Use the new cleanup magic to replace of_node_put() with __free(device_node) marking to auto release when they get out of scope. Suggested-by: Julia Lawall <julia.lawall@xxxxxxxx> Signed-off-by: R Sundar <prosunofficial@xxxxxxxxx> --- Changes since v1 - Nitpick, If function is successful, then it will always return 0 at the end of function. so changed to return value as zero as it reached end of function. Link to v1 - https://lore.kernel.org/all/20240429171543.13032-1-prosunofficial@xxxxxxxxx/ drivers/media/platform/cadence/cdns-csi2tx.c | 21 ++++++++------------ 1 file changed, 8 insertions(+), 13 deletions(-) diff --git a/drivers/media/platform/cadence/cdns-csi2tx.c b/drivers/media/platform/cadence/cdns-csi2tx.c index 3d98f91f1bee..1a56bbaeaecb 100644 --- a/drivers/media/platform/cadence/cdns-csi2tx.c +++ b/drivers/media/platform/cadence/cdns-csi2tx.c @@ -496,49 +496,44 @@ static int csi2tx_get_resources(struct csi2tx_priv *csi2tx, static int csi2tx_check_lanes(struct csi2tx_priv *csi2tx) { struct v4l2_fwnode_endpoint v4l2_ep = { .bus_type = 0 }; - struct device_node *ep; int ret, i; - - ep = of_graph_get_endpoint_by_regs(csi2tx->dev->of_node, 0, 0); + struct device_node *ep __free(device_node) = + of_graph_get_endpoint_by_regs(csi2tx->dev->of_node, 0, 0); + if (!ep) return -EINVAL; ret = v4l2_fwnode_endpoint_parse(of_fwnode_handle(ep), &v4l2_ep); if (ret) { dev_err(csi2tx->dev, "Could not parse v4l2 endpoint\n"); - goto out; + return ret; } if (v4l2_ep.bus_type != V4L2_MBUS_CSI2_DPHY) { dev_err(csi2tx->dev, "Unsupported media bus type: 0x%x\n", v4l2_ep.bus_type); - ret = -EINVAL; - goto out; + return -EINVAL; } csi2tx->num_lanes = v4l2_ep.bus.mipi_csi2.num_data_lanes; if (csi2tx->num_lanes > csi2tx->max_lanes) { dev_err(csi2tx->dev, "Current configuration uses more lanes than supported\n"); - ret = -EINVAL; - goto out; + return -EINVAL; } for (i = 0; i < csi2tx->num_lanes; i++) { if (v4l2_ep.bus.mipi_csi2.data_lanes[i] < 1) { dev_err(csi2tx->dev, "Invalid lane[%d] number: %u\n", i, v4l2_ep.bus.mipi_csi2.data_lanes[i]); - ret = -EINVAL; - goto out; + return -EINVAL; } } memcpy(csi2tx->lanes, v4l2_ep.bus.mipi_csi2.data_lanes, sizeof(csi2tx->lanes)); -out: - of_node_put(ep); - return ret; + return 0; } static const struct csi2tx_vops csi2tx_vops = { -- 2.34.1
