arch/arm/mach-versatile/versatile.c:56:14: warning: no previous prototype for function 'mmc_status'

From: kernel test robot
Date: Mon Jun 27 2022 - 07:07:49 EST


Hi Arnd,

FYI, the error/warning still remains.

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 03c765b0e3b4cb5063276b086c76f7a612856a9a
commit: d7445676e86900f8dc363825033ff62416c216e0 ARM: versatile: move integrator/realview/vexpress to versatile
date: 3 months ago
config: arm-multi_v5_defconfig (https://download.01.org/0day-ci/archive/20220627/202206271917.3F0ogBzt-lkp@xxxxxxxxx/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 016342e319fd31e41cf5ed16a6140a8ea2de74dd)
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 arm cross compiling tool for clang build
# apt-get install binutils-arm-linux-gnueabi
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d7445676e86900f8dc363825033ff62416c216e0
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout d7445676e86900f8dc363825033ff62416c216e0
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

>> arch/arm/mach-versatile/versatile.c:56:14: warning: no previous prototype for function 'mmc_status' [-Wmissing-prototypes]
unsigned int mmc_status(struct device *dev)
^
arch/arm/mach-versatile/versatile.c:56:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
unsigned int mmc_status(struct device *dev)
^
static
1 warning generated.


vim +/mmc_status +56 arch/arm/mach-versatile/versatile.c

a7096789211193 arch/arm/mach-versatile/versatile_dt.c Rob Herring 2015-12-08 55
a7096789211193 arch/arm/mach-versatile/versatile_dt.c Rob Herring 2015-12-08 @56 unsigned int mmc_status(struct device *dev)
a7096789211193 arch/arm/mach-versatile/versatile_dt.c Rob Herring 2015-12-08 57 {
a7096789211193 arch/arm/mach-versatile/versatile_dt.c Rob Herring 2015-12-08 58 struct amba_device *adev = container_of(dev, struct amba_device, dev);
a7096789211193 arch/arm/mach-versatile/versatile_dt.c Rob Herring 2015-12-08 59 u32 mask;
a7096789211193 arch/arm/mach-versatile/versatile_dt.c Rob Herring 2015-12-08 60
a7096789211193 arch/arm/mach-versatile/versatile_dt.c Rob Herring 2015-12-08 61 if (adev->res.start == VERSATILE_MMCI0_BASE)
a7096789211193 arch/arm/mach-versatile/versatile_dt.c Rob Herring 2015-12-08 62 mask = 1;
a7096789211193 arch/arm/mach-versatile/versatile_dt.c Rob Herring 2015-12-08 63 else
a7096789211193 arch/arm/mach-versatile/versatile_dt.c Rob Herring 2015-12-08 64 mask = 2;
a7096789211193 arch/arm/mach-versatile/versatile_dt.c Rob Herring 2015-12-08 65
a7096789211193 arch/arm/mach-versatile/versatile_dt.c Rob Herring 2015-12-08 66 return readl(versatile_sys_base + VERSATILE_SYS_MCI_OFFSET) & mask;
a7096789211193 arch/arm/mach-versatile/versatile_dt.c Rob Herring 2015-12-08 67 }
a7096789211193 arch/arm/mach-versatile/versatile_dt.c Rob Herring 2015-12-08 68

:::::: The code at line 56 was first introduced by commit
:::::: a70967892111934e292485ce84f1bab38cc55380 ARM: versatile: merge mach code into a single file

:::::: TO: Rob Herring <robh@xxxxxxxxxx>
:::::: CC: Arnd Bergmann <arnd@xxxxxxxx>

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https://01.org/lkp