linux-kernel - Re: [PATCH 12/12] usb: use IRQ watching

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Date:	Mon, 14 Jun 2010 23:52:10 +0200
From:	Tejun Heo <tj@...nel.org>
To:	Greg KH <gregkh@...e.de>
CC:	mingo@...e.hu, tglx@...utronix.de, bphilips@...e.de,
	yinghai@...nel.org, akpm@...ux-foundation.org,
	torvalds@...ux-foundation.org, linux-kernel@...r.kernel.org,
	jeff@...zik.org, linux-ide@...r.kernel.org,
	stern@...land.harvard.edu, khali@...ux-fr.org
Subject: Re: [PATCH 12/12] usb: use IRQ watching

Hello,

On 06/14/2010 11:41 PM, Greg KH wrote:
> So if there's a routing problem, it turns into a polled interrupt?  Do
> we really want that?

Oh yeah, I really want that for libata.  Routing is only part of the
problem and flaky IRQ is something we have to learn to cope with.

> I wonder how long people will run without realizing that there are
> problems with their system if their devices still work.

I think things would be better this way.  If the drives (both cd and
hard) / input devices are not accessible, most people would simply
give up rather than reporting, and many cases are transient problems
which happen only once in the blue moon.

It would be great if some kind of automatic reporting can be used
(similar to kerneloops?).  Hmm... maybe make the warnings scarier?

Thanks.

-- 
tejun
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