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From: Mathias Nyman <mathias.nyman@linux.intel.com>
To: Rajesh Bhagat <rajesh.bhagat@nxp.com>
Cc: "gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>,
	"linux-usb@vger.kernel.org" <linux-usb@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Sriram Dash <sriram.dash@nxp.com>
Subject: Re: [PATCH] usb: xhci: Fix incomplete PM resume operation due to XHCI commmand timeout
Date: Fri, 01 Apr 2016 13:49:53 +0300	[thread overview]
Message-ID: <56FE5251.5020806@linux.intel.com> (raw)
In-Reply-To: <HE1PR0401MB2028787DE01C0C8E79520414E39A0@HE1PR0401MB2028.eurprd04.prod.outlook.com>

On 01.04.2016 06:55, Rajesh Bhagat wrote:

>>>
>>> Please share your opinion on other changes for patch submission as well as resume
>> time.
>>>
>
>>
>> I think more effort should be put into investigating why this happens in the first place.
>> What is the root cause? why doesn't xhci start properly after resume in this case.
>>
> Hello Mathias,
>
> I understand your point and would surely debug the root cause of the issue. But implementing the
> fallback mechanism in SW, if HW does not respond well seems to a better solution to me.
>

Yes, I'll add something like this, at least the xhci parts to make sure the completions are called.

This is not really a fallback, it's just a better burial for xhci. It will be unusable after this.

-Mathias

  reply	other threads:[~2016-04-01 10:43 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-03-18  7:01 [PATCH] usb: xhci: Fix incomplete PM resume operation due to XHCI commmand timeout Rajesh Bhagat
2016-03-18 11:20 ` Mathias Nyman
2016-03-21  4:18   ` Rajesh Bhagat
2016-03-21  9:16     ` Mathias Nyman
2016-03-22  5:19       ` Rajesh Bhagat
2016-03-22 12:05         ` Mathias Nyman
2016-03-23  3:53           ` Rajesh Bhagat
2016-03-23 14:22             ` Mathias Nyman
2016-03-28  6:13               ` Rajesh Bhagat
2016-03-29 17:21                 ` Mathias Nyman
2016-03-31  3:51                   ` Rajesh Bhagat
2016-03-31 14:36                     ` Mathias Nyman
2016-04-01  3:55                       ` Rajesh Bhagat
2016-04-01 10:49                         ` Mathias Nyman [this message]
2016-04-11  3:46                           ` Rajesh Bhagat
2016-03-18 14:21 ` Alan Stern
2016-03-21  4:22   ` Rajesh Bhagat
2016-03-21 15:02     ` Alan Stern

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