Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

[people/ms/linux.git] / drivers / net / usb / cdc_ncm.c

diff --git a/drivers/net/usb/cdc_ncm.c b/drivers/net/usb/cdc_ncm.c
index a187f08113ecbb77612dd11a2611d4649d79c47d..3b1ba823776842445b5d5b6a709c58208c357f2b 100644 (file)
--- a/drivers/net/usb/cdc_ncm.c
+++ b/drivers/net/usb/cdc_ncm.c
@@ -691,7 +691,6 @@ static void cdc_ncm_free(struct cdc_ncm_ctx *ctx)
 
 int cdc_ncm_bind_common(struct usbnet *dev, struct usb_interface *intf, u8 data_altsetting, int drvflags)
 {
-       const struct usb_cdc_union_desc *union_desc = NULL;
        struct cdc_ncm_ctx *ctx;
        struct usb_driver *driver;
        u8 *buf;
@@ -725,15 +724,16 @@ int cdc_ncm_bind_common(struct usbnet *dev, struct usb_interface *intf, u8 data_
        /* parse through descriptors associated with control interface */
        cdc_parse_cdc_header(&hdr, intf, buf, len);
 
-       ctx->data = usb_ifnum_to_if(dev->udev,
-                                   hdr.usb_cdc_union_desc->bSlaveInterface0);
+       if (hdr.usb_cdc_union_desc)
+               ctx->data = usb_ifnum_to_if(dev->udev,
+                                           hdr.usb_cdc_union_desc->bSlaveInterface0);
        ctx->ether_desc = hdr.usb_cdc_ether_desc;
        ctx->func_desc = hdr.usb_cdc_ncm_desc;
        ctx->mbim_desc = hdr.usb_cdc_mbim_desc;
        ctx->mbim_extended_desc = hdr.usb_cdc_mbim_extended_desc;
 
        /* some buggy devices have an IAD but no CDC Union */
-       if (!union_desc && intf->intf_assoc && intf->intf_assoc->bInterfaceCount == 2) {
+       if (!hdr.usb_cdc_union_desc && intf->intf_assoc && intf->intf_assoc->bInterfaceCount == 2) {
                ctx->data = usb_ifnum_to_if(dev->udev, intf->cur_altsetting->desc.bInterfaceNumber + 1);
                dev_dbg(&intf->dev, "CDC Union missing - got slave from IAD\n");
        }