From: Yang Yingliang <yangyingliang@xxxxxxxxxx> [ Upstream commit d0e51022a025ca5350fafb8e413a6fe5d4baf833 ] If platform_device_add() fails, it no need to call platform_device_del(), split platform_device_unregister() into platform_device_del/put(), so platform_device_put() can be called separately. Fixes: 8808a793f052 ("ibmaem: new driver for power/energy/temp meters in IBM System X hardware") Reported-by: Hulk Robot <hulkci@xxxxxxxxxx> Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx> Link: https://lore.kernel.org/r/20220701074153.4021556-1-yangyingliang@xxxxxxxxxx Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/hwmon/ibmaem.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) --- a/drivers/hwmon/ibmaem.c +++ b/drivers/hwmon/ibmaem.c @@ -563,7 +563,7 @@ static int aem_init_aem1_inst(struct aem res = platform_device_add(data->pdev); if (res) - goto ipmi_err; + goto dev_add_err; platform_set_drvdata(data->pdev, data); @@ -611,7 +611,9 @@ hwmon_reg_err: ipmi_destroy_user(data->ipmi.user); ipmi_err: platform_set_drvdata(data->pdev, NULL); - platform_device_unregister(data->pdev); + platform_device_del(data->pdev); +dev_add_err: + platform_device_put(data->pdev); dev_err: ida_simple_remove(&aem_ida, data->id); id_err: @@ -703,7 +705,7 @@ static int aem_init_aem2_inst(struct aem res = platform_device_add(data->pdev); if (res) - goto ipmi_err; + goto dev_add_err; platform_set_drvdata(data->pdev, data); @@ -751,7 +753,9 @@ hwmon_reg_err: ipmi_destroy_user(data->ipmi.user); ipmi_err: platform_set_drvdata(data->pdev, NULL); - platform_device_unregister(data->pdev); + platform_device_del(data->pdev); +dev_add_err: + platform_device_put(data->pdev); dev_err: ida_simple_remove(&aem_ida, data->id); id_err: