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SubjectRe: [PATCH] mmc: sdhci-iproc: Add ACPI bindings for the rpi4
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Hi,

On 1/8/21 7:10 PM, kernel test robot wrote:
> Hi Jeremy,
>
> Thank you for the patch! Perhaps something to improve:
>
> [auto build test WARNING on linus/master]
> [also build test WARNING on v5.11-rc2 next-20210108]
> [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]
>
> url: https://github.com/0day-ci/linux/commits/Jeremy-Linton/mmc-sdhci-iproc-Add-ACPI-bindings-for-the-rpi4/20210109-051645
> base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 6279d812eab67a6df6b22fa495201db6f2305924
> config: riscv-randconfig-r012-20210108 (attached as .config)
> compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project bc556e5685c0f97e79fb7b3c6f15cc5062db8e36)
> 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
> # install riscv cross compiling tool for clang build
> # apt-get install binutils-riscv64-linux-gnu
> # https://github.com/0day-ci/linux/commit/659eacf5a5de971ea94390dd6c7443c82d53ea5e
> git remote add linux-review https://github.com/0day-ci/linux
> git fetch --no-tags linux-review Jeremy-Linton/mmc-sdhci-iproc-Add-ACPI-bindings-for-the-rpi4/20210109-051645
> git checkout 659eacf5a5de971ea94390dd6c7443c82d53ea5e
> # save the attached .config to linux build tree
> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=riscv
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@intel.com>
>
> All warnings (new ones prefixed by >>):

(trimming)

> include/asm-generic/io.h:1005:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
> return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
> ~~~~~~~~~~ ^
>>> drivers/mmc/host/sdhci-iproc.c:272:38: warning: unused variable 'bcm_arasan_data' [-Wunused-const-variable]
> static const struct sdhci_iproc_data bcm_arasan_data = {

I think this is the only one caused by this patch, and its because the
new structures are only used inside the #ifdef ACPI block.

I will post a v2.

> ^
> 8 warnings generated.
>
>
> vim +/bcm_arasan_data +272 drivers/mmc/host/sdhci-iproc.c
>
> 271
> > 272 static const struct sdhci_iproc_data bcm_arasan_data = {
> 273 .pdata = &sdhci_bcm_arasan_data,
> 274 };
> 275
>
> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
>

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