diff options
Diffstat (limited to 'drivers/gpu/drm/drm_bufs.c')
| -rw-r--r-- | drivers/gpu/drm/drm_bufs.c | 34 |
1 files changed, 28 insertions, 6 deletions
diff --git a/drivers/gpu/drm/drm_bufs.c b/drivers/gpu/drm/drm_bufs.c index e407adb033e7..8ce9d73fab4f 100644 --- a/drivers/gpu/drm/drm_bufs.c +++ b/drivers/gpu/drm/drm_bufs.c @@ -28,15 +28,26 @@ * OTHER DEALINGS IN THE SOFTWARE. */ -#include <linux/vmalloc.h> -#include <linux/slab.h> -#include <linux/log2.h> #include <linux/export.h> +#include <linux/log2.h> +#include <linux/mm.h> +#include <linux/mman.h> +#include <linux/nospec.h> +#include <linux/slab.h> +#include <linux/uaccess.h> +#include <linux/vmalloc.h> + #include <asm/shmparam.h> -#include <drm/drmP.h> + +#include <drm/drm_agpsupport.h> +#include <drm/drm_device.h> +#include <drm/drm_drv.h> +#include <drm/drm_file.h> +#include <drm/drm_pci.h> +#include <drm/drm_print.h> + #include "drm_legacy.h" -#include <linux/nospec.h> static struct drm_map_list *drm_find_matching_map(struct drm_device *dev, struct drm_local_map *map) @@ -584,6 +595,14 @@ void drm_legacy_master_rmmaps(struct drm_device *dev, struct drm_master *master) mutex_unlock(&dev->struct_mutex); } +void drm_legacy_rmmaps(struct drm_device *dev) +{ + struct drm_map_list *r_list, *list_temp; + + list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head) + drm_legacy_rmmap(dev, r_list->map); +} + /* The rmmap ioctl appears to be unnecessary. All mappings are torn down on * the last close of the device, and this is necessary for cleanup when things * exit uncleanly. Therefore, having userland manually remove mappings seems @@ -1332,7 +1351,10 @@ static int copy_one_buf(void *data, int count, struct drm_buf_entry *from) .size = from->buf_size, .low_mark = from->low_mark, .high_mark = from->high_mark}; - return copy_to_user(to, &v, offsetof(struct drm_buf_desc, flags)); + + if (copy_to_user(to, &v, offsetof(struct drm_buf_desc, flags))) + return -EFAULT; + return 0; } int drm_legacy_infobufs(struct drm_device *dev, void *data, |