Re: [PATCH] thunderbolt: Clear hops before overwriting
From: Greg KH
Date: Tue Aug 26 2014 - 11:55:08 EST
On Tue, Aug 26, 2014 at 05:42:21PM +0200, Andreas Noever wrote:
> Zero hops in tb_path_activate before writing a new path.
> This fixes the following scenario:
> - Boot with a coldplugged device
> - Unplug device
> - Plug device back in
> - PCI hotplug fails
> The hotplug operation fails because our new path matches the (now
> defunct) path which was setup by the firmware for the coldplugged
> device. By writing zeros before writing our path configuration we can
> force thunderbolt to retrain the path.
> Signed-off-by: Andreas Noever <andreas.noever@xxxxxxxxx>
> drivers/thunderbolt/path.c | 21 ++++++++++++++++++++-
> 1 file changed, 20 insertions(+), 1 deletion(-)
Should this get in for 3.17-final or can it wait for 3.18? I'm thinking
3.17, but want to make sure.
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