Re: [RFC PATCH] unlock rtnl mutex in ic_open_devs while waiting

[David Miller]

From: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxx>
Date: Mon, 05 Jan 2015 14:52:06 +0100

> This fixes a deadlock with alx_link_check, which takes the rtnl_mutex in
> a work item to check the link.
> 
> I have no idea whether alx should be fixed or ipconfig.c,
> but this saves 120 seconds off my boot time. ;-)
> 
> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxx>

I genuinely think that alx_link_check() needs to use a smaller hammer
to do it's locking, there is no reason to use the RTNL mutex.

A driver private mutex will probably work just as well and not have
this problem.
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