linux-kernel - Re: [PATCH v2 3/4] pps: Use subdir-ccflags-* to inherit debug flag

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Message-ID: <36b30ed8-a930-d1c3-2725-c6653f23490c@enneenne.com>
Date:   Tue, 9 Feb 2021 13:26:48 +0100
From:   Rodolfo Giometti <giometti@...eenne.com>
To:     Yicong Yang <yangyicong@...ilicon.com>, gregkh@...uxfoundation.org,
        jdelvare@...e.com, linux@...ck-us.net, abbotti@....co.uk,
        hsweeten@...ionengravers.com, kw@...ux.com, helgaas@...nel.org,
        linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
        linux-hwmon@...r.kernel.org, devel@...verdev.osuosl.org,
        linux-kbuild@...r.kernel.org, masahiroy@...nel.org,
        michal.lkml@...kovi.net
Cc:     prime.zeng@...wei.com, linuxarm@...neuler.org
Subject: Re: [PATCH v2 3/4] pps: Use subdir-ccflags-* to inherit debug flag

On 09/02/21 12:08, Yicong Yang wrote:
> From: Junhao He <hejunhao2@...ilicon.com>
> 
> We use ccflags-$(CONFIG_PPS_DEBUG) for the debug
> message in drivers/pps, but the DEBUG flag will not pass to
> the subdirectory.
> 
> Considering CONFIG_HWMON_DEBUG_CHIP intends to turn on debug
> recursively under driver/pps, so it will be clearer to use
> subdir-ccflags-* instead of ccflags-* to inherit
> the debug settings from Kconfig when traversing subdirectories.
> 
> Suggested-by: Bjorn Helgaas <bhelgaas@...gle.com>
> Signed-off-by: Junhao He <hejunhao2@...ilicon.com>
> Signed-off-by: Yicong Yang <yangyicong@...ilicon.com>
> ---
>  drivers/pps/Makefile | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/pps/Makefile b/drivers/pps/Makefile
> index ceaf65c..7a2d3f7 100644
> --- a/drivers/pps/Makefile
> +++ b/drivers/pps/Makefile
> @@ -8,4 +8,4 @@ pps_core-$(CONFIG_NTP_PPS)	+= kc.o
>  obj-$(CONFIG_PPS)		:= pps_core.o
>  obj-y				+= clients/ generators/
>  
> -ccflags-$(CONFIG_PPS_DEBUG) := -DDEBUG
> +subdir-ccflags-$(CONFIG_PPS_DEBUG) := -DDEBUG
> 

Acked-by: Rodolfo Giometti <giometti@...eenne.com>

-- 
GNU/Linux Solutions                  e-mail: giometti@...eenne.com
Linux Device Driver                          giometti@...ux.it
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