diff options
| author | Sakari Ailus <sakari.ailus@linux.intel.com> | 2017-08-14 06:15:21 -0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2017-08-26 13:45:35 -0400 |
| commit | b24f021579c5384ea9ba22decec84e757d5fbd09 (patch) | |
| tree | b67008e92ec83399d717ad6c5d972084eb675f72 /drivers | |
| parent | f758eb2363ecf91adf17dbd1864691819dd3c060 (diff) | |
media: v4l: fwnode: Fix lane-polarities property parsing
fwnode_property_read_u32_array() only returns the number of array elements
if the array argument is NULL. The assumption that it always did so lead to
lane-polarities properties never being read.
Fixes: 4ee236219f6d ("media: v4l2-fwnode: suppress a warning at OF parsing logic")
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-fwnode.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/media/v4l2-core/v4l2-fwnode.c b/drivers/media/v4l2-core/v4l2-fwnode.c index 5cd2687310fe..3f8eed008700 100644 --- a/drivers/media/v4l2-core/v4l2-fwnode.c +++ b/drivers/media/v4l2-core/v4l2-fwnode.c @@ -65,19 +65,23 @@ static int v4l2_fwnode_endpoint_parse_csi2_bus(struct fwnode_handle *fwnode, } rval = fwnode_property_read_u32_array(fwnode, - "lane-polarities", array, - 1 + bus->num_data_lanes); + "lane-polarities", NULL, + 0); if (rval > 0) { - if (rval != 1 + bus->num_data_lanes /* clock + data */) { + if (rval != 1 + bus->num_data_lanes /* clock+data */) { pr_warn("invalid number of lane-polarities entries (need %u, got %u)\n", 1 + bus->num_data_lanes, rval); return -EINVAL; } + fwnode_property_read_u32_array(fwnode, + "lane-polarities", array, + 1 + bus->num_data_lanes); for (i = 0; i < 1 + bus->num_data_lanes; i++) bus->lane_polarities[i] = array[i]; } + } if (!fwnode_property_read_u32(fwnode, "clock-lanes", &v)) { |