From: Jean Delvare Subject: hwmon: (ibmaem) Fix error paths I am under the impression that error paths in functions aem_init_aem1_inst() and aem_init_aem2_inst() are incorrect. In several cases, the function returns 0 on error, which I suspect is not intended. Fix this by properly tracking error codes. Signed-off-by: Jean Delvare Acked-by: Darrick J. Wong Acked-by: Guenter Roeck --- drivers/hwmon/ibmaem.c | 20 ++++++++++++-------- 1 file changed, 12 insertions(+), 8 deletions(-) --- linux-3.1-rc2.orig/drivers/hwmon/ibmaem.c 2011-08-18 18:57:17.000000000 +0200 +++ linux-3.1-rc2/drivers/hwmon/ibmaem.c 2011-08-18 19:16:12.000000000 +0200 @@ -602,24 +602,26 @@ static int aem_init_aem1_inst(struct aem platform_set_drvdata(data->pdev, data); /* Set up IPMI interface */ - if (aem_init_ipmi_data(&data->ipmi, probe->interface, - probe->bmc_device)) + res = aem_init_ipmi_data(&data->ipmi, probe->interface, + probe->bmc_device); + if (res) goto ipmi_err; /* Register with hwmon */ data->hwmon_dev = hwmon_device_register(&data->pdev->dev); - if (IS_ERR(data->hwmon_dev)) { dev_err(&data->pdev->dev, "Unable to register hwmon " "device for IPMI interface %d\n", probe->interface); + res = PTR_ERR(data->hwmon_dev); goto hwmon_reg_err; } data->update = update_aem1_sensors; /* Find sensors */ - if (aem1_find_sensors(data)) + res = aem1_find_sensors(data); + if (res) goto sensor_err; /* Add to our list of AEM devices */ @@ -735,24 +737,26 @@ static int aem_init_aem2_inst(struct aem platform_set_drvdata(data->pdev, data); /* Set up IPMI interface */ - if (aem_init_ipmi_data(&data->ipmi, probe->interface, - probe->bmc_device)) + res = aem_init_ipmi_data(&data->ipmi, probe->interface, + probe->bmc_device); + if (res) goto ipmi_err; /* Register with hwmon */ data->hwmon_dev = hwmon_device_register(&data->pdev->dev); - if (IS_ERR(data->hwmon_dev)) { dev_err(&data->pdev->dev, "Unable to register hwmon " "device for IPMI interface %d\n", probe->interface); + res = PTR_ERR(data->hwmon_dev); goto hwmon_reg_err; } data->update = update_aem2_sensors; /* Find sensors */ - if (aem2_find_sensors(data)) + res = aem2_find_sensors(data); + if (res) goto sensor_err; /* Add to our list of AEM devices */