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orinoco: abort scan on interface down

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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>
This commit is contained in:
David Kilroy 2010-11-24 20:33:02 +00:00 committed by John W. Linville
parent 5c5e138b59
commit cf63495d0d
3 changed files with 14 additions and 7 deletions
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12
drivers/net/wireless/orinoco/main.c
View file

@ -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);

8
drivers/net/wireless/orinoco/scan.c
View file

@ -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;
}
}

1
drivers/net/wireless/orinoco/scan.h
View file

@ -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_ */