[PATCH v4 4/4] platform/x86: fujitsu-laptop: cleanup error labels in fujitsu_init()

From: MichaÅ KÄpieÅ
Date: Fri Mar 10 2017 - 05:51:18 EST


Error labels currently used in fujitsu_init() are really hard to follow:
some (fail_laptop) indicate which operation has failed, others
(fail_sysfs_group) indicate where unrolling should start and the rest
(fail_platform_driver) is simply confusing. Change them to follow the
pattern used throughout the rest of the module, i.e. make every label
indicate the first unrolling operation it leads to.

Signed-off-by: MichaÅ KÄpieÅ <kernel@xxxxxxxxxx>
---
drivers/platform/x86/fujitsu-laptop.c | 28 ++++++++++++++--------------
1 file changed, 14 insertions(+), 14 deletions(-)

diff --git a/drivers/platform/x86/fujitsu-laptop.c b/drivers/platform/x86/fujitsu-laptop.c
index dad7b448f2cd..75d5f758af59 100644
--- a/drivers/platform/x86/fujitsu-laptop.c
+++ b/drivers/platform/x86/fujitsu-laptop.c
@@ -1244,60 +1244,60 @@ static int __init fujitsu_init(void)

ret = acpi_bus_register_driver(&acpi_fujitsu_bl_driver);
if (ret)
- goto fail_acpi;
+ goto err_free_fujitsu_bl;

/* Register platform stuff */

fujitsu_bl->pf_device = platform_device_alloc("fujitsu-laptop", -1);
if (!fujitsu_bl->pf_device) {
ret = -ENOMEM;
- goto fail_platform_driver;
+ goto err_unregister_acpi;
}

ret = platform_device_add(fujitsu_bl->pf_device);
if (ret)
- goto fail_platform_device1;
+ goto err_put_platform_device;

ret =
sysfs_create_group(&fujitsu_bl->pf_device->dev.kobj,
&fujitsu_pf_attribute_group);
if (ret)
- goto fail_platform_device2;
+ goto err_del_platform_device;

ret = platform_driver_register(&fujitsu_pf_driver);
if (ret)
- goto fail_sysfs_group;
+ goto err_remove_sysfs_group;

/* Register laptop driver */

fujitsu_laptop = kzalloc(sizeof(struct fujitsu_laptop), GFP_KERNEL);
if (!fujitsu_laptop) {
ret = -ENOMEM;
- goto fail_laptop;
+ goto err_unregister_platform_driver;
}

ret = acpi_bus_register_driver(&acpi_fujitsu_laptop_driver);
if (ret)
- goto fail_laptop1;
+ goto err_free_fujitsu_laptop;

pr_info("driver " FUJITSU_DRIVER_VERSION " successfully loaded\n");

return 0;

-fail_laptop1:
+err_free_fujitsu_laptop:
kfree(fujitsu_laptop);
-fail_laptop:
+err_unregister_platform_driver:
platform_driver_unregister(&fujitsu_pf_driver);
-fail_sysfs_group:
+err_remove_sysfs_group:
sysfs_remove_group(&fujitsu_bl->pf_device->dev.kobj,
&fujitsu_pf_attribute_group);
-fail_platform_device2:
+err_del_platform_device:
platform_device_del(fujitsu_bl->pf_device);
-fail_platform_device1:
+err_put_platform_device:
platform_device_put(fujitsu_bl->pf_device);
-fail_platform_driver:
+err_unregister_acpi:
acpi_bus_unregister_driver(&acpi_fujitsu_bl_driver);
-fail_acpi:
+err_free_fujitsu_bl:
kfree(fujitsu_bl);

return ret;
--
2.12.0