From patchwork Mon Jun 7 13:14:37 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Heikki Krogerus X-Patchwork-Id: 455661 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT 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 2069EC47082 for ; Mon, 7 Jun 2021 13:14:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F3B0D610FC for ; Mon, 7 Jun 2021 13:14:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230294AbhFGNQP (ORCPT ); Mon, 7 Jun 2021 09:16:15 -0400 Received: from mga06.intel.com ([134.134.136.31]:17596 "EHLO mga06.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230286AbhFGNQP (ORCPT ); Mon, 7 Jun 2021 09:16:15 -0400 IronPort-SDR: tBavJunpLrIJaTDUFzwAqPVD9WU12Nlr3q/LBHCYUyA1e88O+w+a0R3QywmAO4XB6NW3PRHdFE eAUKRS/85Z4Q== X-IronPort-AV: E=McAfee;i="6200,9189,10008"; a="265773975" X-IronPort-AV: E=Sophos;i="5.83,255,1616482800"; d="scan'208";a="265773975" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Jun 2021 06:14:23 -0700 IronPort-SDR: Rukd6daE8+rrbDufK/dGwRtteilroJL0Sg0stGAun2qE5Ec665Q2/CGRi9qJMviz+NqAK1kSo5 3qD2rzxnjxFg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.83,255,1616482800"; d="scan'208";a="551881872" Received: from black.fi.intel.com (HELO black.fi.intel.com.) ([10.237.72.28]) by fmsmga001.fm.intel.com with ESMTP; 07 Jun 2021 06:14:22 -0700 From: Heikki Krogerus To: Benjamin Berg Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [RFC PATCH 2/7] usb: typec: ucsi: Don't stop alt mode registration on busy condition Date: Mon, 7 Jun 2021 16:14:37 +0300 Message-Id: <20210607131442.20121-3-heikki.krogerus@linux.intel.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210607131442.20121-1-heikki.krogerus@linux.intel.com> References: <20210607131442.20121-1-heikki.krogerus@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org If the PPM tells it's busy, we can now simply try again. Signed-off-by: Heikki Krogerus --- drivers/usb/typec/ucsi/ucsi.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c index 366c8a468bc18..a8e0e31dcddf5 100644 --- a/drivers/usb/typec/ucsi/ucsi.c +++ b/drivers/usb/typec/ucsi/ucsi.c @@ -437,8 +437,11 @@ static int ucsi_register_altmodes(struct ucsi_connector *con, u8 recipient) command |= UCSI_GET_ALTMODE_CONNECTOR_NUMBER(con->num); command |= UCSI_GET_ALTMODE_OFFSET(i); len = ucsi_send_command(con->ucsi, command, alt, sizeof(alt)); - if (len <= 0) + if (len <= 0) { + if (len == -EBUSY) + continue; return len; + } /* * This code is requesting one alt mode at a time, but some PPMs