On Fri, Mar 02, 2007 at 01:26:59AM -0500, Pavel Roskin wrote:
> Hello!
>
> If I load bcm43xx and run iwconfig without bringing the interface up,
> I'm getting this in the kernel log:
>
> SoftMAC: ASSERTION FAILED (0)
> at: /home/proski/src/linux-2.6/net/ieee80211/softmac/ieee80211softmac_wx.c:306:ieee80211softmac_wx_get_rate()
>
> It's an x86 system with the 2.6.20 kernel (actually, it's the master
> branch from the mb repository, which is wireless-dev before the 2.6.21
> switchover plus broadcom fixes).
>
> The assert assures that the interface has a valid tx rate. But since
> the interface has never been up, the rate has not been assigned.
>
> Either softmac should tolerate rate 0, at least when the interface is
> down, or it should initialize the rate much earlier, perhaps in
> alloc_ieee80211softmac().
>
> I can test another tree, e.g. wireless-2.6, if there are chances that
> the problem has been fixed.
Does the tree you are using have this commit?
commit 6bbdce5ac755e3b3cdcf9bb9fdbcc2af78ad34d0
Author: John W. Linville <linville@xxxxxxxxxxxxx>
Date: Tue Jan 2 21:22:05 2007 -0500
[PATCH] softmac: avoid assert in ieee80211softmac_wx_get_rate
Unconfigured bcm43xx device can hit an assert() during wx_get_rate
queries. This is because bcm43xx calls ieee80211softmac_start late
(i.e. during open instead of probe).
bcm43xx_net_open ->
bcm43xx_init_board ->
bcm43xx_select_wireless_core ->
ieee80211softmac_start
Fix is to check that device is running before completing
ieee80211softmac_wx_get_rate.
Signed-off-by: John W. Linville <linville@xxxxxxxxxxxxx>
It is in linux-2.6, wireless-2.6, and wireless-dev. If you don't
want to use those trees, you should be able to apply the patch to
the tree you are using.
Hth!
John
--
John W. Linville
linville@xxxxxxxxxxxxx
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