netdev - [PATCH v4 1/4] Use dev->intf to get interface information

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Message-Id: <20180702112833.9907-1-miguel@det.uvigo.gal>
Date:   Mon,  2 Jul 2018 13:28:33 +0200
From:   Miguel Rodríguez Pérez 
        <miguel@....uvigo.gal>
To:     oliver@...kum.org, linux-usb@...r.kernel.org,
        netdev@...r.kernel.org, gregkh@...uxfoundation.org
Cc:     Miguel Rodríguez Pérez 
        <miguel@....uvigo.gal>
Subject: [PATCH v4 1/4] Use dev->intf to get interface information

usbnet_cdc_update_filter was getting the interface number from the
usb_interface struct in cdc_state->control. However, cdc_ncm does
not initialize that structure in its bind function, but uses
cdc_ncm_cts instead. Getting intf directly from struct usbnet solves
the problem.

Signed-off-by: Miguel Rodríguez Pérez <miguel@....uvigo.gal>
---
 drivers/net/usb/cdc_ether.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/net/usb/cdc_ether.c b/drivers/net/usb/cdc_ether.c
index 178b956501a7..beac02cbde51 100644
--- a/drivers/net/usb/cdc_ether.c
+++ b/drivers/net/usb/cdc_ether.c
@@ -77,8 +77,6 @@ static const u8 mbm_guid[16] = {
 
 static void usbnet_cdc_update_filter(struct usbnet *dev)
 {
-	struct cdc_state	*info = (void *) &dev->data;
-	struct usb_interface	*intf = info->control;
 	struct net_device	*net = dev->net;
 
 	u16 cdc_filter = USB_CDC_PACKET_TYPE_DIRECTED
@@ -98,7 +96,7 @@ static void usbnet_cdc_update_filter(struct usbnet *dev)
 			USB_CDC_SET_ETHERNET_PACKET_FILTER,
 			USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 			cdc_filter,
-			intf->cur_altsetting->desc.bInterfaceNumber,
+			dev->intf->cur_altsetting->desc.bInterfaceNumber,
 			NULL,
 			0,
 			USB_CTRL_SET_TIMEOUT
-- 
2.17.1