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From: Johannes Berg <johannes@sipsolutions.net>
To: Stanislaw Gruszka <sgruszka@redhat.com>
Cc: Wey-Yi Guy <wey-yi.w.guy@intel.com>,
	linville@tuxdriver.com, linux-wireless@vger.kernel.org,
	ipw3945-devel@lists.sourceforge.net
Subject: Re: [PATCH wireless-2.6] iwlwifi: do not perferm force reset while doing scan
Date: Wed, 22 Sep 2010 17:10:57 +0200	[thread overview]
Message-ID: <1285168257.3684.65.camel@jlt3.sipsolutions.net> (raw)
In-Reply-To: <20100922165155.21cb6321@dhcp-lab-109.englab.brq.redhat.com>

On Wed, 2010-09-22 at 16:51 +0200, Stanislaw Gruszka wrote:

> Yes, bg_restart() force scan abort, but not if no scan is pending. It looks
> like that:
> 
> cpu0						cpu1
> 
> 						iwl_bg_restart()
> 						  __iwl_down()
> 						     iwl_scan_cancel_timeout
> 						     (do nothing since no pending scan)
> 			  
> __ieee80211_start_scan
>   __set_bit(SCAN_HW_SCANNING, &local->scanning);

Ah, ok, makes sense. I think some mutex trickery could possibly help
here though? But I'm not sure it's worth it...

johannes


  reply	other threads:[~2010-09-22 15:11 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-09-17 21:24 [PATCH wireless-2.6] iwlwifi: do not perferm force reset while doing scan Wey-Yi Guy
2010-09-22  8:57 ` Stanislaw Gruszka
2010-09-22 14:33   ` Guy, Wey-Yi
2010-09-22 14:39   ` Johannes Berg
2010-09-22 14:51     ` Stanislaw Gruszka
2010-09-22 15:10       ` Johannes Berg [this message]
2010-09-22 15:23         ` Stanislaw Gruszka
2010-09-22 15:27           ` Johannes Berg
2010-09-22 15:29           ` Guy, Wey-Yi

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