From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-11.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DBEABC433B4 for ; Wed, 14 Apr 2021 08:12:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BEE07613A9 for ; Wed, 14 Apr 2021 08:12:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1349916AbhDNINT (ORCPT ); Wed, 14 Apr 2021 04:13:19 -0400 Received: from mail.kernel.org ([198.145.29.99]:34018 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1349935AbhDNIMb (ORCPT ); Wed, 14 Apr 2021 04:12:31 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id BF3776128E; Wed, 14 Apr 2021 08:12:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1618387929; bh=qpvi9YgbSNvAK7mKvo9Ce2AsQoRwog9SLpIlnYd26ro=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=Cn9jzUl1j1g5w/52kMhvjpy+gXwxrftO2H7TshFdp9JKTCFTZgKI2wIcki1tTF8T7 7lNnPaTXfEjpCn7CXUXYXsQp1PqC7+0mZOMAk+E1YqJCS1BtjorZ+wwP7x2SGdcmfi cWtdLvApPh578SYlTbygHPvcQ98U+c/Wm2ggP4n2n0OFZQhH6ABPkatFDdHH/zIR69 xMxLez6nzbP0RWyIe6gbmRBHLLlrb5NtgLCiUJcHrAaa05JMqI6nxx+TZ7c63gOL8h 0X27EA9R0Dvxg71ByZX1cSqEQTf/PQpoLaz5Akp3UHpbHAbyrDSuaTbocKDFr+aOM3 yNa4faJ26lpxw== From: Felipe Balbi To: Sandeep Maheswaram , Greg Kroah-Hartman , Stephen Boyd , Doug Anderson , Matthias Kaehlcke Cc: linux-arm-msm@vger.kernel.org, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, Manu Gautam , Sandeep Maheswaram Subject: Re: [PATCH v2] usb: dwc3: core: Add shutdown callback for dwc3 In-Reply-To: <1618380209-20114-1-git-send-email-sanm@codeaurora.org> References: <1618380209-20114-1-git-send-email-sanm@codeaurora.org> Date: Wed, 14 Apr 2021 11:12:02 +0300 Message-ID: <877dl5p9nx.fsf@kernel.org> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha256; protocol="application/pgp-signature" Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org --=-=-= Content-Type: text/plain Content-Transfer-Encoding: quoted-printable Sandeep Maheswaram writes: > This patch adds a shutdown callback to USB DWC core driver to ensure that > it is properly shutdown in reboot/shutdown path. This is required > where SMMU address translation is enabled like on SC7180 > SoC and few others. If the hardware is still accessing memory after > SMMU translation is disabled as part of SMMU shutdown callback in > system reboot or shutdown path, then IOVAs(I/O virtual address) > which it was using will go on the bus as the physical addresses which > might result in unknown crashes (NoC/interconnect errors). > > Signed-off-by: Sandeep Maheswaram Acked-by: Felipe Balbi =2D-=20 balbi --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQJFBAEBCAAvFiEElLzh7wn96CXwjh2IzL64meEamQYFAmB2o9IRHGJhbGJpQGtl cm5lbC5vcmcACgkQzL64meEamQYSfg/+P7+iJzxCwEPMx+ioEmfCiBsenhqHbTgt w/9Bt0Z3tnGnc7QQgZn4ohQf/hVLWTZyG7+PGgNwFVJJxJx9lqY3U5l+GGpGFuQw burUM7tYGDuoIwHQfbNT6kNP5Q6xh1gxXOBVXsf0+5vDOgqVIfYDGW49bcNGLczq g6YsO8cWepCistHlB2i55i40d+GgZgwRGKgpjXKHPMUNzIQlgPphfoIWvgJGqAoG wTe1IKjuM8cGVYJkDYEzAsU6fons25j22mt5Z8KeN/tfEmzkUdvE2q5P7UyTzXeL xM1Q8AfzYp4VNbsVU4+VCLS1HfTK5GJMEHHTFuxhKbEKB0vb3xJI36bvEFerf/is jNPJGD5vSpjaPUXCJwdcXkNSXjSNYVtEO/GqsaxzGBRs1BtHUybSjkMFRtmeZTEi LNUpk11eXQRymb+XPE0FuuwuxSQtsvkT9A0qOg+Z6yPJM9Kv9XNNT9WY8NAbI/9l 8ty47gH6yz4UXHSU5pDT2XXM/8zdQB69AU15swi/1ot9ZTM5ohqJ2asH8oZ6LTfG y4hFNZ4y+vbrTuOTbKBe6i6MknrCasVWAGIrJoK3Yvr3Az5PKzR31aNOdbnqw+9Z zCi/rVxV+itbVzATX9mJx5k1anEoR3bKOcpG52Ah2W2+CuI8VY8FD4AMeb0lf7kp p2NO7FCOvOY= =hQbm -----END PGP SIGNATURE----- --=-=-=--