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From: Dan Carpenter <error27@gmail.com>
To: kernel-janitors@vger.kernel.org
Subject: [patch 1/4] USB: musb: add missing unlock in cppi_interrupt()
Date: Sun, 20 Mar 2011 11:14:36 +0000	[thread overview]
Message-ID: <20110320111436.GI2008@bicker> (raw)

We should unlock before returning here.

Signed-off-by: Dan Carpenter <error27@gmail.com>
---
Compile tested only.  Isn't cppi->irq always true at this point?

diff --git a/drivers/usb/musb/cppi_dma.c b/drivers/usb/musb/cppi_dma.c
index de55a3c..6385eeb 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);
 

             reply	other threads:[~2011-03-20 11:14 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-03-20 11:14 Dan Carpenter [this message]
2011-03-20 14:02 ` [patch 1/4] USB: musb: add missing unlock in cppi_interrupt() Sergei Shtylyov
2011-03-22  9:21 ` Felipe Balbi

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