linux-kernel - Re: [PATCH] USB: expose Huawei E1550 3G modem

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Message-ID: <20100419161406.GO26130@one-eyed-alien.net>
Date:	Mon, 19 Apr 2010 09:14:06 -0700
From:	Matthew Dharm <mdharm-kernel@...-eyed-alien.net>
To:	Stefan Assmann <sassmann@...hat.com>
Cc:	digidietze@...isberghof.de,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-usb@...r.kernel.org
Subject: Re: [PATCH] USB: expose Huawei E1550 3G modem

On Mon, Apr 19, 2010 at 04:58:55PM +0200, Stefan Assmann wrote:
> On 19.04.2010 16:19, Matthew Dharm wrote:
> > 
> > 2) It is much much easier to update a userspace tool than the kernel.
> > Thus, new devices can be supported without a kernel update by end-users.
> 
> Of course. Nobody is talking about removing existing code from any
> user-space application. Under the condition that no functionality gets
> lost, wouldn't it be convenient to have the modem exposed by the kernel?
> If the kernel support doesn't suffice you can still run an updated
> usb_modeswitch until kernel support is there.
> 
> This also has the benefit that it would work for people that don't
> have usb_modeswitch installed. Matt, are you still thinking that is the
> wrong way of doing it?

I still believe that, for an end-user, upgrading a userspace tool is much
much easier than upgrading a kernel.

Also, the actual "driver" for the device (i.e. the modem part) doesn't need
an upgrade to the kernel component for these types of devices.

Finally, these sorts of databases don't belong in the kernel as much as
possible.

The usb-storage driver will not accept patches for device which can be
supported via userspace-only tools.

Matt

-- 
Matthew Dharm                              Home: mdharm-usb@...-eyed-alien.net 
Maintainer, Linux USB Mass Storage Driver

NYET! The evil stops here!
					-- Pitr
User Friendly, 6/22/1998

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