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From: Daniel Glöckner on 9 Jul 2010 16:00
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(a)emlix.com>
Reported-by: Ian Jeffray <ian(a)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

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Prev: [S+Q2 03/19] percpu: allow limited allocation before slab is online
Next: [PATCH 1/2] gpiolib: get rid of struct poll_desc and worklet