From: Daeseok Youn <daeseok.youn@gmail.com>
Date: Tue, 25 Feb 2014 01:13:49 +0000 (+0900)
Subject: staging: ced401: fix double unlock bug
X-Git-Tag: firefly_0821_release~176^2~4193^2~868
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=223eaa377d42481c209df2d425032417b1762811;p=firefly-linux-kernel-4.4.55.git

staging: ced401: fix double unlock bug

After spin_lock() is called, all of if-else conditions in this brace
should reach the end of else and spin_unlock() must be called.
So It doesn't need to call spin_unlock() without a return statement
for handling an error.

Also sparse says:
drivers/staging/ced1401/usb1401.c:1080:28: warning:
 context imbalance in 'Handle1401Esc' - unexpected unlock

Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/staging/ced1401/usb1401.c b/drivers/staging/ced1401/usb1401.c
index f441e33660fe..c281fdabb4ed 100644
--- a/drivers/staging/ced1401/usb1401.c
+++ b/drivers/staging/ced1401/usb1401.c
@@ -1054,7 +1054,6 @@ static int Handle1401Esc(DEVICE_EXTENSION *pdx, char *pCh,
 				/*  This can never happen, really */
 				dev_err(&pdx->interface->dev,
 					"ERROR: DMA setup while transfer still waiting\n");
-				spin_unlock(&pdx->stagedLock);
 			} else {
 				if ((wTransType == TM_EXTTOHOST)
 				    || (wTransType == TM_EXTTO1401)) {