From: Robert Baldyga <r.baldyga@samsung.com>
Date: Thu, 21 Nov 2013 12:49:17 +0000 (+0100)
Subject: usb: gadget: s3c-hsotg: fix spinlock locking
X-Git-Tag: accepted/tizen/common/20141203.182822~902^2~10^2~24
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=93f599f279ab56b1761c76e53f9753b26aeefe9e;p=platform%2Fkernel%2Flinux-arm64.git

usb: gadget: s3c-hsotg: fix spinlock locking

This patch adds missing spinlock locking in s3c_hsotg_complete_setup function,
and unlocking for gadget setup call.

Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
---

diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c
index 9875d9c..56fad76 100644
--- a/drivers/usb/gadget/s3c-hsotg.c
+++ b/drivers/usb/gadget/s3c-hsotg.c
@@ -1245,7 +1245,9 @@ static void s3c_hsotg_process_control(struct s3c_hsotg *hsotg,
 	/* as a fallback, try delivering it to the driver to deal with */
 
 	if (ret == 0 && hsotg->driver) {
+		spin_unlock(&hsotg->lock);
 		ret = hsotg->driver->setup(&hsotg->gadget, ctrl);
+		spin_lock(&hsotg->lock);
 		if (ret < 0)
 			dev_dbg(hsotg->dev, "driver->setup() ret %d\n", ret);
 	}
@@ -1308,10 +1310,12 @@ static void s3c_hsotg_complete_setup(struct usb_ep *ep,
 		return;
 	}
 
+	spin_lock(&hsotg->lock);
 	if (req->actual == 0)
 		s3c_hsotg_enqueue_setup(hsotg);
 	else
 		s3c_hsotg_process_control(hsotg, req->buf);
+	spin_unlock(&hsotg->lock);
 }
 
 /**