From c609c05db10dcb020f6869186e548a0596a78896 Mon Sep 17 00:00:00 2001
From: David Jander <david@protonic.nl>
Date: Tue, 14 Jun 2011 11:00:54 +0200
Subject: [PATCH] gpio/pca953x: Fix IRQ support.
It seems that in the normal case, IRQ_NOREQUEST needs to be explicitly
cleared, otherwise claiming the interrupt fails.
In the case of sparse interrupts, the descriptor needs to be allocated
first.
Signed-off-by: David Jander <david@protonic.nl>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
---
drivers/gpio/gpio-pca953x.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c
index 4b8446e98de5..5e4d3f23156a 100644
--- a/drivers/gpio/gpio-pca953x.c
+++ b/drivers/gpio/gpio-pca953x.c
@@ -517,8 +517,10 @@ out_failed:
static void pca953x_irq_teardown(struct pca953x_chip *chip)
{
- if (chip->irq_base != -1)
+ if (chip->irq_base != -1) {
+ irq_free_descs(chip->irq_base, chip->gpio_chip.ngpio);
free_irq(chip->client->irq, chip);
+ }
}
#else /* CONFIG_GPIO_PCA953X_IRQ */
static int pca953x_irq_setup(struct pca953x_chip *chip,
--
GitLab