linux-kernel - Re: [PATCH v2 5/6] staging: pi433: Remove duplicated code using the "goto" error recovery scheme.

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Date: Tue, 2 Apr 2024 19:46:57 +0300
From: Dan Carpenter <dan.carpenter@...aro.org>
To: Shahar Avidar <ikobh7@...il.com>
Cc: gregkh@...uxfoundation.org, hverkuil-cisco@...all.nl,
	andriy.shevchenko@...ux.intel.com, robh@...nel.org,
	felixkimbu1@...il.com, linux-staging@...ts.linux.dev,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 5/6] staging: pi433: Remove duplicated code using the
 "goto" error recovery scheme.

On Tue, Apr 02, 2024 at 02:14:13PM +0300, Shahar Avidar wrote:
> pi433_init had "unregister_chrdev" called twice.
> Remove it using goto statements.
> 
> Signed-off-by: Shahar Avidar <ikobh7@...il.com>

Your commit message needs to mention all the other changes you made,
especially the bug fix.  I feel like you're doing too many changes
really.  Just use the gotos to clean up but don't re-order the calls.

You need to add a Fixes tag.

> ---
> v2->v1:
> Followed by Dan Carpenter's <dan.carpenter@...aro.org> comments:
>         - Remove empty "fail" goto tag.
>         - Reorder pi433 init & exit calls so they have reverse order.

Keep the init calls the same.  Re-order the exit calls.  It's a bit of
a gray area if you can re-order the exit calls in this same patch.  Do
it in a separate patch just to be safe.

>         - Add "unreg_spi_drv" goto tag.
>         - Check "debugfs_create_dir" return value.

No.  This is wrong.  Debugfs function are not supposed to be checked.
https://staticthinking.wordpress.com/2023/07/24/debugfs-functions-are-not-supposed-to-be-checked/

>         - Update "if" statments for consistency.

I like this cleanup, but it's not worth the effort.  Just leave it
as-is unless you really really need to change it.  Do it in a separate
patch.

What qualifies as One Thing Per Patch is a bit of gray area.  Greg tends
to want things split up into tiny patches.  You have to know your
maintainer.

regards,
dan carpenter