On 30/04/24 22:53, Julia Lawall wrote:
On Tue, 30 Apr 2024, R Sundar wrote:
On 30/04/24 00:10, Christophe JAILLET wrote:
Le 29/04/2024 à 19:15, R Sundar a écrit :
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>
---
drivers/media/platform/cadence/cdns-csi2tx.c | 19 +++++++------------
1 file changed, 7 insertions(+), 12 deletions(-)
diff --git a/drivers/media/platform/cadence/cdns-csi2tx.c
b/drivers/media/platform/cadence/cdns-csi2tx.c
index 3d98f91f1bee..88aed2f299fd 100644
--- a/drivers/media/platform/cadence/cdns-csi2tx.c
+++ b/drivers/media/platform/cadence/cdns-csi2tx.c
@@ -496,48 +496,43 @@ 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;
Hi,
Nit: return 0; ?
CJ
}
Hi,
In success case, ret variable value also will be zero, else for non-zero ret
value it will return from v4l2_fwnode_endpoint_parse()'s error case handling
block.
Indeed, but it seems that the return ret at the end of the function always
returns 0? If that is the case, return 0 would be better, as one can see
that that code is only reached in the success case.
julia
Hi Julia,
Noted.
@CJ, Thanks for comments. Understood the point of Nit.
Will update the changes.
Thanks,
Sundar
