linux-kernel - RE: drivers/net/wireless/realtek/rtw88/rtw8821c.c:71:8: warning: type qualifiers ignored on function return type

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Date:   Fri, 28 Aug 2020 02:26:58 +0000
From:   Tony Chuang <yhchuang@...ltek.com>
To:     Kalle Valo <kvalo@...eaurora.org>,
        kernel test robot <lkp@...el.com>
CC:     Andy Huang <tehuang@...ltek.com>,
        "kbuild-all@...ts.01.org" <kbuild-all@...ts.01.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>
Subject: RE: drivers/net/wireless/realtek/rtw88/rtw8821c.c:71:8: warning: type qualifiers ignored on function return type

Hi Andy

> + linux-wireless
> 
> kernel test robot <lkp@...el.com> writes:
> 
> > Hi Tzu-En,
> >
> > First bad commit (maybe != root cause):
> >
> > tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
> master
> > head:   15bc20c6af4ceee97a1f90b43c0e386643c071b4
> > commit: f745eb9ca5bf823bc5c0f82a434cefb41c57844e rtw88: 8821c: Add
> 8821CE to Kconfig and Makefile
> > date:   6 weeks ago
> > config: arm-randconfig-r012-20200827 (attached as .config)
> > compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0
> > reproduce (this is a W=1 build):
> >         wget
> https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O
> ~/bin/make.cross
> >         chmod +x ~/bin/make.cross
> >         git checkout f745eb9ca5bf823bc5c0f82a434cefb41c57844e
> >         # save the attached .config to linux build tree
> >         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0
> make.cross ARCH=arm
> >
> > If you fix the issue, kindly add following tag as appropriate
> > Reported-by: kernel test robot <lkp@...el.com>
> >
> > All warnings (new ones prefixed by >>):
> >
> >>> drivers/net/wireless/realtek/rtw88/rtw8821c.c:71:8: warning: type
> qualifiers ignored on function return type [-Wignored-qualifiers]
> >       71 | static const u8 rtw8821c_get_swing_index(struct rtw_dev
> *rtwdev)
> >          |        ^~~~~
> 
> Tony, please check this.
> 

Andy, please send a patch to fix it.

Thanks,
Yen-Hsuan