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Date:   Fri, 3 Nov 2017 14:23:45 +0100
From:   SF Markus Elfring <>
To:     Andy Shevchenko <>,
        Darren Hart <>,
Cc:     Marco Chiappero <>,
        Matthew Garrett <>,
        Mattia Dongili <>,
        LKML <>,,
        Andy Shevchenko <>
Subject: Re: [PATCH v2 0/3] Sony-laptop: Adjustments for

> I have applied first two,

Thanks for another change acceptance.

> the last one is subject to discuss a necessity of it.

I can offer another bit of information for this software development discussion.

The following build settings were active in my “Makefile” for this Linux test case.

HOSTCFLAGS   = -Wall -Wmissing-prototypes -Wstrict-prototypes -O0 -fomit-frame-pointer -std=gnu89

The affected source file can be compiled for the processor architecture “x86_64”
by a tool like “GCC 6.4.1+r251631-1.3” from the software distribution
“openSUSE Tumbleweed” with the following command example.

my_cc=/usr/bin/gcc-6 \
&& my_module=drivers/platform/x86/sony-laptop.ko \
&& git checkout ':/^Sony-laptop: Delete an unnecessary variable initialisation in sony_nc_setup_rfkill' \
&& make -j4 CC="${my_cc}" HOSTCC="${my_cc}" allmodconfig "${my_module}" \
&& size "${my_module}" \
&& git checkout ':/^Sony-laptop: Use common error handling code in sony_nc_setup_rfkill' \
&& make -j4 CC="${my_cc}" HOSTCC="${my_cc}" allmodconfig "${my_module}" \
&& size "${my_module}"

Do you find the following details useful for further clarification?

text: -32
data: 0
bss:  0


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