Hi Sakari,
Thanks for your patch.
On 2017-06-29 10:30:09 +0300, Sakari Ailus wrote:
> v4l2_fwnode_endpoint_alloc_parse() is intended as a replacement for
> v4l2_fwnode_endpoint_parse(). It parses the "link-frequency" property and
> if the property isn't found, it returns an error. However,
> "link-frequency" is an optional property and if it does not exist is not
> an error. Instead, the number of link frequencies is simply zero in that
> case.
>
> Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>
> ---
> drivers/media/v4l2-core/v4l2-fwnode.c | 30 +++++++++++++++---------------
> 1 file changed, 15 insertions(+), 15 deletions(-)
>
> diff --git a/drivers/media/v4l2-core/v4l2-fwnode.c b/drivers/media/v4l2-core/v4l2-fwnode.c
> index 153c53c..0ec6c14 100644
> --- a/drivers/media/v4l2-core/v4l2-fwnode.c
> +++ b/drivers/media/v4l2-core/v4l2-fwnode.c
> @@ -247,23 +247,23 @@ struct v4l2_fwnode_endpoint *v4l2_fwnode_endpoint_alloc_parse(
>
> rval = fwnode_property_read_u64_array(fwnode, "link-frequencies",
> NULL, 0);
> - if (rval < 0)
> - goto out_err;
> -
> - vep->link_frequencies =
> - kmalloc_array(rval, sizeof(*vep->link_frequencies), GFP_KERNEL);
> - if (!vep->link_frequencies) {
> - rval = -ENOMEM;
> - goto out_err;
> - }
> + if (rval > 0) {
> + vep->link_frequencies =
> + kmalloc_array(rval, sizeof(*vep->link_frequencies),
> + GFP_KERNEL);
> + if (!vep->link_frequencies) {
> + rval = -ENOMEM;
> + goto out_err;
> + }
>
> - vep->nr_of_link_frequencies = rval;
> + vep->nr_of_link_frequencies = rval;
>
> - rval = fwnode_property_read_u64_array(fwnode, "link-frequencies",
> - vep->link_frequencies,
> - vep->nr_of_link_frequencies);
> - if (rval < 0)
> - goto out_err;
> + rval = fwnode_property_read_u64_array(
> + fwnode, "link-frequencies", vep->link_frequencies,
> + vep->nr_of_link_frequencies);
> + if (rval < 0)
> + goto out_err;
> + }
>
> return vep;
>
> --
> 2.1.4
>
>
--
Regards,
Niklas Söderlund
