tools:iio:iio_event_monitor: save right errno
Move up error handling code to preserve the errno coming from ioctl(),
before it may be changed by close().
Signed-off-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
diff --git a/tools/iio/iio_event_monitor.c b/tools/iio/iio_event_monitor.c
index f6fdab4..578390d 100644
--- a/tools/iio/iio_event_monitor.c
+++ b/tools/iio/iio_event_monitor.c
@@ -275,15 +275,17 @@
}
ret = ioctl(fd, IIO_GET_EVENT_FD_IOCTL, &event_fd);
-
- close(fd);
-
if (ret == -1 || event_fd == -1) {
ret = -errno;
fprintf(stdout, "Failed to retrieve event fd\n");
+ if (close(fd) == -1)
+ perror("Failed to close character device file");
+
goto error_free_chrdev_name;
}
+ close(fd);
+
while (true) {
ret = read(event_fd, &event, sizeof(event));
if (ret == -1) {