linux-kernel - Re: [PATCH 1/1]linux-usb: optimize to match the Huawei USB storage devices and support new switch command

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Message-ID: <1758237.OLMhWhauCd@linux-lqwf.site>
Date:	Fri, 14 Dec 2012 10:33:39 +0100
From:	Oliver Neukum <oneukum@...e.de>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
Cc:	"Fangxiaozhi (Franko)" <fangxiaozhi@...wei.com>,
	"linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Xueguiying (Zihan)" <zihan.xue@...wei.com>,
	"Linlei (Lei Lin)" <lei.lin@...wei.com>,
	"greg@...ah.com" <greg@...ah.com>,
	"Yili (Neil)" <neil.yi@...wei.com>,
	"Wangyuhua (Roger, Credit)" <wangyuhua@...wei.com>,
	Huqiao <huqiao36@...wei.com>
Subject: Re: [PATCH 1/1]linux-usb: optimize to match the Huawei USB storage devices and support new switch command

On Friday 14 December 2012 09:31:41 Alan Cox wrote:
> On Fri, 14 Dec 2012 03:01:24 +0000
> "Fangxiaozhi (Franko)" <fangxiaozhi@...wei.com> wrote:
> 
> > Dear Alan:
> > 
> > 	This prevents people getting access to the storage device if they want.
> > 	----In our device, after its switching, it will keep the cdrom port together with other ports (such as modem port). So you can access the storage device too, after our switch.
> 
> Ok so the behaviour is
> 
> 	plug in device
> 	"I am a CD-ROM"
> 	command sent
> 	"I am a CD-ROM, I am a modem, I am other things"
> 
> with the newer devices ?

For such devices we should put the switching code into generic code,
not a device driver so that we have a chance to do reset_resume()
on those devices.

	Regards
		Oliver

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