[PATCH] USB: fix drivers/usb/gadget/ether.c compile error

This fixes a compile glitch with CONFIG_USB_ETH_RNDIS disabled, and
replaces some inline #ifdeffery (and other code) with inline functions
which can evaluate to constants.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 21 insertions, 32 deletions

diff --git a/drivers/usb/gadget/ether.c b/drivers/usb/gadget/ether.c
index 9f8413e3c10..86affef226e 100644
--- a/drivers/usb/gadget/ether.c
+++ b/drivers/usb/gadget/ether.c
@@ -91,12 +91,12 @@ static const char driver_desc [] = DRIVER_DESC;
 
 #define RX_EXTRA        20              /* guard against rx overflows */
 
-#ifdef  CONFIG_USB_ETH_RNDIS
 #include "rndis.h"
-#else
-#define rndis_init()    0
-#define rndis_uninit(x) do{}while(0)
-#define rndis_exit()    do{}while(0)
+
+#ifndef CONFIG_USB_ETH_RNDIS
+#define rndis_uninit(x)         do{}while(0)
+#define rndis_deregister(c)     do{}while(0)
+#define rndis_exit()            do{}while(0)
 #endif
 
 /* CDC and RNDIS support the same host-chosen outgoing packet filters. */
@@ -1133,9 +1133,9 @@ eth_set_config (struct eth_dev *dev, unsigned number, int gfp_flags)
                 dev->config = number;
                 INFO (dev, "%s speed config #%d: %d mA, %s, using %s\n",
                                 speed, number, power, driver_desc,
-                                dev->rndis
+                                rndis_active(dev)
                                         ? "RNDIS"
-                                        : (dev->cdc
+                                        : (cdc_active(dev)
                                                 ? "CDC Ethernet"
                                                 : "CDC Ethernet Subset"));
         }
@@ -1350,7 +1350,7 @@ eth_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
                                 || !dev->config
                                 || wIndex > 1)
                         break;
-                if (!dev->cdc && wIndex != 0)
+                if (!cdc_active(dev) && wIndex != 0)
                         break;
                 spin_lock (&dev->lock);
 
@@ -1420,11 +1420,11 @@ done_set_intf:
                                 || !dev->config
                                 || wIndex > 1)
                         break;
-                if (!(dev->cdc || dev->rndis) && wIndex != 0)
+                if (!(cdc_active(dev) || rndis_active(dev)) && wIndex != 0)
                         break;
 
                 /* for CDC, iff carrier is on, data interface is active. */
-                if (dev->rndis || wIndex != 1)
+                if (rndis_active(dev) || wIndex != 1)
                         *(u8 *)req->buf = 0;
                 else
                         *(u8 *)req->buf = netif_carrier_ok (dev->net) ? 1 : 0;
@@ -1437,8 +1437,7 @@ done_set_intf:
                  * wValue = packet filter bitmap
                  */
                 if (ctrl->bRequestType != (USB_TYPE_CLASS|USB_RECIP_INTERFACE)
-                                || !dev->cdc
-                                || dev->rndis
+                                || !cdc_active(dev)
                                 || wLength != 0
                                 || wIndex > 1)
                         break;
@@ -1462,7 +1461,7 @@ done_set_intf:
          */
         case USB_CDC_SEND_ENCAPSULATED_COMMAND:
                 if (ctrl->bRequestType != (USB_TYPE_CLASS|USB_RECIP_INTERFACE)
-                                || !dev->rndis
+                                || !rndis_active(dev)
                                 || wLength > USB_BUFSIZ
                                 || wValue
                                 || rndis_control_intf.bInterfaceNumber
@@ -1477,7 +1476,7 @@ done_set_intf:
         case USB_CDC_GET_ENCAPSULATED_RESPONSE:
                 if ((USB_DIR_IN|USB_TYPE_CLASS|USB_RECIP_INTERFACE)
                                         == ctrl->bRequestType
-                                && dev->rndis
+                                && rndis_active(dev)
                                 // && wLength >= 0x0400
                                 && !wValue
                                 && rndis_control_intf.bInterfaceNumber
@@ -1661,11 +1660,9 @@ static void rx_complete (struct usb_ep *ep, struct usb_request *req)
         /* normal completion */
         case 0:
                 skb_put (skb, req->actual);
-#ifdef CONFIG_USB_ETH_RNDIS
                 /* we know MaxPacketsPerTransfer == 1 here */
-                if (dev->rndis)
+                if (rndis_active(dev))
                         status = rndis_rm_hdr (skb);
-#endif
                 if (status < 0
                                 || ETH_HLEN > skb->len
                                 || skb->len > ETH_FRAME_LEN) {
@@ -1893,8 +1890,7 @@ static int eth_start_xmit (struct sk_buff *skb, struct net_device *net)
          * or the hardware can't use skb buffers.
          * or there's not enough space for any RNDIS headers we need
          */
-#ifdef CONFIG_USB_ETH_RNDIS
-        if (dev->rndis) {
+        if (rndis_active(dev)) {
                 struct sk_buff  *skb_rndis;
 
                 skb_rndis = skb_realloc_headroom (skb,
@@ -1907,7 +1903,6 @@ static int eth_start_xmit (struct sk_buff *skb, struct net_device *net)
                 rndis_add_hdr (skb);
                 length = skb->len;
         }
-#endif
         req->buf = skb->data;
         req->context = skb;
         req->complete = tx_complete;
@@ -1940,9 +1935,7 @@ static int eth_start_xmit (struct sk_buff *skb, struct net_device *net)
         }
 
         if (retval) {
-#ifdef CONFIG_USB_ETH_RNDIS
 drop:
-#endif
                 dev->stats.tx_dropped++;
                 dev_kfree_skb_any (skb);
                 spin_lock_irqsave (&dev->lock, flags);
@@ -2023,6 +2016,10 @@ static int rndis_control_ack (struct net_device *net)
         return 0;
 }
 
+#else
+
+#define rndis_control_ack       NULL
+
 #endif  /* RNDIS */
 
 static void eth_start (struct eth_dev *dev, int gfp_flags)
@@ -2035,14 +2032,12 @@ static void eth_start (struct eth_dev *dev, int gfp_flags)
         /* and open the tx floodgates */ 
         atomic_set (&dev->tx_qlen, 0);
         netif_wake_queue (dev->net);
-#ifdef CONFIG_USB_ETH_RNDIS
-        if (dev->rndis) {
+        if (rndis_active(dev)) {
                 rndis_set_param_medium (dev->rndis_config,
                                         NDIS_MEDIUM_802_3,
                                         BITRATE(dev->gadget)/100);
                 (void) rndis_signal_connect (dev->rndis_config);
         }
-#endif  
 }
 
 static int eth_open (struct net_device *net)
@@ -2083,13 +2078,11 @@ static int eth_stop (struct net_device *net)
                 }
         }
         
-#ifdef  CONFIG_USB_ETH_RNDIS
-        if (dev->rndis) {
+        if (rndis_active(dev)) {
                 rndis_set_param_medium (dev->rndis_config,
                                         NDIS_MEDIUM_802_3, 0);
                 (void) rndis_signal_disconnect (dev->rndis_config);
         }
-#endif
 
         return 0;
 }
@@ -2127,10 +2120,8 @@ eth_unbind (struct usb_gadget *gadget)
         struct eth_dev          *dev = get_gadget_data (gadget);
 
         DEBUG (dev, "unbind\n");
-#ifdef CONFIG_USB_ETH_RNDIS
         rndis_deregister (dev->rndis_config);
         rndis_exit ();
-#endif
 
         /* we've already been disconnected ... no i/o is active */
         if (dev->req) {
@@ -2481,7 +2472,6 @@ autoconf_fail:
                         dev->host_mac [2], dev->host_mac [3],
                         dev->host_mac [4], dev->host_mac [5]);
 
-#ifdef  CONFIG_USB_ETH_RNDIS
         if (rndis) {
                 u32     vendorID = 0;
 
@@ -2509,7 +2499,6 @@ fail0:
                         goto fail0;
                 INFO (dev, "RNDIS ready\n");
         }
-#endif  
 
         return status;