[PATCH] usb/atm: Use FIELD_SIZEOF, trivial cleanup.

[Thiago Farina]

Signed-off-by: Thiago Farina <tfransosi@xxxxxxxxx>
---
 drivers/usb/atm/usbatm.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/usb/atm/usbatm.c b/drivers/usb/atm/usbatm.c
index fbea856..e78d735 100644
--- a/drivers/usb/atm/usbatm.c
+++ b/drivers/usb/atm/usbatm.c
@@ -1348,7 +1348,7 @@ static int __init usbatm_usb_init(void)
 {
 	dbg("%s: driver version %s", __func__, DRIVER_VERSION);
 
-	if (sizeof(struct usbatm_control) > sizeof(((struct sk_buff *) 0)->cb)) {
+	if (sizeof(struct usbatm_control) > FIELD_SIZEOF(struct sk_buff, cb)) {
 		printk(KERN_ERR "%s unusable with this kernel!\n", usbatm_driver_name);
 		return -EIO;
 	}
-- 
1.6.6.103.g699d2

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