From: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Date: Sun, 18 Aug 2013 08:13:13 +0000 (+0800)
Subject: usb: musb: cppi41: fix missing unlock on error in cppi41_dma_callback()
X-Git-Tag: firefly_0821_release~176^2~5474^2~19^2~20
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=0b5c1e62d80c8ee43b9f8435fe54ed097dba6a3c;hp=bd2fbf3a5602d9721b82e4fc71a68167f3a7ec86;p=firefly-linux-kernel-4.4.55.git

usb: musb: cppi41: fix missing unlock on error in cppi41_dma_callback()

Add the missing unlock before return from function cppi41_dma_callback()
in the error handling case.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Felipe Balbi <balbi@ti.com>
---

diff --git a/drivers/usb/musb/musb_cppi41.c b/drivers/usb/musb/musb_cppi41.c
index e64701d15401..ae959746f77f 100644
--- a/drivers/usb/musb/musb_cppi41.c
+++ b/drivers/usb/musb/musb_cppi41.c
@@ -150,8 +150,10 @@ static void cppi41_dma_callback(void *private_data)
 				remain_bytes,
 				direction,
 				DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
-		if (WARN_ON(!dma_desc))
+		if (WARN_ON(!dma_desc)) {
+			spin_unlock_irqrestore(&musb->lock, flags);
 			return;
+		}
 
 		dma_desc->callback = cppi41_dma_callback;
 		dma_desc->callback_param = channel;