6.1-stable review patch. If anyone has any objections, please let me know.
------------------
From: Kunwu Chan <chentao@xxxxxxxxxx>
[ Upstream commit 3494a594315b56516988afb6854d75dee5b501db ]
devm_hwmon_device_register_with_groups() returns an error pointer upon
failure. Check its return value for errors.
Compile-tested only.
Fixes: 1a218d312e65 ("platform/mellanox: mlxbf-pmc: Add Mellanox BlueField PMC driver")
Suggested-by: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx>
Suggested-by: Vadim Pasternak <vadimp@xxxxxxxxxx>
Signed-off-by: Kunwu Chan <chentao@xxxxxxxxxx>
Reviewed-by: Vadim Pasternak <vadimp@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20231201055447.2356001-1-chentao@xxxxxxxxxx
[ij: split the change into two]
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/platform/mellanox/mlxbf-pmc.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/platform/mellanox/mlxbf-pmc.c b/drivers/platform/mellanox/mlxbf-pmc.c
index 925bfc4aef8ce..db7a1d360cd2c 100644
--- a/drivers/platform/mellanox/mlxbf-pmc.c
+++ b/drivers/platform/mellanox/mlxbf-pmc.c
@@ -1454,6 +1454,8 @@ static int mlxbf_pmc_probe(struct platform_device *pdev)
pmc->hwmon_dev = devm_hwmon_device_register_with_groups(
dev, "bfperf", pmc, pmc->groups);
+ if (IS_ERR(pmc->hwmon_dev))
+ return PTR_ERR(pmc->hwmon_dev);
platform_set_drvdata(pdev, pmc);
return 0;
--
2.42.0
