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Re: bug in compat-wireless 3.6, rt2x00 iftype is wrong

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The issue seems to be that in all of these drivers, wdev is NULL when
you hit set_channel()  in the older and newer driver.  In the old
driver, cfg8011_set_freq() is called with wdev has NULL and it still
calls rdev->ops->set_channel(....) which succeeds.

However, in the new driver cfg80211_set_monitor_channel() is called
since wdev was NULL, but now instead of still calling
rdev->ops->set_channel() or rdev->ops->set_monitor_channel() it
returns -EBUSY because if(!cfg80211_has_monitors_only(rdev)) returns
true.  Is this really the expected behavior, or is meant to only
return -EBUSY if there are only monitors, rather? (i.e.,
if(cfg80211_has_monitors_only(rdev)) )


On Fri, Nov 2, 2012 at 2:46 PM, George Nychis <gnychis@xxxxxxxxx> wrote:
> I'm still trying to track down the cause for this, but starting in
> compat-wireless-3.6 (including early RCs and the most recent 3.6.2),
> rt2x00 devices register with the wrong iftype.  They register as
> NL80211_IFTYPE_MONITOR instead of NL80211_IFTYPE_STATION, for example.
>  I checked cw-3.5, 3.4, 3.2, and 3.1 and none of these versions have
> this bug.
>
> This breaks the ability to set channels, etc.  Hoping to track down
> the bug, but wanted to report it in the meantime and see if anyone
> else has run in to it.
>
> - George
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