linux-kernel - [PATCH 09/20] drivers/fpga/dfl-fme-pr.c: get rid of pointless access

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Message-Id: <20200509234557.1124086-9-viro@ZenIV.linux.org.uk>
Date:   Sun, 10 May 2020 00:45:46 +0100
From:   Al Viro <viro@...IV.linux.org.uk>
To:     linux-kernel@...r.kernel.org
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        linux-fsdevel@...r.kernel.org, Wu Hao <hao.wu@...el.com>
Subject: [PATCH 09/20] drivers/fpga/dfl-fme-pr.c: get rid of pointless access_ok()

From: Al Viro <viro@...iv.linux.org.uk>

followed by copy_from_user()

Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
---
 drivers/fpga/dfl-fme-pr.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/fpga/dfl-fme-pr.c b/drivers/fpga/dfl-fme-pr.c
index a233a53db708..1194c0e850e0 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.
-- 
2.11.0