uwb: don't unbind the radio controller driver when resetting

Use pre_reset and post_reset methods to avoid unbinding the radio
controller driver after a uwb_rc_reset_all() call.  This avoids a
deadlock in uwb_rc_rm() when waiting for the uwb event thread to stop.

Signed-off-by: David Vrabel <david.vrabel@csr.com>

1 files changed, 21 insertions, 1 deletions

diff --git a/drivers/uwb/hwa-rc.c b/drivers/uwb/hwa-rc.c
index 18009c99577d..158e98d08af9 100644
--- a/drivers/uwb/hwa-rc.c
+++ b/drivers/uwb/hwa-rc.c
@@ -881,6 +881,24 @@ static void hwarc_disconnect(struct usb_interface *iface)
         uwb_rc_put(uwb_rc);     /* when creating the device, refcount = 1 */
 }
 
+static int hwarc_pre_reset(struct usb_interface *iface)
+{
+        struct hwarc *hwarc = usb_get_intfdata(iface);
+        struct uwb_rc *uwb_rc = hwarc->uwb_rc;
+
+        uwb_rc_pre_reset(uwb_rc);
+        return 0;
+}
+
+static int hwarc_post_reset(struct usb_interface *iface)
+{
+        struct hwarc *hwarc = usb_get_intfdata(iface);
+        struct uwb_rc *uwb_rc = hwarc->uwb_rc;
+
+        uwb_rc_post_reset(uwb_rc);
+        return 0;
+}
+
 /** USB device ID's that we handle */
 static struct usb_device_id hwarc_id_table[] = {
         /* D-Link DUB-1210 */
@@ -897,9 +915,11 @@ MODULE_DEVICE_TABLE(usb, hwarc_id_table);
 
 static struct usb_driver hwarc_driver = {
         .name =         "hwa-rc",
+        .id_table =     hwarc_id_table,
         .probe =        hwarc_probe,
         .disconnect =   hwarc_disconnect,
-        .id_table =     hwarc_id_table,
+        .pre_reset =    hwarc_pre_reset,
+        .post_reset =   hwarc_post_reset,
 };
 
 static int __init hwarc_driver_init(void)