linux-kernel - Re: [PATCH] thunderbolt: Initialize Thunderbolt bus earlier

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Date:   Mon, 09 Oct 2017 10:30:57 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     mika.westerberg@...ux.intel.com
Cc:     andreas.noever@...il.com, michael.jamet@...el.com,
        yehezkel.bernat@...el.com, fengguang.wu@...el.com,
        gregkh@...uxfoundation.org, andriy.shevchenko@...ux.intel.com,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] thunderbolt: Initialize Thunderbolt bus earlier

From: Mika Westerberg <mika.westerberg@...ux.intel.com>
Date: Mon,  9 Oct 2017 16:22:34 +0300

> The 0day kbuild robot reports following crash:
 ...
> The reason is that both Thunderbolt bus and thunderbolt-net are build
> into the kernel image, and the latter is linked first because
> drivers/net comes before drivers/thunderbolt. Since both use
> module_init() thunderbolt-net ends up calling Thunderbolt bus functions
> too early triggering the above crash.
> 
> Fix this by moving Thunderbolt bus initialization to happen earlier to
> make sure all the data structures are ready when Thunderbolt service
> drivers are initialized. To be on the safe side also add a check for
> properly initialized xdomain_property_dir to tb_register_property_dir().
> 
> Reported-by: kernel test robot <fengguang.wu@...el.com>
> Signed-off-by: Mika Westerberg <mika.westerberg@...ux.intel.com>

Applied to net-next, thanks.