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media: v4l: fwnode: Only assign configuration if there is no error 

Only assign endpoint configuration if the endpoint is parsed successfully.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Tested-by: Steve Longerbeam <steve_longerbeam@mentor.com>
Tested-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Sakari Ailus 2018-07-03 07:06:20 -04:00 committed by Mauro Carvalho Chehab
parent 276565ed7e
commit af11a74a04
1 changed files with 18 additions and 12 deletions
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30
drivers/media/v4l2-core/v4l2-fwnode.c
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@ -47,7 +47,7 @@ static int v4l2_fwnode_endpoint_parse_csi2_bus(struct fwnode_handle *fwnode,
enum v4l2_fwnode_bus_type bus_type)
{
struct v4l2_fwnode_bus_mipi_csi2 *bus = &vep->bus.mipi_csi2;
bool have_clk_lane = false;
bool have_clk_lane = false, have_lane_polarities = false;
unsigned int flags = 0, lanes_used = 0;
u32 array[1 + V4L2_FWNODE_CSI2_MAX_DATA_LANES];
unsigned int num_data_lanes = 0;
@ -73,7 +73,6 @@ static int v4l2_fwnode_endpoint_parse_csi2_bus(struct fwnode_handle *fwnode,
array[i]);
lanes_used |= BIT(array[i]);
bus->data_lanes[i] = array[i];
pr_debug("lane %u position %u\n", i, array[i]);
}
}
@ -87,16 +86,7 @@ static int v4l2_fwnode_endpoint_parse_csi2_bus(struct fwnode_handle *fwnode,
return -EINVAL;
}
fwnode_property_read_u32_array(fwnode, "lane-polarities", array,
1 + num_data_lanes);
for (i = 0; i < 1 + num_data_lanes; i++) {
bus->lane_polarities[i] = array[i];
pr_debug("lane %u polarity %sinverted",
i, array[i] ? "" : "not ");
}
} else {
pr_debug("no lane polarities defined, assuming not inverted\n");
have_lane_polarities = true;
}
if (!fwnode_property_read_u32(fwnode, "clock-lanes", &v)) {
@ -121,6 +111,22 @@ static int v4l2_fwnode_endpoint_parse_csi2_bus(struct fwnode_handle *fwnode,
bus->flags = flags;
vep->bus_type = V4L2_MBUS_CSI2_DPHY;
bus->num_data_lanes = num_data_lanes;
for (i = 0; i < num_data_lanes; i++)
bus->data_lanes[i] = array[i];
if (have_lane_polarities) {
fwnode_property_read_u32_array(fwnode,
"lane-polarities", array,
1 + num_data_lanes);
for (i = 0; i < 1 + num_data_lanes; i++) {
bus->lane_polarities[i] = array[i];
pr_debug("lane %u polarity %sinverted",
i, array[i] ? "" : "not ");
}
} else {
pr_debug("no lane polarities defined, assuming not inverted\n");
}
}
return 0;