Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/ker…

…nel/git/dvrabel/uwb

* 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/dvrabel/uwb:
  uwb: lock rc->rsvs_lock with spin_lock_bh()
  wusb: timeout when waiting for ASL/PZL updates in whci-hcd
  uwb: remove unused #include <version.h>'s
  wusb: return -ENOTCONN when resetting a port with no connected device
  uwb: safely remove all reservations

drivers/usb/host/whci/asl.c

@@ -170,12 +170,17 @@ void asl_stop(struct whc *whc)
 void asl_update(struct whc *whc, uint32_t wusbcmd)
 {
 	struct wusbhc *wusbhc = &whc->wusbhc;
+	long t;
 
 	mutex_lock(&wusbhc->mutex);
 	if (wusbhc->active) {
 		whc_write_wusbcmd(whc, wusbcmd, wusbcmd);
-		wait_event(whc->async_list_wq,
-			   (le_readl(whc->base + WUSBCMD) & WUSBCMD_ASYNC_UPDATED) == 0);
+		t = wait_event_timeout(
+			whc->async_list_wq,
+			(le_readl(whc->base + WUSBCMD) & WUSBCMD_ASYNC_UPDATED) == 0,
+			msecs_to_jiffies(1000));
+		if (t == 0)
+			whc_hw_error(whc, "ASL update timeout");
 	}
 	mutex_unlock(&wusbhc->mutex);
 }

drivers/usb/host/whci/hw.c

@@ -87,3 +87,18 @@ int whc_do_gencmd(struct whc *whc, u32 cmd, u32 params, void *addr, size_t len)
 
 	return ret;
 }
+
+/**
+ * whc_hw_error - recover from a hardware error
+ * @whc:    the WHCI HC that broke.
+ * @reason: a description of the failure.
+ *
+ * Recover from broken hardware with a full reset.
+ */
+void whc_hw_error(struct whc *whc, const char *reason)
+{
+	struct wusbhc *wusbhc = &whc->wusbhc;
+
+	dev_err(&whc->umc->dev, "hardware error: %s\n", reason);
+	wusbhc_reset_all(wusbhc);
+}

drivers/usb/host/whci/pzl.c

@@ -183,12 +183,17 @@ void pzl_stop(struct whc *whc)
 void pzl_update(struct whc *whc, uint32_t wusbcmd)
 {
 	struct wusbhc *wusbhc = &whc->wusbhc;
+	long t;
 
 	mutex_lock(&wusbhc->mutex);
 	if (wusbhc->active) {
 		whc_write_wusbcmd(whc, wusbcmd, wusbcmd);
-		wait_event(whc->periodic_list_wq,
-			   (le_readl(whc->base + WUSBCMD) & WUSBCMD_PERIODIC_UPDATED) == 0);
+		t = wait_event_timeout(
+			whc->periodic_list_wq,
+			(le_readl(whc->base + WUSBCMD) & WUSBCMD_PERIODIC_UPDATED) == 0,
+			msecs_to_jiffies(1000));
+		if (t == 0)
+			whc_hw_error(whc, "PZL update timeout");
 	}
 	mutex_unlock(&wusbhc->mutex);
 }

drivers/usb/host/whci/whcd.h

@@ -137,6 +137,7 @@ void whc_clean_up(struct whc *whc);
 /* hw.c */
 void whc_write_wusbcmd(struct whc *whc, u32 mask, u32 val);
 int whc_do_gencmd(struct whc *whc, u32 cmd, u32 params, void *addr, size_t len);
+void whc_hw_error(struct whc *whc, const char *reason);
 
 /* wusb.c */
 int whc_wusbhc_start(struct wusbhc *wusbhc);

drivers/usb/wusbcore/devconnect.c

@@ -386,6 +386,7 @@ static void __wusbhc_dev_disconnect(struct wusbhc *wusbhc,
 			  | USB_PORT_STAT_LOW_SPEED | USB_PORT_STAT_HIGH_SPEED);
 	port->change |= USB_PORT_STAT_C_CONNECTION | USB_PORT_STAT_C_ENABLE;
 	if (wusb_dev) {
+		dev_dbg(wusbhc->dev, "disconnecting device from port %d\n", wusb_dev->port_idx);
 		if (!list_empty(&wusb_dev->cack_node))
 			list_del_init(&wusb_dev->cack_node);
 		/* For the one in cack_add() */

drivers/usb/wusbcore/rh.c

@@ -100,6 +100,9 @@ static int wusbhc_rh_port_reset(struct wusbhc *wusbhc, u8 port_idx)
 	struct wusb_port *port = wusb_port_by_idx(wusbhc, port_idx);
 	struct wusb_dev *wusb_dev = port->wusb_dev;
 
+	if (wusb_dev == NULL)
+		return -ENOTCONN;
+
 	port->status |= USB_PORT_STAT_RESET;
 	port->change |= USB_PORT_STAT_C_RESET;
 

drivers/uwb/allocator.c

@@ -15,7 +15,6 @@
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
-#include <linux/version.h>
 #include <linux/kernel.h>
 #include <linux/uwb.h>
 

drivers/uwb/drp.c

@@ -66,14 +66,14 @@ static void uwb_rc_set_drp_cmd_done(struct uwb_rc *rc, void *arg,
 	} else
 		dev_err(&rc->uwb_dev.dev, "SET-DRP-IE: timeout\n");
 
-	spin_lock(&rc->rsvs_lock);
+	spin_lock_bh(&rc->rsvs_lock);
 	if (rc->set_drp_ie_pending > 1) {
 		rc->set_drp_ie_pending = 0;
 		uwb_rsv_queue_update(rc);	
 	} else {
 		rc->set_drp_ie_pending = 0;	
 	}
-	spin_unlock(&rc->rsvs_lock);
+	spin_unlock_bh(&rc->rsvs_lock);
 }
 
 /**

drivers/uwb/rsv.c

@@ -114,7 +114,8 @@ void uwb_rsv_dump(char *text, struct uwb_rsv *rsv)
 		devaddr = rsv->target.devaddr;
 	uwb_dev_addr_print(target, sizeof(target), &devaddr);
 
-	dev_dbg(dev, "rsv %s -> %s: %s\n", owner, target, uwb_rsv_state_str(rsv->state));
+	dev_dbg(dev, "rsv %s %s -> %s: %s\n",
+		text, owner, target, uwb_rsv_state_str(rsv->state));
 }
 
 static void uwb_rsv_release(struct kref *kref)
@@ -511,8 +512,7 @@ void uwb_rsv_remove(struct uwb_rsv *rsv)
 
 	if (uwb_rsv_is_owner(rsv))
 		uwb_rsv_put_stream(rsv);
-
-	del_timer_sync(&rsv->timer);
+
 	uwb_dev_put(rsv->owner);
 	if (rsv->target.type == UWB_RSV_TARGET_DEV)
 		uwb_dev_put(rsv->target.dev);
@@ -870,7 +870,7 @@ void uwb_rsv_queue_update(struct uwb_rc *rc)
  */
 void uwb_rsv_sched_update(struct uwb_rc *rc)
 {
-	spin_lock(&rc->rsvs_lock);
+	spin_lock_bh(&rc->rsvs_lock);
 	if (!delayed_work_pending(&rc->rsv_update_work)) {
 		if (rc->set_drp_ie_pending > 0) {
 			rc->set_drp_ie_pending++;
@@ -879,7 +879,7 @@ void uwb_rsv_sched_update(struct uwb_rc *rc)
 		uwb_rsv_queue_update(rc);
 	}
 unlock:
-	spin_unlock(&rc->rsvs_lock);
+	spin_unlock_bh(&rc->rsvs_lock);
 }
 
 /*
@@ -943,13 +943,22 @@ void uwb_rsv_remove_all(struct uwb_rc *rc)
 
 	mutex_lock(&rc->rsvs_mutex);
 	list_for_each_entry_safe(rsv, t, &rc->reservations, rc_node) {
-		uwb_rsv_remove(rsv);
+		if (rsv->state != UWB_RSV_STATE_NONE)
+			uwb_rsv_set_state(rsv, UWB_RSV_STATE_NONE);
+		del_timer_sync(&rsv->timer);
 	}
 	/* Cancel any postponed update. */
 	rc->set_drp_ie_pending = 0;
 	mutex_unlock(&rc->rsvs_mutex);
 
 	cancel_delayed_work_sync(&rc->rsv_update_work);
+	flush_workqueue(rc->rsv_workq);
+
+	mutex_lock(&rc->rsvs_mutex);
+	list_for_each_entry_safe(rsv, t, &rc->reservations, rc_node) {
+		uwb_rsv_remove(rsv);
+	}
+	mutex_unlock(&rc->rsvs_mutex);
 }
 
 void uwb_rsv_init(struct uwb_rc *rc)