From mboxrd@z Thu Jan 1 00:00:00 1970 From: oliver@neukum.org (Oliver Neukum) Date: Thu, 18 Feb 2010 07:56:14 +0100 Subject: USB mass storage and ARM cache coherency In-Reply-To: <5A47E75E594F054BAF48C5E4FC4B92AB03216236D6@dbde02.ent.ti.com> References: <5A47E75E594F054BAF48C5E4FC4B92AB03216236D6@dbde02.ent.ti.com> Message-ID: <201002180756.14100.oliver@neukum.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Am Mittwoch, 17. Februar 2010 21:30:24 schrieb Gadiyar, Anand: > > Why do you skip mapping the setup packet but not the data packet? > > > > I think that's oversight. For this controller, we need to skip mapping > all buffers used to do transfers on EP0, which is all control transfers. One thing more. Do you have an issue with EP 0 only or all control endpoints? EP 0 must be control, but devices are within spec if they have multiple control endpoints provided EP 0 is control. Regards Oliver