From 2c2da1799ba776c4bd8d51ee46d9f00cb4cc6120 Mon Sep 17 00:00:00 2001
From: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Date: Mon, 4 Apr 2011 13:09:22 +0900
Subject: [PATCH] usb: r8a66597-udc: fix spinlock usage
Because the disconnect function in the composite driver will call spin_lock,
this driver has to call spin_unlock before calling driver->disconnet().
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
drivers/usb/gadget/r8a66597-udc.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/usb/gadget/r8a66597-udc.c b/drivers/usb/gadget/r8a66597-udc.c
index 015118535f77d..6dcc1f68fa604 100644
--- a/drivers/usb/gadget/r8a66597-udc.c
+++ b/drivers/usb/gadget/r8a66597-udc.c
@@ -1083,7 +1083,9 @@ static void irq_device_state(struct r8a66597 *r8a66597)
if (dvsq == DS_DFLT) {
/* bus reset */
+ spin_unlock(&r8a66597->lock);
r8a66597->driver->disconnect(&r8a66597->gadget);
+ spin_lock(&r8a66597->lock);
r8a66597_update_usb_speed(r8a66597);
}
if (r8a66597->old_dvsq == DS_CNFG && dvsq != DS_CNFG)
--
2.30.2