linux-kernel - [PATCH] uio_pdrv_genirq: get irq through platform resource if not set otherwise

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Date:	Mon, 14 May 2012 18:48:17 +0200
From:	Benedikt Spranger <b.spranger@...utronix.de>
To:	hjk@...sjkoch.de
Cc:	gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org,
	magnus.damm@...il.com, Benedikt Spranger <b.spranger@...utronix.de>
Subject: [PATCH] uio_pdrv_genirq: get irq through platform resource if not set otherwise

Platform devices are configured through platform resources. The interrupt
in the driver uio_pdrv_genirq is instead configured through a side channel
i.e. the platform data structure. Make it possible to use the generic
configuration scheme via platform resource.

Signed-off-by: Benedikt Spranger <b.spranger@...utronix.de>
---
 drivers/uio/uio_pdrv_genirq.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/drivers/uio/uio_pdrv_genirq.c b/drivers/uio/uio_pdrv_genirq.c
index b98371d..42202cd 100644
--- a/drivers/uio/uio_pdrv_genirq.c
+++ b/drivers/uio/uio_pdrv_genirq.c
@@ -146,6 +146,14 @@ static int uio_pdrv_genirq_probe(struct platform_device *pdev)
 	priv->flags = 0; /* interrupt is enabled to begin with */
 	priv->pdev = pdev;
 
+	if (!uioinfo->irq) {
+		ret = platform_get_irq(pdev, 0);
+		if (ret < 0) {
+			dev_err(&pdev->dev, "failed to get IRQ\n");
+			goto bad0;
+		}
+		uioinfo->irq = ret;
+	}
 	uiomem = &uioinfo->mem[0];
 
 	for (i = 0; i < pdev->num_resources; ++i) {
-- 
1.7.9.1

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