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Message-ID: <CAMxnaaX5e_NwT9S45WyzKLnbwtkcZk1fU4bb5P2FkggqVRvhRg@mail.gmail.com> Date: Tue, 26 Aug 2014 18:02:19 +0200 From: Andreas Noever <andreas.noever@...il.com> To: Greg KH <greg@...ah.com> Cc: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> Subject: Re: [PATCH] thunderbolt: Clear hops before overwriting On Tue, Aug 26, 2014 at 5:54 PM, Greg KH <greg@...ah.com> wrote: > 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@...il.com> >> --- >> 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. I would prefer 3.17. > thanks, > > greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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