From: Lars-Peter Clausen <lars@metafoo.de>
Date: Sun, 15 Sep 2013 15:31:00 +0000 (+0100)
Subject: iio:kfifo_buf: Use wake_up_interruptible_poll()
X-Git-Tag: next-20130927~23^2~139^2~58
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=623c334c1a40ae84a19ab8ef77924e9f0f2d4bcd;p=karo-tx-linux.git

iio:kfifo_buf: Use wake_up_interruptible_poll()

Use wake_up_interruptible_poll() instead of wake_up_interruptible() to only wake
up those threads that listen for input poll notifications.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
---

diff --git a/drivers/iio/kfifo_buf.c b/drivers/iio/kfifo_buf.c
index a923c78d5cb4..1bea41bcbdc6 100644
--- a/drivers/iio/kfifo_buf.c
+++ b/drivers/iio/kfifo_buf.c
@@ -7,6 +7,7 @@
 #include <linux/mutex.h>
 #include <linux/iio/kfifo_buf.h>
 #include <linux/sched.h>
+#include <linux/poll.h>
 
 struct iio_kfifo {
 	struct iio_buffer buffer;
@@ -102,7 +103,7 @@ static int iio_store_to_kfifo(struct iio_buffer *r,
 	if (ret != 1)
 		return -EBUSY;
 	r->stufftoread = true;
-	wake_up_interruptible(&r->pollq);
+	wake_up_interruptible_poll(&r->pollq, POLLIN | POLLRDNORM);
 
 	return 0;
 }