From: Dan Carpenter <error27@gmail.com>
Date: Sun, 20 Mar 2011 11:14:36 +0000 (+0300)
Subject: USB: musb: add missing unlock in cppi_interrupt()
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=ec63bf6c06b01ceeb6048a2b9fa9e73060259307;p=linux-beck.git

USB: musb: add missing unlock in cppi_interrupt()

We should unlock before returning here.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
---

diff --git a/drivers/usb/musb/cppi_dma.c b/drivers/usb/musb/cppi_dma.c
index de55a3c3259a..6385eeb44a07 100644
--- a/drivers/usb/musb/cppi_dma.c
+++ b/drivers/usb/musb/cppi_dma.c
@@ -1167,8 +1167,11 @@ irqreturn_t cppi_interrupt(int irq, void *dev_id)
 	tx = musb_readl(tibase, DAVINCI_TXCPPI_MASKED_REG);
 	rx = musb_readl(tibase, DAVINCI_RXCPPI_MASKED_REG);
 
-	if (!tx && !rx)
+	if (!tx && !rx) {
+		if (cppi->irq)
+			spin_unlock_irqrestore(&musb->lock, flags);
 		return IRQ_NONE;
+	}
 
 	DBG(4, "CPPI IRQ Tx%x Rx%x\n", tx, rx);