staging:iio:documentation make read_size signed to allow for errors.

Without this all hell breaks loose if you have no data.

Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/staging/iio/Documentation/generic_buffer.c b/drivers/staging/iio/Documentation/generic_buffer.c
index 3cc18ab..eb72e95 100644 (file)
--- a/drivers/staging/iio/Documentation/generic_buffer.c
+++ b/drivers/staging/iio/Documentation/generic_buffer.c
@@ -132,7 +132,7 @@ int main(int argc, char **argv)
 
        int datardytrigger = 1;
        char *data;
-       size_t read_size;
+       ssize_t read_size;
        struct iio_event_data dat;
        int dev_num, trig_num;
        char *buffer_access, *buffer_event;