Commit 6bb7cac8 authored by Hartmut Knaack's avatar Hartmut Knaack Committed by Jonathan Cameron
Browse files

tools:iio:generic_buffer: add error handling 



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

Signed-off-by: default avatarHartmut Knaack <knaack.h@gmx.de>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent c8ce9903

tools/iio/generic_buffer.c

+14 −4
Original line number Diff line number Diff line
@@ -347,7 +347,14 @@ int main(int argc, char **argv) 
				.events = POLLIN,

			};



			poll(&pfd, 1, -1);

			ret = poll(&pfd, 1, -1);

			if (ret < 0) {

				ret = -errno;

				goto error_close_buffer_access;

			} else if (ret == 0) {

				continue;

			}



			toread = buf_len;



		} else {
@@ -378,11 +385,14 @@ int main(int argc, char **argv) 


	if (!notrigger)

		/* Disconnect the trigger - just write a dummy name. */

		write_sysfs_string("trigger/current_trigger",

		ret = write_sysfs_string("trigger/current_trigger",

					 dev_dir_name, "NULL");

		if (ret < 0)

			printf("Failed to write to %s\n", dev_dir_name);



error_close_buffer_access:

	close(fp);

	if (close(fp) == -1)

		perror("Failed to close buffer");

error_free_buffer_access:

	free(buffer_access);

error_free_data: