linux-kernel - RE: drivers/net/wireless/realtek/rtw88/pci.c:1477:5: warning: no previous prototype for 'rtw_pci

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Date:   Fri, 28 Aug 2020 02:25:46 +0000
From:   Tony Chuang <yhchuang@...ltek.com>
To:     Kalle Valo <kvalo@...eaurora.org>,
        kernel test robot <lkp@...el.com>
CC:     Kevin Yang <kevin_yang@...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/pci.c:1477:5: warning: no previous prototype for 'rtw_pci_probe'

> + linux-wireless
> 
> kernel test robot <lkp@...el.com> writes:
> 
> > Hi Zong-Zhe,
> >
> > FYI, the error/warning still remains.
> >
> > tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
> master
> > head:   23ee3e4e5bd27bdbc0f1785eef7209ce872794c7
> > commit: 72f256c2b948622cc45ff8bc0456dd6039d8fe36 rtw88: extract:
> > export symbols about pci interface
> > date:   10 weeks ago
> > config: arc-randconfig-r026-20200725 (attached as .config)
> > compiler: arc-elf-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 72f256c2b948622cc45ff8bc0456dd6039d8fe36
> >         # save the attached .config to linux build tree
> >         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0
> make.cross ARCH=arc
> >
> > 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/pci.c:1477:5: warning: no
> >>> previous prototype for 'rtw_pci_probe' [-Wmissing-prototypes]
> >     1477 | int rtw_pci_probe(struct pci_dev *pdev,
> >          |     ^~~~~~~~~~~~~
> >>> drivers/net/wireless/realtek/rtw88/pci.c:1557:6: warning: no
> >>> previous prototype for 'rtw_pci_remove' [-Wmissing-prototypes]
> >     1557 | void rtw_pci_remove(struct pci_dev *pdev)
> >          |      ^~~~~~~~~~~~~~
> >>> drivers/net/wireless/realtek/rtw88/pci.c:1579:6: warning: no
> >>> previous prototype for 'rtw_pci_shutdown' [-Wmissing-prototypes]
> >     1579 | void rtw_pci_shutdown(struct pci_dev *pdev)
> >          |      ^~~~~~~~~~~~~~~~
> 
> Tony, these are older warnings but please also check these.
> 

I think this warning can be ignored, as the commit was going to export
pci symbols for the follow-up patches to use, such as:

f56f08636dda rtw88: extract: make 8723d an individual kernel module
416e87fcc780 rtw88: extract: make 8822b an individual kernel module
ba0fbe236fb8 rtw88: extract: make 8822c an individual kernel module

And these patches were submitted and applied together.

Thanks,
Yen-Hsuan