From: H Hartley Sweeten <hsweeten@visionengravers.com>
Date: Tue, 3 Dec 2013 19:07:25 +0000 (-0700)
Subject: staging: comedi: ni_pcimio: tidy up the irq request
X-Git-Tag: firefly_0821_release~176^2~4489^2~571
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=c108a5e09803850217c5b9d9079f99383401a312;p=firefly-linux-kernel-4.4.55.git

staging: comedi: ni_pcimio: tidy up the irq request

The irq is only needed to support async commands. Tidy up the
code that does the request_irq() and remove the noise.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/staging/comedi/drivers/ni_pcimio.c b/drivers/staging/comedi/drivers/ni_pcimio.c
index 1166c45da49e..ec4fa3d839c4 100644
--- a/drivers/staging/comedi/drivers/ni_pcimio.c
+++ b/drivers/staging/comedi/drivers/ni_pcimio.c
@@ -1469,6 +1469,7 @@ static int pcimio_auto_attach(struct comedi_device *dev,
 	struct pci_dev *pcidev = comedi_to_pci_dev(dev);
 	const struct ni_board_struct *board = NULL;
 	struct ni_private *devpriv;
+	unsigned int irq;
 	int ret;
 
 	if (context < ARRAY_SIZE(ni_boards))
@@ -1530,18 +1531,12 @@ static int pcimio_auto_attach(struct comedi_device *dev,
 	if (board->reg_type == ni_reg_6143)
 		init_6143(dev);
 
-	dev->irq = mite_irq(devpriv->mite);
-
-	if (dev->irq == 0) {
-		pr_warn("unknown irq (bad)\n");
-	} else {
-		pr_debug("( irq = %u )\n", dev->irq);
-		ret = request_irq(dev->irq, ni_E_interrupt, NI_E_IRQ_FLAGS,
-				  DRV_NAME, dev);
-		if (ret < 0) {
-			pr_warn("irq not available\n");
-			dev->irq = 0;
-		}
+	irq = mite_irq(devpriv->mite);
+	if (irq) {
+		ret = request_irq(irq, ni_E_interrupt, NI_E_IRQ_FLAGS,
+				  dev->board_name, dev);
+		if (ret == 0)
+			dev->irq = irq;
 	}
 
 	ret = ni_E_init(dev);