CDC NCM: Use kzalloc rather than kmalloc followed by memset with 0

This considers some simple cases that are common and easy to validate
Note in particular that there are no ...s in the rule, so all of the
matched code has to be contiguous

The semantic patch that makes this change is available
in scripts/coccinelle/api/alloc/kzalloc-simple.cocci.

Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/usb/cdc_ncm.c b/drivers/net/usb/cdc_ncm.c
index f06fb78383a1b865b22c989661a1795f4d7f0368..009dd0f185355b4aa71eacdc1157f904565d248f 100644 (file)
--- a/drivers/net/usb/cdc_ncm.c
+++ b/drivers/net/usb/cdc_ncm.c
@@ -465,12 +465,10 @@ static int cdc_ncm_bind(struct usbnet *dev, struct usb_interface *intf)
        int temp;
        u8 iface_no;
 
-       ctx = kmalloc(sizeof(*ctx), GFP_KERNEL);
+       ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
        if (ctx == NULL)
                return -ENODEV;
 
-       memset(ctx, 0, sizeof(*ctx));
-
        init_timer(&ctx->tx_timer);
        spin_lock_init(&ctx->mtx);
        ctx->netdev = dev->net;