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drm_read(): get rid of pointless access_ok()

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address is passed only to copy_to_user()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2020-05-07 21:13:55 -04:00
parent d65aca9ff8
commit a38547d435
1 changed files with 0 additions and 3 deletions
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3
drivers/gpu/drm/drm_file.c
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@ -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;