From: Anton Vorontsov <avorontsov@ru.mvista.com>
To: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
dbrownell@users.sourceforge.net, greg@kroah.com,
linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
linuxppc-dev@ozlabs.org, leoli@freescale.com,
timur@freescale.com
Subject: Re: [PATCH 3/3] USB: driver for Freescale QUICC Engine USB Host Controller
Date: Wed, 24 Sep 2008 02:57:30 +0400 [thread overview]
Message-ID: <20080923225730.GB13617@oksana.dev.rtsoft.ru> (raw)
In-Reply-To: <48D9612D.7060601@ru.mvista.com>
On Wed, Sep 24, 2008 at 01:35:41AM +0400, Sergei Shtylyov wrote:
[...]
>>>>> This controller does not integrate the root hub, so this driver also
>>>>> fakes one-port hub. External hub is required to support more than
>>>>> one device.
>>>>>
>>>>> ...
>>>>>
>>>>>
>>>> Please, no.
>>>>
>>>
>>> What exactly 'no'? ;-)
>>>
>>
>> No one-port hubs I guess -- they are pointless. Though e.g. MUSB
>> driver creates one -- I guess to impersonate a transaction translating
>> high-speed hub...
>>
>
> ... then the root hub emulation is completely pointless.
It isn't. We always should emulate the root hub. The root hub
is part and parcel of any USB Host. Even the one-port one.
--
Anton Vorontsov
email: cbouatmailru@gmail.com
irc://irc.freenode.net/bd2
next prev parent reply other threads:[~2008-09-23 22:57 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-18 15:16 [PATCH 0/3] Patches to support QE USB Host Controller Anton Vorontsov
2008-09-18 15:17 ` [PATCH 1/3] gpiolib: make gpio_to_chip() public Anton Vorontsov
2008-09-18 15:17 ` [PATCH 2/3] powerpc/qe: new call to revert a gpio to a dedicated function Anton Vorontsov
2008-09-18 15:17 ` [PATCH 3/3] USB: driver for Freescale QUICC Engine USB Host Controller Anton Vorontsov
2008-09-19 23:23 ` Andrew Morton
2008-09-23 18:31 ` Anton Vorontsov
2008-09-23 18:32 ` [PATCH 1/2] USB: Protect hcd.h from multiple inclusions Anton Vorontsov
2008-09-23 18:32 ` [PATCH 2/2] USB: driver for Freescale QUICC Engine USB Host Controller Anton Vorontsov
2008-09-23 21:32 ` [PATCH 3/3] " Sergei Shtylyov
2008-09-23 21:35 ` Sergei Shtylyov
2008-09-23 22:57 ` Anton Vorontsov [this message]
2008-09-24 10:24 ` Sergei Shtylyov
2008-09-24 10:48 ` Sergei Shtylyov
2008-09-24 18:59 ` David Brownell
2008-09-24 19:17 ` Sergei Shtylyov
-- strict thread matches above, loose matches on Subject: below --
2008-08-08 16:17 [PATCH 0/3] Patches to support QE " Anton Vorontsov
2008-08-08 16:18 ` [PATCH 3/3] USB: driver for Freescale QUICC Engine " Anton Vorontsov
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