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| author | Jonathan Cameron <jic23@kernel.org> | 2012-08-27 18:40:04 +0100 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2012-08-27 18:58:36 +0100 |
| commit | 08ce9b44b53c580987b6a63df4e2206e45e20b92 (patch) | |
| tree | 62e59a11a0048b3f26af6c616f7ab931aed97734 /drivers | |
| parent | c559afbfb08c7eac215ba417251225d3a8e01062 (diff) | |
| download | linux-08ce9b44b53c580987b6a63df4e2206e45e20b92.tar.bz2 | |
iio:kfifo_buf improve error handling in read_first_n.
These two elements were originally in the patch
iio:kfifo_buf Take advantage of the fixed record size used in IIO
but Lars-Peter Clausen pointed out they should not have been
so here they are.
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Tested-by: Lars-Peter Clausen <lars@metafoo.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/iio/kfifo_buf.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/iio/kfifo_buf.c b/drivers/iio/kfifo_buf.c index 8a6d28ce21b2..6ec763f1202a 100644 --- a/drivers/iio/kfifo_buf.c +++ b/drivers/iio/kfifo_buf.c @@ -108,10 +108,12 @@ static int iio_read_first_n_kfifo(struct iio_buffer *r, int ret, copied; struct iio_kfifo *kf = iio_to_kfifo(r); - if (n < r->bytes_per_datum) + if (n < r->bytes_per_datum || r->bytes_per_datum == 0) return -EINVAL; ret = kfifo_to_user(&kf->kf, buf, n, &copied); + if (ret < 0) + return ret; return copied; } |