linux-kernel - RE: [PATCH] USB: Mass Storage: Add MediaTek MT6276M device entry

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Message-ID: <0D3EFCAF29FAA54FB91286E54DF1085C23048506EF@MTKMBS30.mediatek.inc>
Date:	Wed, 29 Feb 2012 08:25:43 +0800
From:	Meng Zhang (张萌) <Meng.Zhang@...iatek.com>
To:	Alan Stern <stern@...land.harvard.edu>
CC:	Josua Dietze <digidietze@...isberghof.de>,
	Matthew Dharm <mdharm-usb@...-eyed-alien.net>,
	Phil Dibowitz <phil@...m.com>,
	USB list <linux-usb@...r.kernel.org>,
	USB Storage list <usb-storage@...ts.one-eyed-alien.net>,
	Kernel development list <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] USB: Mass Storage: Add MediaTek MT6276M device entry

Hi Alan,

As far as I know, many other devices used this init function in unusual_devs.h for their "ZeroCD" feature, and I think this is more convenient than let device user install utilities like usb_modeswitch and input command manually. 

Thanks.

BR.
Meng Zhang

-----Original Message-----
From: linux-usb-owner@...r.kernel.org [mailto:linux-usb-owner@...r.kernel.org] On Behalf Of Alan Stern
Sent: Tuesday, February 28, 2012 11:31 PM
To: Meng Zhang (张萌)
Cc: Josua Dietze; Matthew Dharm; Phil Dibowitz; USB list; USB Storage list; Kernel development list
Subject: Re: [PATCH] USB: Mass Storage: Add MediaTek MT6276M device entry

On Tue, 28 Feb 2012, Meng Zhang wrote:

> from: Meng Zhang <meng.zhang@...iatek.com>
> 
> 1. Add entrys for mediatek MT6276M in unusual_devs.h
> 
> 2. Add init function for mediatek MT6276M to switch to COM port mode
> 
> 3. usb-devices outputs after running with this patch:
> T:  Bus=02 Lev=01 Prnt=01 Port=05 Cnt=01 Dev#= 48 Spd=480 MxCh= 0
> D:  Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1
> P:  Vendor=0e8d ProdID=00a1 Rev=02.00
> S:  Manufacturer=MediaTek Inc
> S:  Product=Product
> C:  #Ifs= 3 Cfg#= 1 Atr=80 MxPwr=500mA
> I:  If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=02 Prot=01 Driver=option
> I:  If#= 1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
> I:  If#= 2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
> 
> 4. patch based on branch:
> 	git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
> 
> 
> Signed-off-by: Meng Zhang <meng.zhang@...iatek.com>

Nowadays, aren't such things handled in userspace by the usb_modeswitch program rather than in the kernel driver?

Alan Stern

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