[PATCH] drm/compat: more dummy implementations

Daniel Vetter daniel.vetter at ffwll.ch
Mon Feb 22 10:06:08 UTC 2021


drm_noop really doesnt do much, and who cares about the permission checks.
So let's delete some code.

Signed-off-by: Daniel Vetter <daniel.vetter at intel.com>
---
 drivers/gpu/drm/drm_ioc32.c | 15 +++------------
 1 file changed, 3 insertions(+), 12 deletions(-)

diff --git a/drivers/gpu/drm/drm_ioc32.c b/drivers/gpu/drm/drm_ioc32.c
index dc734d4828a1..33390f02f5eb 100644
--- a/drivers/gpu/drm/drm_ioc32.c
+++ b/drivers/gpu/drm/drm_ioc32.c
@@ -302,12 +302,8 @@ static int compat_drm_getstats(struct file *file, unsigned int cmd,
 			       unsigned long arg)
 {
 	drm_stats32_t __user *argp = (void __user *)arg;
-	int err;
-
-	err = drm_ioctl_kernel(file, drm_noop, NULL, 0);
-	if (err)
-		return err;
 
+	/* getstats is defunct, just clear */
 	if (clear_user(argp, sizeof(drm_stats32_t)))
 		return -EFAULT;
 	return 0;
@@ -820,13 +816,8 @@ typedef struct drm_update_draw32 {
 static int compat_drm_update_draw(struct file *file, unsigned int cmd,
 				  unsigned long arg)
 {
-	drm_update_draw32_t update32;
-
-	if (copy_from_user(&update32, (void __user *)arg, sizeof(update32)))
-		return -EFAULT;
-
-	return drm_ioctl_kernel(file, drm_noop, NULL,
-				DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
+	/* update_draw is defunct */
+	return 0;
 }
 #endif
 
-- 
2.30.0



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