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

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Message-ID: <4F4DD398.6080006@draisberghof.de>
Date:	Wed, 29 Feb 2012 08:28:24 +0100
From:	Josua Dietze <digidietze@...isberghof.de>
To:	"Meng Zhang (张萌)" <Meng.Zhang@...iatek.com>
CC:	Matthew Dharm <mdharm-usb@...-eyed-alien.net>,
	Alan Stern <stern@...land.harvard.edu>,
	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

Am 29.02.2012 07:03, schrieb Meng Zhang:
> Thanks for your comment, I've tested some other products and found
> their entries in /lib/udev/rules.d/40-usb_modeswitch.rules. So, does
> usb_modeswitch comes with latest distributions by default?

Yes, it does. In most cases it is a prerequisite of Network Manager AFAIK.

The most-used mode switch entry in unusual_devs.h is there for 
historical reasons, from a time when usb_modeswitch was not included 
with distributions yet. I'm talking about "usb_stor_huawei_e220_init".

If people want to access the installer drive for some reason, it's not 
possible if the kernel does the mode switch without giving a choice.
With usb_modeswitch, it's a matter of a small configuration edit.

Josua Dietze
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