linux-kernel - Re: [PATCH] usb: gadget/composite : Avoid crash with bad gadget drivers

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Date:	Tue, 27 Aug 2013 13:55:06 -0500
From:	Felipe Balbi <balbi@...com>
To:	Philippe De Swert <philippe.deswert@...lamobile.com>
CC:	<balbi@...com>, <linux-usb@...r.kernel.org>,
	<gregkh@...uxfoundation.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] usb: gadget/composite : Avoid crash with bad gadget
 drivers

On Thu, Aug 15, 2013 at 01:40:01AM +0300, Philippe De Swert wrote:
> Hi,
> 
> On 12/08/13 21:08, Felipe Balbi wrote:
> >On Fri, Aug 09, 2013 at 09:23:08PM +0300, Philippe De Swert wrote:
> >>Some bad gadget drivers do not check the return status of usb_add_config.
> >
> >fix the gadget driver
> 
> As stated in my comment (see below) that is indeed what should
> happen. But we cannot fix it in future new gadget drivers, is it thus
> not better
> to avoid a crash? The gadget driver will not work as expected anyway
> when this occurs and the print will at least give an indication why.

if we avoid a crash, we will be decreasing the urgency of fixing the
gadget driver bug.

Let's leave it as is. I can't live thinking that maybe in the future
there will be gadget drivers doing different things...

-- 
balbi

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