331,21 +331,23 @@ int drm_setversion(DRM_IOCTL_ARGS) | |||
331 | int if_version; | 331 | int if_version; |
332 | drm_set_version_t __user *argp = (void __user *)data; | 332 | drm_set_version_t __user *argp = (void __user *)data; |
333 | 333 | ||
334 | DRM_COPY_FROM_USER_IOCTL(sv, argp, sizeof(sv)); | 334 | if (copy_from_user(&sv, argp, sizeof(sv))) |
335 | return -EFAULT; | ||
335 | 336 | ||
336 | retv.drm_di_major = DRM_IF_MAJOR; | 337 | retv.drm_di_major = DRM_IF_MAJOR; |
337 | retv.drm_di_minor = DRM_IF_MINOR; | 338 | retv.drm_di_minor = DRM_IF_MINOR; |
338 | retv.drm_dd_major = dev->driver->major; | 339 | retv.drm_dd_major = dev->driver->major; |
339 | retv.drm_dd_minor = dev->driver->minor; | 340 | retv.drm_dd_minor = dev->driver->minor; |
340 | 341 | ||
341 | DRM_COPY_TO_USER_IOCTL(argp, retv, sizeof(sv)); | 342 | if (copy_to_user(argp, &retv, sizeof(sv))) |
343 | return -EFAULT; | ||
342 | 344 | ||
343 | if (sv.drm_di_major != -1) { | 345 | if (sv.drm_di_major != -1) { |
344 | if (sv.drm_di_major != DRM_IF_MAJOR || | 346 | if (sv.drm_di_major != DRM_IF_MAJOR || |
345 | sv.drm_di_minor < 0 || sv.drm_di_minor > DRM_IF_MINOR) | 347 | sv.drm_di_minor < 0 || sv.drm_di_minor > DRM_IF_MINOR) |
346 | return EINVAL; | 348 | return EINVAL; |
347 | if_version = DRM_IF_VERSION(sv.drm_di_major, sv.drm_di_minor); | 349 | if_version = DRM_IF_VERSION(sv.drm_di_major, sv.drm_di_minor); |
348 | dev->if_version = DRM_MAX(if_version, dev->if_version); | 350 | dev->if_version = max(if_version, dev->if_version); |
349 | if (sv.drm_di_minor >= 1) { | 351 | if (sv.drm_di_minor >= 1) { |
350 | /* | 352 | /* |
351 | * Version 1.1 includes tying of DRM to specific device | 353 | * Version 1.1 includes tying of DRM to specific device |