Commit 672f93b6 authored Aug 11, 2015 by Linus Walleij Committed by Jonathan Cameron Aug 16, 2015

iio: event_monitor: report unsupported events



This makes the event monitor bail out with a helpful error
message if a device does not support events, as a related
fix to iio core now makes it return -ENODEV properly.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

parent a0175b9c

tools/iio/iio_event_monitor.c

+5 −1

Original line number	Diff line number	Diff line
		@@ -284,6 +284,10 @@ int main(int argc, char **argv)
		ret = ioctl(fd, IIO_GET_EVENT_FD_IOCTL, &event_fd);
		if (ret == -1 \|\| event_fd == -1) {
		ret = -errno;
		if (ret == -ENODEV)
		fprintf(stderr,
		"This device does not support events\n");
		else
		fprintf(stderr, "Failed to retrieve event fd\n");
		if (close(fd) == -1)
		perror("Failed to close character device file");