linux-kernel - Re: [PATCH v3 5/5] lib, pci: unify generic pci

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Message-ID: <8ec1ae92206c090c79a9ab9586bd17349798b08f.camel@redhat.com>
Date:   Tue, 05 Dec 2023 15:34:12 +0100
From:   Philipp Stanner <pstanner@...hat.com>
To:     kernel test robot <lkp@...el.com>,
        Bjorn Helgaas <helgaas@...nel.org>,
        Arnd Bergmann <arnd@...db.de>,
        Hanjun Guo <guohanjun@...wei.com>, NeilBrown <neilb@...e.de>,
        Kent Overstreet <kmo@...erainc.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Niklas Schnelle <schnelle@...ux.ibm.com>,
        Uladzislau Koshchanka <koshchanka@...il.com>,
        John Sanpe <sanpeqf@...il.com>,
        Dave Jiang <dave.jiang@...el.com>,
        "Masami Hiramatsu (Google)" <mhiramat@...nel.org>,
        Kees Cook <keescook@...omium.org>,
        David Gow <davidgow@...gle.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Shuah Khan <skhan@...uxfoundation.org>,
        "wuqiang.matt" <wuqiang.matt@...edance.com>,
        Yury Norov <yury.norov@...il.com>,
        Jason Baron <jbaron@...mai.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Ben Dooks <ben.dooks@...ethink.co.uk>, dakr@...hat.com
Cc:     oe-kbuild-all@...ts.linux.dev,
        Linux Memory Management List <linux-mm@...ck.org>,
        linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
        linux-arch@...r.kernel.org, stable@...r.kernel.org
Subject: Re: [PATCH v3 5/5] lib, pci: unify generic pci_iounmap()

Alright, so it seems that not all architectures provide ioport_unmap().
So I'll provide yet another preprocessor guard in v4. Wohooo, we love
them...

P.

On Tue, 2023-12-05 at 18:44 +0800, kernel test robot wrote:
> Hi Philipp,
> 
> kernel test robot noticed the following build errors:
> 
> [auto build test ERROR on pci/next]
> [also build test ERROR on pci/for-linus arnd-asm-generic/master
> kees/for-next/pstore kees/for-next/kspp linus/master v6.7-rc4 next-
> 20231205]
> [If your patch is applied to the wrong git tree, kindly drop us a
> note.
> And when submitting patch, we suggest to use '--base' as documented
> in
> https://git-scm.com/docs/git-format-patch#_base_tree_information]
> 
> url:   
> https://github.com/intel-lab-lkp/linux/commits/Philipp-Stanner/lib-pci_iomap-c-fix-cleanup-bugs-in-pci_iounmap/20231204-204128
> base:  
> https://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git next
> patch link:   
> https://lore.kernel.org/r/20231204123834.29247-6-pstanner%40redhat.com
> patch subject: [PATCH v3 5/5] lib, pci: unify generic pci_iounmap()
> config: openrisc-virt_defconfig
> (https://download.01.org/0day-ci/archive/20231205/202312051813.09Wbvu
> sW-lkp@...el.com/config)
> compiler: or1k-linux-gcc (GCC) 13.2.0
> reproduce (this is a W=1 build):
> (https://download.01.org/0day-ci/archive/20231205/202312051813.09Wbvu
> sW-lkp@...el.com/reproduce)
> 
> If you fix the issue in a separate patch/commit (i.e. not just a new
> version of
> the same patch/commit), kindly add following tags
> > Reported-by: kernel test robot <lkp@...el.com>
> > Closes:
> > https://lore.kernel.org/oe-kbuild-all/202312051813.09WbvusW-lkp@intel.com/
> 
> All errors (new ones prefixed by >>):
> 
>    drivers/pci/iomap.c: In function 'pci_iounmap':
> > > drivers/pci/iomap.c:155:17: error: implicit declaration of
> > > function 'ioport_unmap'; did you mean 'devm_ioport_unmap'? [-
> > > Werror=implicit-function-declaration]
>      155 |                 ioport_unmap(addr);
>          |                 ^~~~~~~~~~~~
>          |                 devm_ioport_unmap
>    cc1: some warnings being treated as errors
> 
> 
> vim +155 drivers/pci/iomap.c
> 
>    144  
>    145  /**
>    146   * pci_iounmap - Unmapp a mapping
>    147   * @dev: PCI device the mapping belongs to
>    148   * @addr: start address of the mapping
>    149   *
>    150   * Unmapp a PIO or MMIO mapping.
>    151   */
>    152  void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
>    153  {
>    154          if (iomem_is_ioport(addr)) {
>  > 155                  ioport_unmap(addr);
>    156                  return;
>    157          }
>    158  
>    159          iounmap(addr);
>    160  }
>    161  EXPORT_SYMBOL(pci_iounmap);
>    162  
>