[ Upstream commit 9d3863736a267068a0ae67c6695af8770ef330b7 ]
The lack of defaults provided by the caller to v4l2_fwnode_endpoint_parse() signals the use of the default lane mapping. The default lane mapping must not be used however if the firmmare contains the lane mapping. Disable the default lane mapping in that case, and improve the debug messages telling of the use of the defaults.
This was missed previously since the default mapping will only unsed in this case if the bus type is set, and no driver did both while still needing the lane mapping configuration.
Fixes: b4357d21d674 ("media: v4l: fwnode: Support default CSI-2 lane mapping for drivers")
Signed-off-by: Sakari Ailus sakari.ailus@linux.intel.com Signed-off-by: Mauro Carvalho Chehab mchehab+samsung@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/media/v4l2-core/v4l2-fwnode.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/media/v4l2-core/v4l2-fwnode.c b/drivers/media/v4l2-core/v4l2-fwnode.c index 7495f8323147..ccefa55813ad 100644 --- a/drivers/media/v4l2-core/v4l2-fwnode.c +++ b/drivers/media/v4l2-core/v4l2-fwnode.c @@ -163,7 +163,7 @@ static int v4l2_fwnode_endpoint_parse_csi2_bus(struct fwnode_handle *fwnode, }
if (use_default_lane_mapping) - pr_debug("using default lane mapping\n"); + pr_debug("no lane mapping given, using defaults\n"); }
rval = fwnode_property_read_u32_array(fwnode, "data-lanes", NULL, 0); @@ -175,6 +175,10 @@ static int v4l2_fwnode_endpoint_parse_csi2_bus(struct fwnode_handle *fwnode, num_data_lanes);
have_data_lanes = true; + if (use_default_lane_mapping) { + pr_debug("data-lanes property exists; disabling default mapping\n"); + use_default_lane_mapping = false; + } }
for (i = 0; i < num_data_lanes; i++) {