From: Al Viro <viro@zeniv.linux.org.uk>
Date: Thu, 23 Apr 2020 01:52:17 +0000 (-0400)
Subject: nvram: drop useless access_ok()
X-Git-Tag: v5.8-rc1~209^2~13
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=558cc8f7822ba25711142f5e7718be857b286793;p=users%2Fjedix%2Flinux-maple.git

nvram: drop useless access_ok()

we are using copy_to_user()/memdup_user() anyway

Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---

diff --git a/drivers/char/nvram.c b/drivers/char/nvram.c
index 4667844eee69..8206412d25ba 100644
--- a/drivers/char/nvram.c
+++ b/drivers/char/nvram.c
@@ -232,8 +232,6 @@ static ssize_t nvram_misc_read(struct file *file, char __user *buf,
 	ssize_t ret;
 
 
-	if (!access_ok(buf, count))
-		return -EFAULT;
 	if (*ppos >= nvram_size)
 		return 0;
 
@@ -264,8 +262,6 @@ static ssize_t nvram_misc_write(struct file *file, const char __user *buf,
 	char *tmp;
 	ssize_t ret;
 
-	if (!access_ok(buf, count))
-		return -EFAULT;
 	if (*ppos >= nvram_size)
 		return 0;