linux-kernel - [PATCH V2 4/4] zd1211rw: document need for kmalloc cast

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Date:	Sun, 28 Nov 2010 02:02:59 -0800
From:	Joe Perches <joe@...ches.com>
To:	Johannes Berg <johannes@...solutions.net>
Cc:	Daniel Drake <dsd@...too.org>, Ulrich Kunitz <kune@...ne-taler.de>,
	linux-wireless@...r.kernel.org,
	"John W. Linville" <linville@...driver.com>,
	linux-kernel@...r.kernel.org, netdev <netdev@...r.kernel.org>
Subject: [PATCH V2 4/4] zd1211rw: document need for kmalloc cast

Signed-off-by: Joe Perches <joe@...ches.com>
---

V2: Just document the need for the cast

diff --git a/drivers/net/wireless/zd1211rw/zd_chip.c b/drivers/net/wireless/zd1211rw/zd_chip.c
index 87a95bc..dd0bb0c 100644
--- a/drivers/net/wireless/zd1211rw/zd_chip.c
+++ b/drivers/net/wireless/zd1211rw/zd_chip.c
@@ -117,6 +117,7 @@ int zd_ioread32v_locked(struct zd_chip *chip, u32 *values, const zd_addr_t *addr
 
 	/* Allocate a single memory block for values and addresses. */
 	count16 = 2*count;
+	/* zd_addr_t is __nocast, so the kmalloc needs an explicit cast */
 	a16 = (zd_addr_t *) kmalloc(count16 * (sizeof(zd_addr_t) + sizeof(u16)),
 		                   GFP_KERNEL);
 	if (!a16) {


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