From: Alexander Aring <alex.aring@gmail.com>
Date: Thu, 24 Apr 2014 17:09:15 +0000 (+0200)
Subject: at86rf230: reset irq line before irq request
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=196269464d4ab950a40c7ac3dac266773aa78b8c;p=deliverable%2Flinux.git

at86rf230: reset irq line before irq request

This patch resets the irq line before we are requesting the irq. This
avoids pending interrupts before requesting.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/ieee802154/at86rf230.c b/drivers/net/ieee802154/at86rf230.c
index 960444b449d9..994c334fb4f4 100644
--- a/drivers/net/ieee802154/at86rf230.c
+++ b/drivers/net/ieee802154/at86rf230.c
@@ -1172,13 +1172,13 @@ static int at86rf230_probe(struct spi_device *spi)
 	if (rc)
 		goto err_hw_init;
 
-	rc = devm_request_irq(&spi->dev, spi->irq, irq_handler, IRQF_SHARED,
-			      dev_name(&spi->dev), lp);
+	/* Read irq status register to reset irq line */
+	rc = at86rf230_read_subreg(lp, RG_IRQ_STATUS, 0xff, 0, &status);
 	if (rc)
 		goto err_hw_init;
 
-	/* Read irq status register to reset irq line */
-	rc = at86rf230_read_subreg(lp, RG_IRQ_STATUS, 0xff, 0, &status);
+	rc = devm_request_irq(&spi->dev, spi->irq, irq_handler, IRQF_SHARED,
+			      dev_name(&spi->dev), lp);
 	if (rc)
 		goto err_hw_init;