linux-kernel - [PATCH] staging: dgrp: Drop unnecessary typecast

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Message-Id: <1362080817-2098-1-git-send-email-linux@roeck-us.net>
Date:	Thu, 28 Feb 2013 11:46:57 -0800
From:	Guenter Roeck <linux@...ck-us.net>
To:	devel@...verdev.osuosl.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org, Guenter Roeck <linux@...ck-us.net>
Subject: [PATCH] staging: dgrp: Drop unnecessary typecast

An unnecessary typecast in dgrp_net_ops.c causes the following build error
if compiled with W=1.

In function ‘copy_from_user’, inlined from ‘dgrp_net_ioctl’ at
    drivers/staging/dgrp/dgrp_net_ops.c:3408:21:
    arch/x86/include/asm/uaccess_32.h:211:26: error: call to
    ‘copy_from_user_overflow’ declared with attribute error: copy_from_user()
    buffer size is not provably correct

Signed-off-by: Guenter Roeck <linux@...ck-us.net>
---
 drivers/staging/dgrp/dgrp_net_ops.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/dgrp/dgrp_net_ops.c b/drivers/staging/dgrp/dgrp_net_ops.c
index e6018823..f364e8e 100644
--- a/drivers/staging/dgrp/dgrp_net_ops.c
+++ b/drivers/staging/dgrp/dgrp_net_ops.c
@@ -3405,7 +3405,7 @@ static long dgrp_net_ioctl(struct file *file, unsigned int cmd,
 		if (size != sizeof(struct link_struct))
 			return -EINVAL;
 
-		if (copy_from_user((void *)(&link), (void __user *) arg, size))
+		if (copy_from_user(&link, (void __user *)arg, size))
 			return -EFAULT;
 
 		if (link.lk_fast_rate < 9600)
-- 
1.7.9.7

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