Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030996AbaGCKGh (ORCPT ); Thu, 3 Jul 2014 06:06:37 -0400 Received: from youngberry.canonical.com ([91.189.89.112]:51757 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755019AbaGCJWR (ORCPT ); Thu, 3 Jul 2014 05:22:17 -0400 From: Luis Henriques To: linux-kernel@vger.kernel.org, stable@vger.kernel.org, kernel-team@lists.ubuntu.com Cc: Johan Hovold , Greg Kroah-Hartman , Luis Henriques Subject: [PATCH 3.11 059/198] USB: option: fix runtime PM handling Date: Thu, 3 Jul 2014 10:18:22 +0100 Message-Id: <1404379241-8590-60-git-send-email-luis.henriques@canonical.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1404379241-8590-1-git-send-email-luis.henriques@canonical.com> References: <1404379241-8590-1-git-send-email-luis.henriques@canonical.com> X-Extended-Stable: 3.11 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.11.10.13 -stable review patch. If anyone has any objections, please let me know. ------------------ From: Johan Hovold commit acf47d4f9c39b1cba467aa9442fc2efe0b1da741 upstream. Fix potential I/O while runtime suspended due to missing PM operations in send_setup. Fixes: 383cedc3bb43 ("USB: serial: full autosuspend support for the option driver") Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman Signed-off-by: Luis Henriques --- drivers/usb/serial/option.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index 948a19f0cdf7..70ede84f4f6b 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -1925,6 +1925,7 @@ static int option_send_setup(struct usb_serial_port *port) struct option_private *priv = intfdata->private; struct usb_wwan_port_private *portdata; int val = 0; + int res; portdata = usb_get_serial_port_data(port); @@ -1933,9 +1934,17 @@ static int option_send_setup(struct usb_serial_port *port) if (portdata->rts_state) val |= 0x02; - return usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), + res = usb_autopm_get_interface(serial->interface); + if (res) + return res; + + res = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), 0x22, 0x21, val, priv->bInterfaceNumber, NULL, 0, USB_CTRL_SET_TIMEOUT); + + usb_autopm_put_interface(serial->interface); + + return res; } MODULE_AUTHOR(DRIVER_AUTHOR); -- 1.9.1 -- 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/