[asahilinux:nvme-v2 5/6] drivers/soc/apple/rtkit.c:575:21: warning: no previous prototype for function 'apple_rtkit_init'

From: kernel test robot
Date: Sun Apr 03 2022 - 12:00:40 EST


tree: https://github.com/AsahiLinux/linux nvme-v2
head: 1c4210208a7dffa2a6697b0be5fa1da9f2bc448c
commit: 49f954ccdfe134d00b9e17b9ff5186a47725c6bf [5/6] soc: apple: Add RTKit IPC library
config: arm64-randconfig-r015-20220403 (https://download.01.org/0day-ci/archive/20220403/202204032336.1xnXEpJ7-lkp@xxxxxxxxx/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project c4a1b07d0979e7ff20d7d541af666d822d66b566)
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 arm64 cross compiling tool for clang build
# apt-get install binutils-aarch64-linux-gnu
# https://github.com/AsahiLinux/linux/commit/49f954ccdfe134d00b9e17b9ff5186a47725c6bf
git remote add asahilinux https://github.com/AsahiLinux/linux
git fetch --no-tags asahilinux nvme-v2
git checkout 49f954ccdfe134d00b9e17b9ff5186a47725c6bf
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/soc/apple/

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

All warnings (new ones prefixed by >>):

>> drivers/soc/apple/rtkit.c:575:21: warning: no previous prototype for function 'apple_rtkit_init' [-Wmissing-prototypes]
struct apple_rtkit *apple_rtkit_init(struct device *dev, void *cookie,
^
drivers/soc/apple/rtkit.c:575:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
struct apple_rtkit *apple_rtkit_init(struct device *dev, void *cookie,
^
static
>> drivers/soc/apple/rtkit.c:789:6: warning: no previous prototype for function 'apple_rtkit_free' [-Wmissing-prototypes]
void apple_rtkit_free(struct apple_rtkit *rtk)
^
drivers/soc/apple/rtkit.c:789:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void apple_rtkit_free(struct apple_rtkit *rtk)
^
static
2 warnings generated.


vim +/apple_rtkit_init +575 drivers/soc/apple/rtkit.c

574
> 575 struct apple_rtkit *apple_rtkit_init(struct device *dev, void *cookie,
576 const char *mbox_name, int mbox_idx,
577 const struct apple_rtkit_ops *ops)
578 {
579 struct apple_rtkit *rtk;
580 int ret;
581
582 if (!ops)
583 return ERR_PTR(-EINVAL);
584
585 rtk = kzalloc(sizeof(*rtk), GFP_KERNEL);
586 if (!rtk)
587 return ERR_PTR(-ENOMEM);
588
589 rtk->dev = dev;
590 rtk->cookie = cookie;
591 rtk->ops = ops;
592
593 init_completion(&rtk->epmap_completion);
594 init_completion(&rtk->reinit_completion);
595 init_completion(&rtk->iop_pwr_ack_completion);
596 init_completion(&rtk->ap_pwr_ack_completion);
597
598 bitmap_zero(rtk->endpoints, APPLE_RTKIT_MAX_ENDPOINTS);
599 set_bit(APPLE_RTKIT_EP_MGMT, rtk->endpoints);
600
601 rtk->mbox_name = mbox_name;
602 rtk->mbox_idx = mbox_idx;
603 rtk->mbox_cl.dev = dev;
604 rtk->mbox_cl.tx_block = true;
605 rtk->mbox_cl.knows_txdone = false;
606 rtk->mbox_cl.rx_callback = &apple_rtkit_rx_callback;
607
608 ret = apple_rtkit_request_mbox_chan(rtk);
609 if (ret)
610 return (struct apple_rtkit *)ERR_PTR(ret);
611
612 return rtk;
613 }
614

--
0-DAY CI Kernel Test Service
https://01.org/lkp