From mboxrd@z Thu Jan 1 00:00:00 1970 From: Oliver Neukum Subject: Re: Problem with non aligned DMA in usbnet on ARM Date: Fri, 13 Aug 2010 15:53:19 +0200 Message-ID: <201008131553.19875.oneukum@suse.de> References: <732137.54230.qm@web180303.mail.gq1.yahoo.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Cc: mfuzzey-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, Matthieu CASTET , "Russell King - ARM Linux" , Gary King , "linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org" , "linux-usb" , "netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , Greg KH To: David Brownell Return-path: In-Reply-To: <732137.54230.qm-g47maUHHHF/6X00i2u5GFvu2YVrzzGjVVpNB7YpNyf8@public.gmane.org> Sender: linux-usb-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: netdev.vger.kernel.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 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html