[PATCH v2 2/2] tools: iio: print error message when buffer enable fails

[Irina Tirdea <irina.tirdea@intel.com>]

Running generic_buffer without enabling any channel of the
sensor will fail without printing any error message.

Add an error message that indicates buffer enable failed.

Signed-off-by: Irina Tirdea <irina.tirdea@intel.com>
---
 tools/iio/generic_buffer.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/tools/iio/generic_buffer.c b/tools/iio/generic_buffer.c
index 32f389eb..9f7b85b 100644
--- a/tools/iio/generic_buffer.c
+++ b/tools/iio/generic_buffer.c
@@ -364,8 +364,11 @@ int main(int argc, char **argv)
 
 	/* Enable the buffer */
 	ret = write_sysfs_int("enable", buf_dir_name, 1);
-	if (ret < 0)
+	if (ret < 0) {
+		fprintf(stderr,
+			"Failed to enable buffer: %s\n", strerror(-ret));
 		goto error_free_buf_dir_name;
+	}
 
 	scan_size = size_from_channelarray(channels, num_channels);
 	data = malloc(scan_size * buf_len);
-- 
1.9.1