[PATCH v3 5/7] staging: pi433: Remove duplicated code using the "goto" error recovery scheme.

Shahar Avidar
2024-04-05T07:40:17Z

pi433_init had "unregister_chrdev" called twice.
Remove it using goto statements.

Signed-off-by: Shahar Avidar <ikobh7@gmail.com>
---
v2->v1:
Followed by Dan Carpenter's <dan.carpenter@linaro.org> comments:
- Remove empty "fail" goto tag.
- Reorder pi433 init & exit calls so they have reverse order.
- Add "unreg_spi_drv" goto tag.
- Check "debugfs_create_dir" return value.
- Update "if" statments for consistency.
v2->v3:
- Undo pi433 init & exit calls reordering. Reorder exit calls in
a seperate patch.
- Remove "unreg_spi_drv" tag.
- Undo return value checking for "debugfs_create_dir".
- Undo "if" statements update.

drivers/staging/pi433/pi433_if.c | 20 ++++++++++----------
1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/drivers/staging/pi433/pi433_if.c b/drivers/staging/pi433/pi433_if.c
index 62ce75b07bf0..b01ee145ff3c 100644
--- a/drivers/staging/pi433/pi433_if.c
+++ b/drivers/staging/pi433/pi433_if.c
@@ -1403,21 +1403,21 @@ static int __init pi433_init(void)
return status;

status = class_register(&pi433_class);
- if (status) {
- unregister_chrdev(MAJOR(pi433_devt),
- pi433_spi_driver.driver.name);
- return status;
- }
+ if (status)
+ goto unreg_chrdev;

root_dir = debugfs_create_dir(KBUILD_MODNAME, NULL);

status = spi_register_driver(&pi433_spi_driver);
- if (status < 0) {
- class_unregister(&pi433_class);
- unregister_chrdev(MAJOR(pi433_devt),
- pi433_spi_driver.driver.name);
- }
+ if (status < 0)
+ goto unreg_class_and_remove_dbfs;

+ return 0;
+
+unreg_class_and_remove_dbfs:
+ class_unregister(&pi433_class);
+unreg_chrdev:
+ unregister_chrdev(MAJOR(pi433_devt), pi433_spi_driver.driver.name);
return status;
}

--
2.34.1