Re: [patch 1/4] USB: musb: add missing unlock in cppi_interrupt()

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Hello.

On 20-03-2011 14:14, Dan Carpenter wrote:

We should unlock before returning here.

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

   No. It's only true for DM646x, and false for other DaVincis.

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);

   Thanks for fixing this.

WBR, Sergei
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