[PATCH 2/2] gpiolib: allow nested threaded irqs for poll(2)

["Daniel Glöckner" <dg@emlix.com>]

The pca953x driver requires the use of threaded irqs as its irq
demultiplexer can sleep. Our irq handler can be called from any
context, so use request_any_context_irq to allow threaded irqs
as well.

Signed-off-by: Daniel Glöckner <dg@emlix.com>
Reported-by: Ian Jeffray <ian@jeffray.co.uk>
---
 drivers/gpio/gpiolib.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 67e6136..b4ba1ec 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -385,9 +385,9 @@ static int gpio_setup_irq(struct gpio_desc *desc, struct device *dev,
 		}
 	}
 
-	ret = request_irq(irq, gpio_sysfs_irq, irq_flags,
+	ret = request_any_context_irq(irq, gpio_sysfs_irq, irq_flags,
 				"gpiolib", value_sd);
-	if (ret)
+	if (ret < 0)
 		goto free_id;
 
 	desc->flags |= gpio_flags;
-- 
1.7.1