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Date: Tue, 07 Apr 2009 03:00:01 +0300 From: Maxim Levitsky <maximlevitsky@...il.com> To: linux-wireless <linux-wireless@...r.kernel.org>, linux-kernel <linux-kernel@...r.kernel.org> Subject: attempt to scan fails (device busy) if essid/ssid was changed recently Recently I was trying to reduce time it takes for wireless card to connect. I noticed that always first attempt at scan fails when NM asks for scan. I also noticed that this happens with quite recent kernels (I think 2,6.28) didn't have this behavior. Looking a bit deeper I discovered that each time NM disconnects from a networks it sets random ssid/essid to the card (using wireless extensions) After that scan fails for some time. as a NM free example you can run iwconfig wlan0 essid dummy iwlist scan and this will fail NM in this case waits for whole 10 seconds. What do you think about this? I confirm that on iwl3945 and ath5k, so this isn't driver specific. Best regards, Maxim Levitsky -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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