linux-kernel - Re: [PATCH v6 01/20] bus: firewall: move stm32

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Message-ID: <19e664da-df4c-4bc0-84ce-41e4364f10bc@gmail.com>
Date: Wed, 10 Sep 2025 09:47:03 +0200
From: Clément Le Goffic <legoffic.clement@...il.com>
To: Gatien CHEVALLIER <gatien.chevallier@...s.st.com>,
 Maxime Coquelin <mcoquelin.stm32@...il.com>,
 Alexandre Torgue <alexandre.torgue@...s.st.com>,
 Michael Turquette <mturquette@...libre.com>, Stephen Boyd
 <sboyd@...nel.org>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Gabriel Fernandez <gabriel.fernandez@...s.st.com>,
 Krzysztof Kozlowski <krzk@...nel.org>, Julius Werner <jwerner@...omium.org>,
 Will Deacon <will@...nel.org>, Mark Rutland <mark.rutland@....com>,
 Philipp Zabel <p.zabel@...gutronix.de>, Jonathan Corbet <corbet@....net>
Cc: linux-stm32@...md-mailman.stormreply.com,
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
 linux-clk@...r.kernel.org, devicetree@...r.kernel.org,
 linux-perf-users@...r.kernel.org, linux-doc@...r.kernel.org,
 Clément Le Goffic <clement.legoffic@...s.st.com>
Subject: Re: [PATCH v6 01/20] bus: firewall: move stm32_firewall header file
 in include folder

On 09/09/2025 14:25, Gatien CHEVALLIER wrote:
> 
> 
> On 9/9/25 12:12, Clément Le Goffic wrote:
>> From: Clément Le Goffic <clement.legoffic@...s.st.com>
>>
>> Other driver than rifsc and etzpc can implement firewall ops, such as
>> rcc.
>> In order for them to have access to the ops and type of this framework,
>> we need to get the `stm32_firewall.h` file in the include/ folder.
>>
>> Signed-off-by: Clément Le Goffic <clement.legoffic@...s.st.com>
>> Signed-off-by: Clément Le Goffic <legoffic.clement@...il.com>
>> ---
>>   drivers/bus/stm32_etzpc.c                       | 3 +--
>>   drivers/bus/stm32_firewall.c                    | 3 +--
>>   drivers/bus/stm32_rifsc.c                       | 3 +--
>>   {drivers => include/linux}/bus/stm32_firewall.h | 0
>>   4 files changed, 3 insertions(+), 6 deletions(-)
>>
>> diff --git a/drivers/bus/stm32_etzpc.c b/drivers/bus/stm32_etzpc.c
>> index 7fc0f16960be..4918a14e507e 100644
>> --- a/drivers/bus/stm32_etzpc.c
>> +++ b/drivers/bus/stm32_etzpc.c
>> @@ -5,6 +5,7 @@
>>   #include <linux/bitfield.h>
>>   #include <linux/bits.h>
>> +#include <linux/bus/stm32_firewall.h>
>>   #include <linux/device.h>
>>   #include <linux/err.h>
>>   #include <linux/init.h>
>> @@ -16,8 +17,6 @@
>>   #include <linux/platform_device.h>
>>   #include <linux/types.h>
>> -#include "stm32_firewall.h"
>> -
>>   /*
>>    * ETZPC registers
>>    */
>> diff --git a/drivers/bus/stm32_firewall.c b/drivers/bus/stm32_firewall.c
>> index 2fc9761dadec..ef4988054b44 100644
>> --- a/drivers/bus/stm32_firewall.c
>> +++ b/drivers/bus/stm32_firewall.c
>> @@ -5,6 +5,7 @@
>>   #include <linux/bitfield.h>
>>   #include <linux/bits.h>
>> +#include <linux/bus/stm32_firewall.h>
>>   #include <linux/bus/stm32_firewall_device.h>
>>   #include <linux/device.h>
>>   #include <linux/err.h>
>> @@ -18,8 +19,6 @@
>>   #include <linux/types.h>
>>   #include <linux/slab.h>
>> -#include "stm32_firewall.h"
>> -
>>   /* Corresponds to STM32_FIREWALL_MAX_EXTRA_ARGS + firewall ID */
>>   #define STM32_FIREWALL_MAX_ARGS        
>> (STM32_FIREWALL_MAX_EXTRA_ARGS + 1)
>> diff --git a/drivers/bus/stm32_rifsc.c b/drivers/bus/stm32_rifsc.c
>> index 4cf1b60014b7..643ddd0a5f54 100644
>> --- a/drivers/bus/stm32_rifsc.c
>> +++ b/drivers/bus/stm32_rifsc.c
>> @@ -5,6 +5,7 @@
>>   #include <linux/bitfield.h>
>>   #include <linux/bits.h>
>> +#include <linux/bus/stm32_firewall.h>
>>   #include <linux/device.h>
>>   #include <linux/err.h>
>>   #include <linux/init.h>
>> @@ -16,8 +17,6 @@
>>   #include <linux/platform_device.h>
>>   #include <linux/types.h>
>> -#include "stm32_firewall.h"
>> -
>>   /*
>>    * RIFSC offset register
>>    */
>> diff --git a/drivers/bus/stm32_firewall.h b/include/linux/bus/ 
>> stm32_firewall.h
>> similarity index 100%
>> rename from drivers/bus/stm32_firewall.h
>> rename to include/linux/bus/stm32_firewall.h
>>

Hi Gatien

> As the firewall header is moved to a dedicated firewall directory,

I don't move it to a dedicated firewall directory just to the "bus" 
directory where the "stm32_firewall_device.h" header file is already 
located.

> maybe it would be coherent to create the same kind of directory
> for the sources as non-buses drivers use it. I can test it on my
> side if you're willing to make the change.

Do you mean create an include/linux/bus/firewall/ directory ?

Best regards,
Clément