diff options
| author | Pekka Enberg <penberg@cs.helsinki.fi> | 2005-11-16 21:55:05 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-11-17 08:32:58 -0800 |
| commit | efb3442cf1c65747a858476e10f705612383eed1 (patch) | |
| tree | a093915da40a7887a8c8a3f927177764a55d33d2 /drivers/net | |
| parent | 0db169f9703115bab09eda5d89a8f6937a7bf98e (diff) | |
[PATCH] ipw2200: disallow direct scanning when device is down
The function ipw_request_direct_scan() should bail out when the device
is down. This fixes a lockup caused by wpa_supplicant triggering
ipw_request_direct_scan() while the driver was in a middle of a reset
due to firmware errors.
Thanks to Zilvinas Valinskas for reporting the bug and helping me
debug it.
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Acked-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/wireless/ipw2200.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/net/wireless/ipw2200.c b/drivers/net/wireless/ipw2200.c index b0d195d1721a..374b682e4d6a 100644 --- a/drivers/net/wireless/ipw2200.c +++ b/drivers/net/wireless/ipw2200.c @@ -8926,6 +8926,10 @@ static int ipw_request_direct_scan(struct ipw_priv *priv, char *essid, struct ipw_scan_request_ext scan; int err = 0, scan_type; + if (!(priv->status & STATUS_INIT) || + (priv->status & STATUS_EXIT_PENDING)) + return 0; + down(&priv->sem); if (priv->status & STATUS_RF_KILL_MASK) { |