Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932068AbbGaT4Y (ORCPT ); Fri, 31 Jul 2015 15:56:24 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:46397 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754305AbbGaTws (ORCPT ); Fri, 31 Jul 2015 15:52:48 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Sebastian Andrzej Siewior , Sekhar Nori , Felipe Balbi Subject: [PATCH 4.1 106/267] usb: musb: host: rely on port_mode to call musb_start() Date: Fri, 31 Jul 2015 12:39:17 -0700 Message-Id: <20150731194005.236337384@linuxfoundation.org> X-Mailer: git-send-email 2.5.0 In-Reply-To: <20150731194001.933895871@linuxfoundation.org> References: <20150731194001.933895871@linuxfoundation.org> User-Agent: quilt/0.64 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1522 Lines: 47 4.1-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: Greg Kroah-Hartman --- drivers/usb/musb/musb_virthub.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) --- a/drivers/usb/musb/musb_virthub.c +++ b/drivers/usb/musb/musb_virthub.c @@ -273,9 +273,7 @@ static int musb_has_gadget(struct 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 } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/