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| author | Peter Meerwald <pmeerw@pmeerw.net> | 2014-12-06 06:00:00 +0000 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2014-06-14 16:09:24 +0100 |
| commit | 97b603a4e96565c3a3b09b9a4131d4107b0c6581 (patch) | |
| tree | 9a5998d695b4671500826e2c21f9d1780fa5d965 | |
| parent | 723db167246ae60999699916a1563887e3adb535 (diff) | |
staging:iio: Fix error handling in generic_buffer example
read() does not return -EAGAIN
read() returns -1 and the errno value needs to be checked for -EAGAIN
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| -rw-r--r-- | drivers/staging/iio/Documentation/generic_buffer.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/staging/iio/Documentation/generic_buffer.c b/drivers/staging/iio/Documentation/generic_buffer.c index 40d0ecac047f..044ea196aa6f 100644 --- a/drivers/staging/iio/Documentation/generic_buffer.c +++ b/drivers/staging/iio/Documentation/generic_buffer.c @@ -305,9 +305,12 @@ int main(int argc, char **argv) read_size = read(fp, data, toread*scan_size); - if (read_size == -EAGAIN) { - printf("nothing available\n"); - continue; + if (read_size < 0) { + if (errno == -EAGAIN) { + printf("nothing available\n"); + continue; + } else + break; } for (i = 0; i < read_size/scan_size; i++) process_scan(data + scan_size*i, |