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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,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 B202FC43603 for ; Thu, 19 Dec 2019 18:42:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7BC8124672 for ; Thu, 19 Dec 2019 18:42:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1576780959; bh=SQ+63E8dRGVFKoxnKVDyx3YwGbAdRpIHTG3O4filuZQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Kja/Mmt4h2vz50SoXbdv0oHZ7t1RnLz5bP5ijKr242XnWMYB4JlUI+FvnuaW5n4DP NbGENRDbdQTjgtGmjfoXsegoCBli1HO+1VkjQIJ+RkQHeCKwva6S2dWx8PXBpUuq46 V2eHj0eqI5B+yMxtaqWnmDiiQMMP+3r/Yuzg8P3g= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728723AbfLSSmi (ORCPT ); Thu, 19 Dec 2019 13:42:38 -0500 Received: from mail.kernel.org ([198.145.29.99]:33814 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728695AbfLSSmd (ORCPT ); Thu, 19 Dec 2019 13:42:33 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id AFB0024672; Thu, 19 Dec 2019 18:42:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1576780953; bh=SQ+63E8dRGVFKoxnKVDyx3YwGbAdRpIHTG3O4filuZQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=kyvfdWcSrs9jmHX9/aB7OatsyAwCZ9beiJjWMRmkZcV6gr+NUes6zyEfM9asQOFtR yGjmuc2/fIyFXwa2+ZU3r6o5vm0d0YFGdHOElGe8VgvHVQc3PdWi+OJeUiJJJCNZq1 FQIRP2a7DCOIrfgVkX9GADSK4OFnuZHLLxjSu60Q= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Marek Szyprowski , Chanwoo Choi , Sasha Levin Subject: [PATCH 4.9 022/199] extcon: max8997: Fix lack of path setting in USB device mode Date: Thu, 19 Dec 2019 19:31:44 +0100 Message-Id: <20191219183216.039083350@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20191219183214.629503389@linuxfoundation.org> References: <20191219183214.629503389@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Marek Szyprowski [ Upstream commit a2dc50914744eea9f83a70a5db0486be625e5dc0 ] MAX8997 driver disables automatic path selection from MicroUSB connector and manually sets path to either UART or USB lines. However the code for setting USB path worked only for USB host mode (when ID pin is set to ground). When standard USB cable (USB device mode) is connected, path registers are not touched. This means that once the non-USB accessory is connected to MAX8997-operated micro USB port, the path is no longer set to USB and USB device mode doesn't work. This patch fixes it by setting USB path both for USB and USB host modes. Signed-off-by: Marek Szyprowski Signed-off-by: Chanwoo Choi Signed-off-by: Sasha Levin --- drivers/extcon/extcon-max8997.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/drivers/extcon/extcon-max8997.c b/drivers/extcon/extcon-max8997.c index 4a0612fb9c070..b9b48d45a6dc4 100644 --- a/drivers/extcon/extcon-max8997.c +++ b/drivers/extcon/extcon-max8997.c @@ -321,12 +321,10 @@ static int max8997_muic_handle_usb(struct max8997_muic_info *info, { int ret = 0; - if (usb_type == MAX8997_USB_HOST) { - ret = max8997_muic_set_path(info, info->path_usb, attached); - if (ret < 0) { - dev_err(info->dev, "failed to update muic register\n"); - return ret; - } + ret = max8997_muic_set_path(info, info->path_usb, attached); + if (ret < 0) { + dev_err(info->dev, "failed to update muic register\n"); + return ret; } switch (usb_type) { -- 2.20.1