netdev - [PATCH 17/50] USB: serial: sierra: spin

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Date:	Thu, 11 Jul 2013 17:05:40 +0800
From:	Ming Lei <ming.lei@...onical.com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	linux-usb@...r.kernel.org, Oliver Neukum <oliver@...kum.org>,
	Alan Stern <stern@...land.harvard.edu>,
	linux-input@...r.kernel.org, linux-bluetooth@...r.kernel.org,
	netdev@...r.kernel.org, linux-wireless@...r.kernel.org,
	linux-media@...r.kernel.org, alsa-devel@...a-project.org,
	Ming Lei <ming.lei@...onical.com>,
	Johan Hovold <jhovold@...il.com>
Subject: [PATCH 17/50] USB: serial: sierra: spin_lock in complete() cleanup

Complete() will be run with interrupt enabled, so change to
spin_lock_irqsave().

Cc: Johan Hovold <jhovold@...il.com>
Signed-off-by: Ming Lei <ming.lei@...onical.com>
---
 drivers/usb/serial/sierra.c |    9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c
index de958c5..e79b6ad 100644
--- a/drivers/usb/serial/sierra.c
+++ b/drivers/usb/serial/sierra.c
@@ -433,6 +433,7 @@ static void sierra_outdat_callback(struct urb *urb)
 	struct sierra_port_private *portdata = usb_get_serial_port_data(port);
 	struct sierra_intf_private *intfdata;
 	int status = urb->status;
+	unsigned long flags;
 
 	intfdata = port->serial->private;
 
@@ -443,12 +444,12 @@ static void sierra_outdat_callback(struct urb *urb)
 		dev_dbg(&port->dev, "%s - nonzero write bulk status "
 		    "received: %d\n", __func__, status);
 
-	spin_lock(&portdata->lock);
+	spin_lock_irqsave(&portdata->lock, flags);
 	--portdata->outstanding_urbs;
-	spin_unlock(&portdata->lock);
-	spin_lock(&intfdata->susp_lock);
+	spin_unlock_irqrestore(&portdata->lock, flags);
+	spin_lock_irqsave(&intfdata->susp_lock, flags);
 	--intfdata->in_flight;
-	spin_unlock(&intfdata->susp_lock);
+	spin_unlock_irqrestore(&intfdata->susp_lock, flags);
 
 	usb_serial_port_softint(port);
 }
-- 
1.7.9.5

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