From c19a4b38e4bbfa09d1a299a199e3bd7c60739e16 Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Thu, 7 May 2020 21:13:55 -0400
Subject: drm_read(): get rid of pointless access_ok()
Git-commit: a38547d435cd91060b0d07cc11e24eee4c3f31aa
Patch-mainline: v5.8-rc1
References: jsc#SLE-12680, jsc#SLE-12880, jsc#SLE-12882, jsc#SLE-12883, jsc#SLE-13496, jsc#SLE-15322
address is passed only to copy_to_user()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/drm_file.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/drivers/gpu/drm/drm_file.c b/drivers/gpu/drm/drm_file.c
index eb009d3ab48f..6a1f6c802415 100644
--- a/drivers/gpu/drm/drm_file.c
+++ b/drivers/gpu/drm/drm_file.c
@@ -569,9 +569,6 @@ ssize_t drm_read(struct file *filp, char __user *buffer,
struct drm_device *dev = file_priv->minor->dev;
ssize_t ret;
- if (!access_ok(buffer, count))
- return -EFAULT;
-
ret = mutex_lock_interruptible(&file_priv->event_read_lock);
if (ret)
return ret;
--
2.28.0