netdev - [PATCH v2 1/4] Simplify usbnet_cdc_update

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Date:   Sat, 30 Jun 2018 19:32:23 +0200
From:   Miguel Rodríguez Pérez <miguel@....uvigo.gal>
To:     linux-usb@...r.kernel.org, netdev@...r.kernel.org
Subject: [PATCH v2 1/4] Simplify usbnet_cdc_update_filter

Remove some unneeded varibles to make the code easier to read
and, replace the generic usb_control_msg function for the
more specific usbnet_write_cmd.
---
 drivers/net/usb/cdc_ether.c | 15 +++++----------
 1 file changed, 5 insertions(+), 10 deletions(-)

diff --git a/drivers/net/usb/cdc_ether.c b/drivers/net/usb/cdc_ether.c
index 178b956501a7..815ed0dc18fe 100644
--- a/drivers/net/usb/cdc_ether.c
+++ b/drivers/net/usb/cdc_ether.c
@@ -77,9 +77,7 @@ 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;
+	struct net_device *net = dev->net;

 	u16 cdc_filter = USB_CDC_PACKET_TYPE_DIRECTED
 			| USB_CDC_PACKET_TYPE_BROADCAST;
@@ -93,16 +91,13 @@ static void usbnet_cdc_update_filter(struct usbnet *dev)
 	if (!netdev_mc_empty(net) || (net->flags & IFF_ALLMULTI))
 		cdc_filter |= USB_CDC_PACKET_TYPE_ALL_MULTICAST;

-	usb_control_msg(dev->udev,
-			usb_sndctrlpipe(dev->udev, 0),
+	usbnet_write_cmd(dev,
 			USB_CDC_SET_ETHERNET_PACKET_FILTER,
-			USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+			USB_TYPE_CLASS | USB_DIR_OUT | USB_RECIP_INTERFACE,
 			cdc_filter,
-			intf->cur_altsetting->desc.bInterfaceNumber,
+			dev->intf->cur_altsetting->desc.bInterfaceNumber,
 			NULL,
-			0,
-			USB_CTRL_SET_TIMEOUT
-		);
+			0);
 }

 /* probes control interface, claims data interface, collects the bulk
-- 
2.17.1

-- 
Miguel Rodríguez Pérez
Laboratorio de Redes
EE Telecomunicación – Universidade de Vigo