From patchwork Wed May 4 16:44:22 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 569704 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 51EE0C433F5 for ; Wed, 4 May 2022 17:09:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1355350AbiEDRMx (ORCPT ); Wed, 4 May 2022 13:12:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40998 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1356834AbiEDRJp (ORCPT ); Wed, 4 May 2022 13:09:45 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C7FA02E9E3; Wed, 4 May 2022 09:55:53 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 8AE98B82795; Wed, 4 May 2022 16:55:52 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 41CA1C385AA; Wed, 4 May 2022 16:55:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1651683351; bh=IzHnTEH3xlGhfuyQg4J8ArZeDQO0q0tTgX2u3BJ5BDk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GpRKz31fOgTmqBE1PL/iJdbzcgPcwKHQ7OzsoZAE/UWu5z7zuLH8aBq1z5p8ePphk J2MAyQrkuWD6fgROMvVPnvWAiZhPxS2lkvBozDe6LHZMKElWz9Shbw237U7WNWLT5y xtv+1F3gLJOByASU715BEl6lXK3THUQXM2nfoqL4= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, stable , Sven Peter Subject: [PATCH 5.17 024/225] usb: dwc3: Try usb-role-switch first in dwc3_drd_init Date: Wed, 4 May 2022 18:44:22 +0200 Message-Id: <20220504153112.490831148@linuxfoundation.org> X-Mailer: git-send-email 2.36.0 In-Reply-To: <20220504153110.096069935@linuxfoundation.org> References: <20220504153110.096069935@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Sven Peter commit ab7aa2866d295438dc60522f85c5421c6b4f1507 upstream. If the PHY controller node has a "port" dwc3 tries to find an extcon device even when "usb-role-switch" is present. This happens because dwc3_get_extcon() sees that "port" node and then calls extcon_find_edev_by_node() which will always return EPROBE_DEFER in that case. On the other hand, even if an extcon was present and dwc3_get_extcon() was successful it would still be ignored in favor of "usb-role-switch". Let's just first check if "usb-role-switch" is configured in the device tree and directly use it instead and only try to look for an extcon device otherwise. Fixes: 8a0a13799744 ("usb: dwc3: Registering a role switch in the DRD code.") Cc: stable Signed-off-by: Sven Peter Link: https://lore.kernel.org/r/20220411155300.9766-1-sven@svenpeter.dev Signed-off-by: Greg Kroah-Hartman --- drivers/usb/dwc3/drd.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) --- a/drivers/usb/dwc3/drd.c +++ b/drivers/usb/dwc3/drd.c @@ -571,16 +571,15 @@ int dwc3_drd_init(struct dwc3 *dwc) { int ret, irq; + if (ROLE_SWITCH && + device_property_read_bool(dwc->dev, "usb-role-switch")) + return dwc3_setup_role_switch(dwc); + dwc->edev = dwc3_get_extcon(dwc); if (IS_ERR(dwc->edev)) return PTR_ERR(dwc->edev); - if (ROLE_SWITCH && - device_property_read_bool(dwc->dev, "usb-role-switch")) { - ret = dwc3_setup_role_switch(dwc); - if (ret < 0) - return ret; - } else if (dwc->edev) { + if (dwc->edev) { dwc->edev_nb.notifier_call = dwc3_drd_notifier; ret = extcon_register_notifier(dwc->edev, EXTCON_USB_HOST, &dwc->edev_nb);