linux-kernel - Re: [PATCH 2/5] staging: rtl8723bs: replace FIELD

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Message-ID: <4d7139b4-1f06-4efa-b930-5955dd3c78f4@gmail.com>
Date: Mon, 24 Nov 2025 18:37:12 +0530
From: Navaneeth K <knavaneeth786@...il.com>
To: david laight <david.laight@...box.com>,
 Dan Carpenter <dan.carpenter@...aro.org>
Cc: gregkh@...uxfoundation.org, linux-staging@...ts.linux.dev,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/5] staging: rtl8723bs: replace FIELD_OFFSET usage with
 offsetof

Hi Dan, Hi David,

Thanks for the clarification.

I’ll remove the unused macro entirely in v2 instead of adjusting the cast.

Regards,
Navaneeth K

On 24-11-2025 17:43, david laight wrote:
> On Mon, 24 Nov 2025 12:45:46 +0300
> Dan Carpenter <dan.carpenter@...aro.org> wrote:
>
>> On Mon, Nov 24, 2025 at 09:17:54AM +0000, david laight wrote:
>>> On Mon, 24 Nov 2025 11:08:35 +0300
>>> Dan Carpenter <dan.carpenter@...aro.org> wrote:
>>>    
>>>> On Sat, Nov 22, 2025 at 05:45:52PM +0000, Navaneeth K wrote:
>>>>> Replace usage of the custom FIELD_OFFSET macro with the standard
>>>>> offsetof() macro in drv_types.h. This improves code readability and
>>>>> standardization.
>>>>>
>>>>> Signed-off-by: Navaneeth K <knavaneeth786@...il.com>
>>>>> ---
>>>>>   drivers/staging/rtl8723bs/include/drv_types.h | 4 ++--
>>>>>   1 file changed, 2 insertions(+), 2 deletions(-)
>>>>>
>>>>> diff --git a/drivers/staging/rtl8723bs/include/drv_types.h b/drivers/staging/rtl8723bs/include/drv_types.h
>>>>> index dd9018aa4ee5..47cabf8707f6 100644
>>>>> --- a/drivers/staging/rtl8723bs/include/drv_types.h
>>>>> +++ b/drivers/staging/rtl8723bs/include/drv_types.h
>>>>> @@ -173,9 +173,9 @@ struct registry_priv {
>>>>>   
>>>>>   
>>>>>   /* For registry parameters */
>>>>> -#define RGTRY_OFT(field) ((u32)FIELD_OFFSET(struct registry_priv, field))
>>>>> +#define RGTRY_OFT(field) ((u32)offsetof(struct registry_priv, field))
>>>> These casts to u32 are bogus garbage.  Delete them.
>>> Dunno - they might be needed (or have been needed) to stop min()
>>> complaining about type mismatch.
>>> They can also stop expressions being evaluated as 64bit (on 64bit)
>>> which may reduce code size.
>>> But that is a bit subtle...
>> Actually the macros are unused.  Just delete them entirely.
> Sounds good to me :-)
>
>> regards,
>> dan carpenter
>>