From: Andy Whitcroft <apw@canonical.com>
Date: Fri, 25 Nov 2011 10:56:22 +0000 (+0000)
Subject: iio: iio_event_getfd -- fix ev_int build failure
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=aaa0b4f00729d5530b7d983930e60255574b347b;p=~shefty%2Frdma-dev.git

iio: iio_event_getfd -- fix ev_int build failure

Fix build failure in staging iio driver:

.../drivers/staging/iio/industrialio-core.c: In function 'iio_event_getfd':
.../drivers/staging/iio/industrialio-core.c:262:32: error:
			'ev_int' undeclared (first use in this function)

Also convert the rest of the function to use the new variable.

Signed-off-by: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/drivers/staging/iio/industrialio-core.c b/drivers/staging/iio/industrialio-core.c
index 26564094e33..aec9311b108 100644
--- a/drivers/staging/iio/industrialio-core.c
+++ b/drivers/staging/iio/industrialio-core.c
@@ -242,25 +242,24 @@ static const struct file_operations iio_event_chrdev_fileops = {
 
 static int iio_event_getfd(struct iio_dev *indio_dev)
 {
+	struct iio_event_interface *ev_int = indio_dev->event_interface;
 	int fd;
 
-	if (indio_dev->event_interface == NULL)
+	if (ev_int == NULL)
 		return -ENODEV;
 
-	mutex_lock(&indio_dev->event_interface->event_list_lock);
-	if (test_and_set_bit(IIO_BUSY_BIT_POS,
-			     &indio_dev->event_interface->flags)) {
-		mutex_unlock(&indio_dev->event_interface->event_list_lock);
+	mutex_lock(&ev_int->event_list_lock);
+	if (test_and_set_bit(IIO_BUSY_BIT_POS, &ev_int->flags)) {
+		mutex_unlock(&ev_int->event_list_lock);
 		return -EBUSY;
 	}
-	mutex_unlock(&indio_dev->event_interface->event_list_lock);
+	mutex_unlock(&ev_int->event_list_lock);
 	fd = anon_inode_getfd("iio:event",
-				&iio_event_chrdev_fileops,
-				indio_dev->event_interface, O_RDONLY);
+				&iio_event_chrdev_fileops, ev_int, O_RDONLY);
 	if (fd < 0) {
-		mutex_lock(&indio_dev->event_interface->event_list_lock);
+		mutex_lock(&ev_int->event_list_lock);
 		clear_bit(IIO_BUSY_BIT_POS, &ev_int->flags);
-		mutex_unlock(&indio_dev->event_interface->event_list_lock);
+		mutex_unlock(&ev_int->event_list_lock);
 	}
 	return fd;
 }