net: qmi_wwan: simplify a check in qmi_wwan_bind()

This code is easier to read if we specify which flags we want at the
condition instead of at the top of the function.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c
index 68ca676..484eaa5 100644 (file)
--- a/drivers/net/usb/qmi_wwan.c
+++ b/drivers/net/usb/qmi_wwan.c
@@ -129,7 +129,6 @@ static int qmi_wwan_bind(struct usbnet *dev, struct usb_interface *intf)
        struct usb_interface_descriptor *desc = &intf->cur_altsetting->desc;
        struct usb_cdc_union_desc *cdc_union = NULL;
        struct usb_cdc_ether_desc *cdc_ether = NULL;
-       u32 required = 1 << USB_CDC_HEADER_TYPE | 1 << USB_CDC_UNION_TYPE;
        u32 found = 0;
        struct usb_driver *driver = driver_of(intf);
        struct qmi_wwan_state *info = (void *)&dev->data;
@@ -197,7 +196,8 @@ next_desc:
        }
 
        /* did we find all the required ones? */
-       if ((found & required) != required) {
+       if (!(found & (1 << USB_CDC_HEADER_TYPE)) ||
+           !(found & (1 << USB_CDC_UNION_TYPE))) {
                dev_err(&intf->dev, "CDC functional descriptors missing\n");
                goto err;
        }