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

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Date: Fri, 5 Apr 2024 10:46:58 +0300
From: Shahar Avidar <ikobh7@...il.com>
To: Dan Carpenter <dan.carpenter@...aro.org>
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 02/04/2024 19:46, Dan Carpenter wrote:
> 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.
Thanks again for your inputs.
I've reverted some of the changes & split the 5th patch.

> 
> You need to add a Fixes tag.
> I've added the "Fixes" tag, so as the "Reported-by" tag, naming you.

>> ---
>> 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 >
Great blog post again. I'm learning.

>>          - 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.
Reverted.

> 
> 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
> 
-- 
Regards,

Shahar