From: oneukum@suse.de (Oliver Neukum)
To: linux-arm-kernel@lists.infradead.org
Subject: Problem with non aligned DMA in usbnet on ARM
Date: Fri, 13 Aug 2010 15:53:19 +0200 [thread overview]
Message-ID: <201008131553.19875.oneukum@suse.de> (raw)
In-Reply-To: <732137.54230.qm@web180303.mail.gq1.yahoo.com>
Am Freitag, 13. August 2010, 15:42:32 schrieb David Brownell:
> > > 2) Require that usb_submit_urb() accept byte aligned buffers.
>
> I believe we already require that. Of course,
> the requirement is on HCDs, not on th
Divers fail if HCDs can't do it. But we've never explicitly said that HCDs
need to be able to do that. We should probably document that requirement.
Regards
Oliver
WARNING: multiple messages have this Message-ID (diff)
From: Oliver Neukum <oneukum-l3A5Bk7waGM@public.gmane.org>
To: David Brownell <david-b-yBeKhBN/0LDR7s880joybQ@public.gmane.org>
Cc: mfuzzey-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
Matthieu CASTET
<matthieu.castet-ITF29qwbsa/QT0dZR+AlfA@public.gmane.org>,
"Russell King - ARM Linux"
<linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org>,
Gary King <GKing-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>,
"linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org"
<linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org>,
"linux-usb" <linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Greg KH <greg-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
Subject: Re: Problem with non aligned DMA in usbnet on ARM
Date: Fri, 13 Aug 2010 15:53:19 +0200 [thread overview]
Message-ID: <201008131553.19875.oneukum@suse.de> (raw)
In-Reply-To: <732137.54230.qm-g47maUHHHF/6X00i2u5GFvu2YVrzzGjVVpNB7YpNyf8@public.gmane.org>
Am Freitag, 13. August 2010, 15:42:32 schrieb David Brownell:
> > > 2) Require that usb_submit_urb() accept byte aligned buffers.
>
> I believe we already require that. Of course,
> the requirement is on HCDs, not on th
Divers fail if HCDs can't do it. But we've never explicitly said that HCDs
need to be able to do that. We should probably document that requirement.
Regards
Oliver
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next prev parent reply other threads:[~2010-08-13 13:53 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-11 9:41 Problem with non aligned DMA in usbnet on ARM Martin Fuzzey
2010-08-11 9:41 ` Martin Fuzzey
2010-08-11 9:54 ` Russell King - ARM Linux
2010-08-11 9:54 ` Russell King - ARM Linux
2010-08-11 10:11 ` Martin Fuzzey
2010-08-11 10:11 ` Martin Fuzzey
2010-08-11 15:04 ` Greg KH
2010-08-11 15:04 ` Greg KH
2010-08-11 16:08 ` Martin Fuzzey
2010-08-11 16:08 ` Martin Fuzzey
2010-08-11 17:42 ` Greg KH
2010-08-11 17:42 ` Greg KH
2010-08-11 19:07 ` Martin Fuzzey
2010-08-11 19:07 ` Martin Fuzzey
2010-08-11 20:13 ` Greg KH
2010-08-11 20:13 ` Greg KH
2010-08-11 22:31 ` Martin Fuzzey
2010-08-11 22:31 ` Martin Fuzzey
2010-08-12 17:01 ` Matthieu CASTET
2010-08-12 17:01 ` Matthieu CASTET
2010-08-11 19:10 ` Oliver Neukum
2010-08-11 19:10 ` Oliver Neukum
2010-08-11 9:59 ` Matthieu CASTET
2010-08-11 9:59 ` Matthieu CASTET
2010-08-11 11:38 ` Martin Fuzzey
2010-08-11 11:38 ` Martin Fuzzey
2010-08-11 15:54 ` Gary King
2010-08-11 20:35 ` Russell King - ARM Linux
2010-08-11 22:20 ` Martin Fuzzey
2010-08-11 22:20 ` Martin Fuzzey
2010-08-11 22:47 ` Russell King - ARM Linux
2010-08-11 22:47 ` Russell King - ARM Linux
2010-08-12 17:08 ` Matthieu CASTET
2010-08-12 17:08 ` Matthieu CASTET
2010-08-13 10:06 ` Martin Fuzzey
2010-08-13 10:06 ` Martin Fuzzey
2010-08-13 10:58 ` Oliver Neukum
2010-08-13 10:58 ` Oliver Neukum
2010-08-13 13:42 ` David Brownell
2010-08-13 13:42 ` David Brownell
2010-08-13 13:53 ` Oliver Neukum [this message]
2010-08-13 13:53 ` Oliver Neukum
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