Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756867AbbDPHme (ORCPT ); Thu, 16 Apr 2015 03:42:34 -0400 Received: from mail-wg0-f49.google.com ([74.125.82.49]:35267 "EHLO mail-wg0-f49.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752118AbbDPHmX (ORCPT ); Thu, 16 Apr 2015 03:42:23 -0400 Message-ID: <1429170139.26621.3.camel@linaro.org> Subject: Re: [PATCH] usb: ehci-msm: Don't ioremap configuration space exclusively From: "Ivan T. Ivanov" To: Vivek Gautam Cc: Alan Stern , Vivek Gautam , Greg Kroah-Hartman , USB list , Kernel development list , linux-arm-msm@vger.kernel.org Date: Thu, 16 Apr 2015 10:42:19 +0300 In-Reply-To: References: <1428568436-9134-1-git-send-email-ivan.ivanov@linaro.org> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.13.7-fta1.2~trusty Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 928 Lines: 30 Hi, On Wed, 2015-04-15 at 21:28 +0530, Vivek Gautam wrote: > On Thu, Apr 9, 2015 at 8:19 PM, Alan Stern wrote: > > On Thu, 9 Apr 2015, Ivan T. Ivanov wrote: > > > > > This allow same IO space to be shared between HCD and Device > > > controller driver. Which can be loaded simultaneously and > > > started/stopped on demand by USB OTG PHY driver. > > Are you sure ? No. > Will ehci controller registers overlap with the Device controller's register > region ? > Well, not exactly DC vs HC region, but at least USB_AHBBURST, USB_AHBMODE, USB_USBMODE are used by both OTG phy-msm-usb and this ehci-msm driver. And this is broken right now. Ivan -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/