diff mbox series

[v6,2/9] watchdog: rzg2l_wdt: Make the driver depend on PM

Message ID 20240208105817.2619703-3-claudiu.beznea.uj@bp.renesas.com
State Superseded
Headers show
Series watchdog: rzg2l_wdt: Add support for RZ/G3S | expand

Commit Message

Claudiu Feb. 8, 2024, 10:58 a.m. UTC 
From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

The rzg2l_wdt watchdog driver cannot work w/o CONFIG_PM=y (e.g. the
clocks are enabled though pm_runtime_* specific APIs). To avoid building
a driver that doesn't work make explicit the dependency on CONFIG_PM.

Suggested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v6:
- update patch description
- fixed the dependency on COMPILE_TEST previously introduced

Changes in v5:
- updated patch description
- added on a new line the dependency on PM and COMPILE_TEST

Changes in v4:
- s/ARCH_RENESAS/ARCH_RZG2L || ARCH_R9A09G011 due to patch 1/9

Changes in v3:
- make driver depend on PM; with that the "unmet direct dependency"
  Reported-by: kernel test robot <lkp@intel.com>
  was also fixed
- adapt commit message

Changes in v2:
- this patch is new

 drivers/watchdog/Kconfig | 1 +
 1 file changed, 1 insertion(+)

Comments

Claudiu Feb. 8, 2024, 1:02 p.m. UTC | #1 
Hi, Geert,

On 08.02.2024 14:53, Geert Uytterhoeven wrote:
> Hi Claudiu,
> 
> On Thu, Feb 8, 2024 at 1:26 PM Claudiu <claudiu.beznea@tuxon.dev> wrote:
>> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>>
>> The rzg2l_wdt watchdog driver cannot work w/o CONFIG_PM=y (e.g. the
>> clocks are enabled though pm_runtime_* specific APIs). To avoid building
>> a driver that doesn't work make explicit the dependency on CONFIG_PM.
>>
>> Suggested-by: Guenter Roeck <linux@roeck-us.net>
>> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>> ---
>>
>> Changes in v6:
>> - update patch description
>> - fixed the dependency on COMPILE_TEST previously introduced
> 
> Thanks for the update!
> 
>> --- a/drivers/watchdog/Kconfig
>> +++ b/drivers/watchdog/Kconfig
>> @@ -911,6 +911,7 @@ config RENESAS_RZN1WDT
>>  config RENESAS_RZG2LWDT
>>         tristate "Renesas RZ/G2L WDT Watchdog"
>>         depends on ARCH_RZG2L || ARCH_R9A09G011 || COMPILE_TEST
>> +       depends on PM
> 
> depends on PM || COMPILE_TEST

Isn't "depends on PM" enough? As of [1] ("If multiple dependencies are
defined, they are connected with '&&'") the above:

depends on ARCH_RZG2L || ARCH_R9A09G011 || COMPILE_TEST
depends on PM

are translated into:
depends on (ARCH_RZG2L || ARCH_R9A09G011 || COMPILE_TEST) && PM

Please let me know if I'm wrong.

Thank you,
Claudiu Beznea

[1] https://www.kernel.org/doc/html/next/kbuild/kconfig-language.html

> 
>>         select WATCHDOG_CORE
>>         help
>>           This driver adds watchdog support for the integrated watchdogs in the
> 
> Gr{oetje,eeting}s,
> 
>                         Geert
>
Geert Uytterhoeven Feb. 14, 2024, 3:26 p.m. UTC | #2 
Hi Claudiu,

On Fri, Feb 9, 2024 at 1:25 PM claudiu beznea <claudiu.beznea@tuxon.dev> wrote:
> On 08.02.2024 14:53, Geert Uytterhoeven wrote:
> > On Thu, Feb 8, 2024 at 1:26 PM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> >> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> >>
> >> The rzg2l_wdt watchdog driver cannot work w/o CONFIG_PM=y (e.g. the
> >> clocks are enabled though pm_runtime_* specific APIs). To avoid building
> >> a driver that doesn't work make explicit the dependency on CONFIG_PM.
> >>
> >> Suggested-by: Guenter Roeck <linux@roeck-us.net>
> >> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> >> ---
> >>
> >> Changes in v6:
> >> - update patch description
> >> - fixed the dependency on COMPILE_TEST previously introduced
> >
> > Thanks for the update!
> >
> >> --- a/drivers/watchdog/Kconfig
> >> +++ b/drivers/watchdog/Kconfig
> >> @@ -911,6 +911,7 @@ config RENESAS_RZN1WDT
> >>  config RENESAS_RZG2LWDT
> >>         tristate "Renesas RZ/G2L WDT Watchdog"
> >>         depends on ARCH_RZG2L || ARCH_R9A09G011 || COMPILE_TEST
> >> +       depends on PM
> >
> > depends on PM || COMPILE_TEST
>
> Isn't "depends on PM" enough? As of [1] ("If multiple dependencies are
> defined, they are connected with '&&'") the above:
>
> depends on ARCH_RZG2L || ARCH_R9A09G011 || COMPILE_TEST
> depends on PM
>
> are translated into:
> depends on (ARCH_RZG2L || ARCH_R9A09G011 || COMPILE_TEST) && PM
>
> Please let me know if I'm wrong.

That is correct.  But you still can compile-test this driver when
compiling for a different platform, and CONFIG_PM is disabled.

Gr{oetje,eeting}s,

                        Geert
Claudiu Feb. 14, 2024, 3:51 p.m. UTC | #3 
Hi, Geert,

On 14.02.2024 17:26, Geert Uytterhoeven wrote:
> Hi Claudiu,
> 
> On Fri, Feb 9, 2024 at 1:25 PM claudiu beznea <claudiu.beznea@tuxon.dev> wrote:
>> On 08.02.2024 14:53, Geert Uytterhoeven wrote:
>>> On Thu, Feb 8, 2024 at 1:26 PM Claudiu <claudiu.beznea@tuxon.dev> wrote:
>>>> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>>>>
>>>> The rzg2l_wdt watchdog driver cannot work w/o CONFIG_PM=y (e.g. the
>>>> clocks are enabled though pm_runtime_* specific APIs). To avoid building
>>>> a driver that doesn't work make explicit the dependency on CONFIG_PM.
>>>>
>>>> Suggested-by: Guenter Roeck <linux@roeck-us.net>
>>>> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>>>> ---
>>>>
>>>> Changes in v6:
>>>> - update patch description
>>>> - fixed the dependency on COMPILE_TEST previously introduced
>>>
>>> Thanks for the update!
>>>
>>>> --- a/drivers/watchdog/Kconfig
>>>> +++ b/drivers/watchdog/Kconfig
>>>> @@ -911,6 +911,7 @@ config RENESAS_RZN1WDT
>>>>  config RENESAS_RZG2LWDT
>>>>         tristate "Renesas RZ/G2L WDT Watchdog"
>>>>         depends on ARCH_RZG2L || ARCH_R9A09G011 || COMPILE_TEST
>>>> +       depends on PM
>>>
>>> depends on PM || COMPILE_TEST
>>
>> Isn't "depends on PM" enough? As of [1] ("If multiple dependencies are
>> defined, they are connected with '&&'") the above:
>>
>> depends on ARCH_RZG2L || ARCH_R9A09G011 || COMPILE_TEST
>> depends on PM
>>
>> are translated into:
>> depends on (ARCH_RZG2L || ARCH_R9A09G011 || COMPILE_TEST) && PM
>>
>> Please let me know if I'm wrong.
> 
> That is correct.  But you still can compile-test this driver when
> compiling for a different platform, and CONFIG_PM is disabled.

Ok, I see, thank you!

> 
> Gr{oetje,eeting}s,
> 
>                         Geert
>
diff mbox series

Patch

diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index f6cb63a0d889..8bd87880ca3b 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -911,6 +911,7 @@  config RENESAS_RZN1WDT
 config RENESAS_RZG2LWDT
 	tristate "Renesas RZ/G2L WDT Watchdog"
 	depends on ARCH_RZG2L || ARCH_R9A09G011 || COMPILE_TEST
+	depends on PM
 	select WATCHDOG_CORE
 	help
 	  This driver adds watchdog support for the integrated watchdogs in the