rndis_host: Halt device if rndis_bind fails.

When bind fails after device was initialized, shutdown device properly
by sending RNDIS_MSG_HALT.

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Bjorge Dijkstra <bjd@jooz.net>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 9 insertions, 3 deletions

diff --git a/drivers/net/usb/rndis_host.c b/drivers/net/usb/rndis_host.c
index 42b161c9461..c6860250521 100644
--- a/drivers/net/usb/rndis_host.c
+++ b/drivers/net/usb/rndis_host.c
@@ -467,6 +467,7 @@ static int rndis_bind(struct usbnet *dev, struct usb_interface *intf)
                 struct rndis_query_c    *get_c;
                 struct rndis_set        *set;
                 struct rndis_set_c      *set_c;
+                struct rndis_halt       *halt;
         } u;
         u32                     tmp;
         int                     reply_len;
@@ -517,7 +518,7 @@ static int rndis_bind(struct usbnet *dev, struct usb_interface *intf)
                                 "dev can't take %u byte packets (max %u)\n",
                                 dev->hard_mtu, tmp);
                         retval = -EINVAL;
-                        goto fail_and_release;
+                        goto halt_fail_and_release;
                 }
                 dev->hard_mtu = tmp;
                 net->mtu = dev->hard_mtu - net->hard_header_len;
@@ -539,7 +540,7 @@ static int rndis_bind(struct usbnet *dev, struct usb_interface *intf)
                         48, (void **) &bp, &reply_len);
         if (unlikely(retval< 0)) {
                 dev_err(&intf->dev, "rndis get ethaddr, %d\n", retval);
-                goto fail_and_release;
+                goto halt_fail_and_release;
         }
         memcpy(net->dev_addr, bp, ETH_ALEN);
 
@@ -555,7 +556,7 @@ static int rndis_bind(struct usbnet *dev, struct usb_interface *intf)
         retval = rndis_command(dev, u.header);
         if (unlikely(retval < 0)) {
                 dev_err(&intf->dev, "rndis set packet filter, %d\n", retval);
-                goto fail_and_release;
+                goto halt_fail_and_release;
         }
 
         retval = 0;
@@ -563,6 +564,11 @@ static int rndis_bind(struct usbnet *dev, struct usb_interface *intf)
         kfree(u.buf);
         return retval;
 
+halt_fail_and_release:
+        memset(u.halt, 0, sizeof *u.halt);
+        u.halt->msg_type = RNDIS_MSG_HALT;
+        u.halt->msg_len = ccpu2(sizeof *u.halt);
+        (void) rndis_command(dev, (void *)u.halt);
 fail_and_release:
         usb_set_intfdata(info->data, NULL);
         usb_driver_release_interface(driver_of(intf), info->data);