linux-kernel - [PATCH v4 4/6] GPIO: pca953x.c: Interrupt pin is active-low

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Date:	Wed,  8 Jun 2011 14:48:32 +0200
From:	David Jander <david@...tonic.nl>
To:	Grant Likely <grant.likely@...retlab.ca>
Cc:	Thomas Gleixner <tglx@...utronix.de>, linux-kernel@...r.kernel.org,
	David Jander <david@...tonic.nl>
Subject: [PATCH v4 4/6] GPIO: pca953x.c: Interrupt pin is active-low

The interrupt pin of the PCA953x is active low, and on the rising edge
no interrupt should be produced.

Signed-off-by: David Jander <david@...tonic.nl>
---
 drivers/gpio/pca953x.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)

diff --git a/drivers/gpio/pca953x.c b/drivers/gpio/pca953x.c
index ae9fe61..97e0d32 100644
--- a/drivers/gpio/pca953x.c
+++ b/drivers/gpio/pca953x.c
@@ -496,8 +496,7 @@ static int pca953x_irq_setup(struct pca953x_chip *chip,
 		ret = request_threaded_irq(client->irq,
 					   NULL,
 					   pca953x_irq_handler,
-					   IRQF_TRIGGER_RISING |
-					   IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
+					   IRQF_TRIGGER_LOW | IRQF_ONESHOT,
 					   dev_name(&client->dev), chip);
 		if (ret) {
 			dev_err(&client->dev, "failed to request irq %d\n",
-- 
1.7.4.1

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