From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ming Lei Subject: [PATCH 18/50] USB: serial: symbolserial: spin_lock in complete() cleanup Date: Thu, 11 Jul 2013 17:05:41 +0800 Message-ID: <1373533573-12272-19-git-send-email-ming.lei@canonical.com> References: <1373533573-12272-1-git-send-email-ming.lei@canonical.com> Return-path: In-Reply-To: <1373533573-12272-1-git-send-email-ming.lei@canonical.com> Sender: netdev-owner@vger.kernel.org To: Greg Kroah-Hartman Cc: linux-usb@vger.kernel.org, Oliver Neukum , Alan Stern , linux-input@vger.kernel.org, linux-bluetooth@vger.kernel.org, netdev@vger.kernel.org, linux-wireless@vger.kernel.org, linux-media@vger.kernel.org, alsa-devel@alsa-project.org, Ming Lei , Johan Hovold List-Id: linux-input@vger.kernel.org Complete() will be run with interrupt enabled, so change to spin_lock_irqsave(). Cc: Johan Hovold Signed-off-by: Ming Lei --- drivers/usb/serial/symbolserial.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/usb/serial/symbolserial.c b/drivers/usb/serial/symbolserial.c index 9b16489..b4f5cbe 100644 --- a/drivers/usb/serial/symbolserial.c +++ b/drivers/usb/serial/symbolserial.c @@ -41,6 +41,7 @@ static void symbol_int_callback(struct urb *urb) int status = urb->status; int result; int data_length; + unsigned long flags; switch (status) { case 0: @@ -81,7 +82,7 @@ static void symbol_int_callback(struct urb *urb) } exit: - spin_lock(&priv->lock); + spin_lock_irqsave(&priv->lock, flags); /* Continue trying to always read if we should */ if (!priv->throttled) { @@ -92,7 +93,7 @@ exit: __func__, result); } else priv->actually_throttled = true; - spin_unlock(&priv->lock); + spin_unlock_irqrestore(&priv->lock, flags); } static int symbol_open(struct tty_struct *tty, struct usb_serial_port *port) -- 1.7.9.5