From: Hartmut Knaack <knaack.h@gmx.de>
Date: Sun, 31 May 2015 12:40:05 +0000 (+0200)
Subject: tools:iio:iio_event_monitor: add error handling
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=963f54cef23b7e8c91bbe60b978b5f4a3e990f2c;p=openwrt%2Fstaging%2Fblogic.git

tools:iio:iio_event_monitor: add error handling

Add error handling to calls which can indicate a major problem by
returning an error code.

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 1374374208ee..1316527f3c3c 100644
--- a/tools/iio/iio_event_monitor.c
+++ b/tools/iio/iio_event_monitor.c
@@ -286,7 +286,10 @@ int main(int argc, char **argv)
 		goto error_free_chrdev_name;
 	}
 
-	close(fd);
+	if (close(fd) == -1)  {
+		ret = -errno;
+		goto error_free_chrdev_name;
+	}
 
 	while (true) {
 		ret = read(event_fd, &event, sizeof(event));
@@ -304,7 +307,9 @@ int main(int argc, char **argv)
 		print_event(&event);
 	}
 
-	close(event_fd);
+	if (close(event_fd) == -1)
+		perror("Failed to close event file");
+
 error_free_chrdev_name:
 	free(chrdev_name);
 error_ret: