From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755102AbbHEWE5 (ORCPT ); Wed, 5 Aug 2015 18:04:57 -0400 Received: from youngberry.canonical.com ([91.189.89.112]:38635 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932068AbbHEVu0 (ORCPT ); Wed, 5 Aug 2015 17:50:26 -0400 From: Kamal Mostafa To: linux-kernel@vger.kernel.org, stable@vger.kernel.org, kernel-team@lists.ubuntu.com Cc: Sebastian Andrzej Siewior , Felipe Balbi , Kamal Mostafa Subject: [PATCH 3.19.y-ckt 065/107] usb: musb: host: rely on port_mode to call musb_start() Date: Wed, 5 Aug 2015 14:48:57 -0700 Message-Id: <1438811379-384-66-git-send-email-kamal@canonical.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1438811379-384-1-git-send-email-kamal@canonical.com> References: <1438811379-384-1-git-send-email-kamal@canonical.com> X-Extended-Stable: 3.19 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.19.8-ckt5 -stable review patch. If anyone has any objections, please let me know. ------------------ From: Felipe Balbi commit be9d39881fc4fa39a64b6eed6bab5d9ee5125344 upstream. Currently, we're calling musb_start() twice for DRD ports in some situations. This has been observed to cause enumeration issues after suspend/resume cycles with AM335x. In order to fix the problem, we just have to fix the check on musb_has_gadget() so that it only returns true if current mode is Host and ignore the fact that we have or not a gadget driver loaded. Fixes: ae44df2e21b5 (usb: musb: call musb_start() only once in OTG mode) Cc: Sebastian Andrzej Siewior Tested-by: Sekhar Nori Signed-off-by: Felipe Balbi Signed-off-by: Kamal Mostafa --- drivers/usb/musb/musb_virthub.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/usb/musb/musb_virthub.c b/drivers/usb/musb/musb_virthub.c index a9c47315..d91dac9 100644 --- a/drivers/usb/musb/musb_virthub.c +++ b/drivers/usb/musb/musb_virthub.c @@ -274,9 +274,7 @@ static int musb_has_gadget(struct musb *musb) #ifdef CONFIG_USB_MUSB_HOST return 1; #else - if (musb->port_mode == MUSB_PORT_MODE_HOST) - return 1; - return musb->g.dev.driver != NULL; + return musb->port_mode == MUSB_PORT_MODE_HOST; #endif } -- 1.9.1