switch compat_drm_freebufs() to drm_ioctl_kernel()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --git a/drivers/gpu/drm/drm_ioc32.c b/drivers/gpu/drm/drm_ioc32.c
index 657fbe02ebd8d8818447a397df858a3ab38ae1b5..14eaa25ac3fc9b02072a7215c76f72a72be343d5 100644 (file)
--- a/drivers/gpu/drm/drm_ioc32.c
+++ b/drivers/gpu/drm/drm_ioc32.c
@@ -482,21 +482,15 @@ static int compat_drm_freebufs(struct file *file, unsigned int cmd,
                               unsigned long arg)
 {
        drm_buf_free32_t req32;
-       struct drm_buf_free __user *request;
+       struct drm_buf_free request;
        drm_buf_free32_t __user *argp = (void __user *)arg;
 
        if (copy_from_user(&req32, argp, sizeof(req32)))
                return -EFAULT;
 
-       request = compat_alloc_user_space(sizeof(*request));
-       if (!request)
-               return -EFAULT;
-       if (__put_user(req32.count, &request->count)
-           || __put_user((int __user *)(unsigned long)req32.list,
-                         &request->list))
-               return -EFAULT;
-
-       return drm_ioctl(file, DRM_IOCTL_FREE_BUFS, (unsigned long)request);
+       request.count = req32.count;
+       request.list = compat_ptr(req32.list);
+       return drm_ioctl_kernel(file, drm_legacy_freebufs, &request, DRM_AUTH);
 }
 
 typedef struct drm_ctx_priv_map32 {
@@ -1015,7 +1009,7 @@ static struct {
        DRM_IOCTL32_DEF(DRM_IOCTL_MARK_BUFS, compat_drm_markbufs),
        DRM_IOCTL32_DEF(DRM_IOCTL_INFO_BUFS, compat_drm_infobufs),
        [DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS32)].fn = compat_drm_mapbufs,
-       [DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS32)].fn = compat_drm_freebufs,
+       DRM_IOCTL32_DEF(DRM_IOCTL_FREE_BUFS, compat_drm_freebufs),
        [DRM_IOCTL_NR(DRM_IOCTL_RM_MAP32)].fn = compat_drm_rmmap,
        [DRM_IOCTL_NR(DRM_IOCTL_SET_SAREA_CTX32)].fn = compat_drm_setsareactx,
        [DRM_IOCTL_NR(DRM_IOCTL_GET_SAREA_CTX32)].fn = compat_drm_getsareactx,