Re: iwl: potential deadlock?
From: reinette chatre
Date: Mon Jul 13 2009 - 16:18:48 EST
Hi Jiri,
On Mon, 2009-07-13 at 12:34 -0700, Jiri Slaby wrote:
> Hi,
>
> we found a potential deadlock in iwl code by our tool.
What tool is this?
>
> Can this happen:
I don't think so ...
> iwl_update_tkip_key()
> -> spin_lock_irqsave(&priv->sta_lock)
> -> iwl_send_add_sta()
iwl_send_add_sta() is called here with flags = CMD_ASYNC
In iwl_send_add_sta() we have:
if (ret || (flags & CMD_ASYNC))
return ret;
> -> iwl_sta_ucode_activate()
... so this is not run in this case.
> -> spin_lock_irqsave(&priv->sta_lock)
Reinette
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