linux-kernel - [PATCH] USB: Realtek cr: Use kmemdup rather than duplicating its implementation

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Date:	Thu, 10 Nov 2011 19:27:42 +0100
From:	Thomas Meyer <thomas@...3r.de>
To:	Matthew Dharm <mdharm-usb@...-eyed-alien.net>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	linux-kernel@...r.kernel.org
Subject: [PATCH] USB: Realtek cr: Use kmemdup rather than duplicating its
 implementation

Use kmemdup rather than duplicating its implementation

The semantic patch that makes this change is available
in scripts/coccinelle/api/memdup.cocci.

Signed-off-by: Thomas Meyer <thomas@...3r.de>
---

diff -u -p a/drivers/usb/storage/realtek_cr.c b/drivers/usb/storage/realtek_cr.c
--- a/drivers/usb/storage/realtek_cr.c 2011-11-07 19:38:15.850375635 +0100
+++ b/drivers/usb/storage/realtek_cr.c 2011-11-08 10:56:26.333926507 +0100
@@ -398,10 +398,9 @@ static int rts51x_write_mem(struct us_da
 	u8 cmnd[12] = { 0 };
 	u8 *buf;
 
-	buf = kmalloc(len, GFP_NOIO);
+	buf = kmemdup(data, len, GFP_NOIO);
 	if (buf == NULL)
 		return USB_STOR_TRANSPORT_ERROR;
-	memcpy(buf, data, len);
 
 	US_DEBUGP("%s, addr = 0x%x, len = %d\n", __func__, addr, len);
 


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