zd1211rw: document need for kmalloc cast

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/wireless/zd1211rw/zd_chip.c b/drivers/net/wireless/zd1211rw/zd_chip.c
index 87a95bc..dd0bb0c 100644 (file)
--- 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) {