linux-kernel - RE: [PATCH] usb: xhci: Fix incomplete PM resume operation due to XHCI commmand timeout

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Message-ID: <Pine.LNX.4.44L0.1603211102080.1708-100000@iolanthe.rowland.org>
Date:	Mon, 21 Mar 2016 11:02:58 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Rajesh Bhagat <rajesh.bhagat@....com>
cc:	"linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
	"mathias.nyman@...el.com" <mathias.nyman@...el.com>,
	Sriram Dash <sriram.dash@....com>
Subject: RE: [PATCH] usb: xhci: Fix incomplete PM resume operation due to
 XHCI commmand timeout

On Mon, 21 Mar 2016, Rajesh Bhagat wrote:

> I agree to your point. Actually the intent was to check the return status of reset_device which 
> is currently being ignored. I encountered the reset_device failure case in resume operation (STR) 
> which is increasing the time of resume and causing unexpected crashes if return value is not checked. 
> 
> Do you agree it should be checked here? If yes, I can rework this patch. 

I don't know.  You should ask the xHCI maintainter, Mathias.

Alan Stern