linux-kernel - Re: [PATCH 1/4] driver core: Use subdir-ccflags-* to inherit debug flag

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Date:   Fri, 5 Feb 2021 10:53:23 +0100
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Yicong Yang <yangyicong@...ilicon.com>
Cc:     jdelvare@...e.com, linux@...ck-us.net, giometti@...eenne.com,
        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,
        linuxarm@...neuler.org, prime.zeng@...wei.com
Subject: Re: [PATCH 1/4] driver core: Use subdir-ccflags-* to inherit debug
 flag

On Fri, Feb 05, 2021 at 05:44:12PM +0800, Yicong Yang wrote:
> From: Junhao He <hejunhao2@...ilicon.com>
> 
> Use subdir-ccflags-* instead of ccflags-* to inherit the debug
> settings from Kconfig when traversing subdirectories.

That says what you do, but not _why_ you are doing it.

What does this offer in benefit of the existing way?  What is it fixing?
Why do this "churn"?

thanks,

greg k-h