orinoco: abort scan on interface down

This fixes the problem causing the following trace:

------------[ cut here ]------------
WARNING: at linux-2.6.34/net/wireless/core.c:633 wdev_cleanup_work+0xb7/0xe0 [cfg80211]()
Hardware name: Latitude C840
Pid: 707, comm: cfg80211 Not tainted 2.6.34.7-0.5-desktop #1
Call Trace:
 [<c02065c3>] try_stack_unwind+0x173/0x190
 [<c02051cf>] dump_trace+0x3f/0xe0
 [<c020662b>] show_trace_log_lvl+0x4b/0x60
 [<c0206658>] show_trace+0x18/0x20
 [<c064e0b3>] dump_stack+0x6d/0x72
 [<c02443ae>] warn_slowpath_common+0x6e/0xb0
 [<c0244403>] warn_slowpath_null+0x13/0x20
 [<e2db5497>] wdev_cleanup_work+0xb7/0xe0 [cfg80211]
 [<c025cfa9>] run_workqueue+0x79/0x170
 [<c025d123>] worker_thread+0x83/0xe0
 [<c025fef4>] kthread+0x74/0x80
 [<c0203826>] kernel_thread_helper+0x6/0x10
---[ end trace 3f0348b3b0c6f4ff ]---

Reported by: Giacomo Comes <comes@naic.edu>
Signed-off-by: David Kilroy <kilroyd@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/orinoco/main.c b/drivers/net/wireless/orinoco/main.c
index e8e2d0f..fa0cf74 100644 (file)
--- a/drivers/net/wireless/orinoco/main.c
+++ b/drivers/net/wireless/orinoco/main.c
@@ -1392,10 +1392,9 @@ static void orinoco_process_scan_results(struct work_struct *work)
                                orinoco_add_hostscan_results(priv, buf, len);
 
                        kfree(buf);
-               } else if (priv->scan_request) {
+               } else {
                        /* Either abort or complete the scan */
-                       cfg80211_scan_done(priv->scan_request, (len < 0));
-                       priv->scan_request = NULL;
+                       orinoco_scan_done(priv, (len < 0));
                }
 
                spin_lock_irqsave(&priv->scan_lock, flags);
@@ -1684,6 +1683,8 @@ static int __orinoco_down(struct orinoco_private *priv)
                hermes_write_regn(hw, EVACK, 0xffff);
        }
 
+       orinoco_scan_done(priv, true);
+
        /* firmware will have to reassociate */
        netif_carrier_off(dev);
        priv->last_linkstatus = 0xffff;
@@ -1762,10 +1763,7 @@ void orinoco_reset(struct work_struct *work)
        orinoco_unlock(priv, &flags);
 
        /* Scanning support: Notify scan cancellation */
-       if (priv->scan_request) {
-               cfg80211_scan_done(priv->scan_request, 1);
-               priv->scan_request = NULL;
-       }
+       orinoco_scan_done(priv, true);
 
        if (priv->hard_reset) {
                err = (*priv->hard_reset)(priv);

diff --git a/drivers/net/wireless/orinoco/scan.c b/drivers/net/wireless/orinoco/scan.c
index 4300d9d..86cb54c 100644 (file)
--- a/drivers/net/wireless/orinoco/scan.c
+++ b/drivers/net/wireless/orinoco/scan.c
@@ -229,3 +229,11 @@ void orinoco_add_hostscan_results(struct orinoco_private *priv,
                priv->scan_request = NULL;
        }
 }
+
+void orinoco_scan_done(struct orinoco_private *priv, bool abort)
+{
+       if (priv->scan_request) {
+               cfg80211_scan_done(priv->scan_request, abort);
+               priv->scan_request = NULL;
+       }
+}

diff --git a/drivers/net/wireless/orinoco/scan.h b/drivers/net/wireless/orinoco/scan.h
index 2dc4e04..27281fb 100644 (file)
--- a/drivers/net/wireless/orinoco/scan.h
+++ b/drivers/net/wireless/orinoco/scan.h
@@ -16,5 +16,6 @@ void orinoco_add_extscan_result(struct orinoco_private *priv,
 void orinoco_add_hostscan_results(struct orinoco_private *dev,
                                  unsigned char *buf,
                                  size_t len);
+void orinoco_scan_done(struct orinoco_private *priv, bool abort);
 
 #endif /* _ORINOCO_SCAN_H_ */