Re: [PATCH wireless-2.6 or stable] iwlwifi: return error when failto start scanning

[Guy, Wey-Yi]

Hi Gruszka,

On Wed, 2010-10-06 at 09:04 -0700, Stanislaw Gruszka wrote:
> This is stable friendly backport of wireless-testing commit
> 3eecce527c7434dfd16517ce08b49632c8a26717 "iwlwifi: unify scan start
> checks". Wireless-testing version include also a lot of cleanups.
> 
> On error case in {iwl3945,iwlagn}_request_scan we queue abort_scan work,
> which in a fact do nothing, so we never complete the scan. Thats gives
> "WARNING: at net/wireless/core.c:614 wdev_cleanup_work" and stopped
> network connection until reload iwlwifi modules. Return of -EIO, and
> stopping queuing any work is a fix.
> 
> Note there are still many cases when we can get: 
> 
> WARNING: at net/wireless/core.c:614 wdev_cleanup_work  
> WARNING: at net/mac80211/scan.c:266 ieee80211_scan_completed
> WARNING: at net/mac80211/scan.c:269 ieee80211_scan_complete
> 
> which are not fixed. Unfortunately does not exist single, small fix
> for that problems, and we probably will see some more bug reports
> with scan warnings. As solution we rewrite iwl-scan.c code to avoid
> all possible race conditions. That quite big patch set is queued
> for 2.6.37 .
> 
> Signed-off-by: Stanislaw Gruszka <sgruszka@xxxxxxxxxx>
> ---
> Patch is intended for wireless-2.6, or in case when it does not
> make 2.6.36 release, for -stable 2.6.36.y 
> 

Is this the replacement for Mickler's patch?

Thanks
Wey



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