linux-kernel - [PATCH] staging: ft1000: dont cast void* from kmalloc()

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Date:	Sat, 13 Aug 2011 11:31:48 +0200
From:	Thomas Meyer <thomas@...3r.de>
To:	Greg Kroah-Hartman <gregkh@...e.de>, devel@...verdev.osuosl.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] staging: ft1000: dont cast void* from kmalloc()

From: Thomas Meyer <thomas@...3r.de>

 Casting (void *) value returned by kmalloc is useless
 as mentioned in Documentation/CodingStyle, Chap 14.

 The semantic patch that makes this output is available
 in scripts/coccinelle/api/alloc/drop_kmalloc_cast.cocci.

 More information about semantic patching is available at
 http://coccinelle.lip6.fr/

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

diff -u -p a/drivers/staging/ft1000/ft1000-usb/ft1000_hw.c b/drivers/staging/ft1000/ft1000-usb/ft1000_hw.c
--- a/drivers/staging/ft1000/ft1000-usb/ft1000_hw.c 2011-07-26 00:46:09.646838687 +0200
+++ b/drivers/staging/ft1000/ft1000-usb/ft1000_hw.c 2011-08-01 19:56:17.237666237 +0200
@@ -485,7 +485,7 @@ void card_send_command(struct ft1000_dev
 
 	DEBUG("card_send_command: enter card_send_command... size=%d\n", size);
 
-	commandbuf = (unsigned char *)kmalloc(size + 2, GFP_KERNEL);
+	commandbuf = kmalloc(size + 2, GFP_KERNEL);
 	memcpy((void *)commandbuf + 2, (void *)ptempbuffer, size);
 
 	ft1000_read_register(ft1000dev, &temp, FT1000_REG_DOORBELL);


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