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From: Greg KH <gregkh@linuxfoundation.org>
To: Joel Stanley <joel@jms.id.au>, Mathias Nyman <mathias.nyman@intel.com>
Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH] xhci: do not halt the secondary HCD
Date: Mon, 19 Sep 2016 09:03:46 +0200	[thread overview]
Message-ID: <20160919070346.GA29827@kroah.com> (raw)
In-Reply-To: <20160919063545.2055-1-joel@jms.id.au>

On Mon, Sep 19, 2016 at 04:05:45PM +0930, Joel Stanley wrote:
> We can't halt the secondary HCD, because it's also the primary HCD,
> which will cause problems if we have devices attached to the primary
> HCD, like a keyboard.
> 
> We've been carrying this in our Linux-as-a-bootloader environment for a little
> while now. The machines all have the same TI TUSB73x0 part, and when we kexec
> the devices don't come back until a system power cycle.
> 
> I'd like some advice on an acceptable way to upstream the fix, so that the xhci
> device survives kexec.

Any reason you didn't cc: Mathias?

And have you tried 4.8-rc kernels?  I thought we just fixed an issue
around secondary HCDs...

thanks,

greg k-h

  reply	other threads:[~2016-09-19  7:03 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-09-19  6:35 [RFC PATCH] xhci: do not halt the secondary HCD Joel Stanley
2016-09-19  7:03 ` Greg KH [this message]
2016-09-19  7:41 ` Mathias Nyman
2016-09-19  8:23   ` Joel Stanley
2016-09-20  8:26     ` Mathias Nyman
2016-10-26  4:27       ` Joel Stanley
2016-09-19 10:22 ` Sergei Shtylyov

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