From 216f21bc46c3321c74bcfa5e1381624ab888bd80 Mon Sep 17 00:00:00 2001
From: Marc Zyngier <maz@misterjones.org>
Date: Tue, 27 Apr 2010 13:13:07 -0700
Subject: [PATCH] --- yaml --- r: 190317 b: refs/heads/master c:
 a2cb9aeb3c9b2475955cec328487484034f414e4 h: refs/heads/master i:   190315:
 927070814a1573473523e50b96603593fd2b2698 v: v3

---
 [refs]                       |  2 +-
 trunk/drivers/gpio/pca953x.c | 14 +++++++++++++-
 2 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/[refs] b/[refs]
index a884696c5e60..34258f45f684 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 3835541dd481091c4dbf5ef83c08aed12e50fd61
+refs/heads/master: a2cb9aeb3c9b2475955cec328487484034f414e4
diff --git a/trunk/drivers/gpio/pca953x.c b/trunk/drivers/gpio/pca953x.c
index 7d521e1d17e1..b827c976dc62 100644
--- a/trunk/drivers/gpio/pca953x.c
+++ b/trunk/drivers/gpio/pca953x.c
@@ -252,6 +252,18 @@ static void pca953x_irq_bus_lock(unsigned int irq)
 static void pca953x_irq_bus_sync_unlock(unsigned int irq)
 {
 	struct pca953x_chip *chip = get_irq_chip_data(irq);
+	uint16_t new_irqs;
+	uint16_t level;
+
+	/* Look for any newly setup interrupt */
+	new_irqs = chip->irq_trig_fall | chip->irq_trig_raise;
+	new_irqs &= ~chip->reg_direction;
+
+	while (new_irqs) {
+		level = __ffs(new_irqs);
+		pca953x_gpio_direction_input(&chip->gpio_chip, level);
+		new_irqs &= ~(1 << level);
+	}
 
 	mutex_unlock(&chip->irq_lock);
 }
@@ -278,7 +290,7 @@ static int pca953x_irq_set_type(unsigned int irq, unsigned int type)
 	else
 		chip->irq_trig_raise &= ~mask;
 
-	return pca953x_gpio_direction_input(&chip->gpio_chip, level);
+	return 0;
 }
 
 static struct irq_chip pca953x_irq_chip = {