From: Al Viro <viro@zeniv.linux.org.uk>
Date: Thu, 23 Apr 2020 03:05:57 +0000 (-0400)
Subject: drivers/fpga/dfl-fme-pr.c: get rid of pointless access_ok()
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=c9a4bb416676dc1d67acc7fed51f77d8b371ab51;p=linux.git

drivers/fpga/dfl-fme-pr.c: get rid of pointless access_ok()

followed by copy_from_user()

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

diff --git a/drivers/fpga/dfl-fme-pr.c b/drivers/fpga/dfl-fme-pr.c
index a233a53db7081..1194c0e850e07 100644
--- a/drivers/fpga/dfl-fme-pr.c
+++ b/drivers/fpga/dfl-fme-pr.c
@@ -97,10 +97,6 @@ static int fme_pr(struct platform_device *pdev, unsigned long arg)
 		return -EINVAL;
 	}
 
-	if (!access_ok((void __user *)(unsigned long)port_pr.buffer_address,
-		       port_pr.buffer_size))
-		return -EFAULT;
-
 	/*
 	 * align PR buffer per PR bandwidth, as HW ignores the extra padding
 	 * data automatically.