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@xxxxxx>
---
tools/iio/iio_event_monitor.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
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 @@ int main(int argc, char **argv)
}
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) {
--
2.3.6
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