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Subject[hch-block:blkdev.h-includes 4/16] include/linux/genhd.h:335:12: error: unused function 'bd_register_pending_holders'
tree:   git://git.infradead.org/users/hch/block.git blkdev.h-includes
head: 48f7fda047613ceec07881f14a5eaf1ee19d4433
commit: cb48a9689b4fe34897d12d2e037b9f5094785832 [4/16] block: support delayed holder registration
config: arm-randconfig-r005-20210724 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 3f2c1e99e44d028d5e9dd685f3c568f2661f2f68)
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
git remote add hch-block git://git.infradead.org/users/hch/block.git
git fetch --no-tags hch-block blkdev.h-includes
git checkout cb48a9689b4fe34897d12d2e037b9f5094785832
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm

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

All errors (new ones prefixed by >>):

In file included from drivers/gpu/drm/tilcdc/tilcdc_plane.c:7:
In file included from include/drm/drm_atomic.h:31:
In file included from include/drm/drm_crtc.h:28:
In file included from include/linux/i2c.h:18:
In file included from include/linux/regulator/consumer.h:35:
In file included from include/linux/suspend.h:5:
In file included from include/linux/swap.h:9:
In file included from include/linux/memcontrol.h:22:
In file included from include/linux/writeback.h:14:
In file included from include/linux/blk-cgroup.h:23:
In file included from include/linux/blkdev.h:8:
>> include/linux/genhd.h:335:12: error: unused function 'bd_register_pending_holders' [-Werror,-Wunused-function]
static int bd_register_pending_holders(struct gendisk *disk)
^
1 error generated.


vim +/bd_register_pending_holders +335 include/linux/genhd.h

320
321 #ifdef CONFIG_BLOCK_HOLDER_DEPRECATED
322 int bd_link_disk_holder(struct block_device *bdev, struct gendisk *disk);
323 void bd_unlink_disk_holder(struct block_device *bdev, struct gendisk *disk);
324 int bd_register_pending_holders(struct gendisk *disk);
325 #else
326 static inline int bd_link_disk_holder(struct block_device *bdev,
327 struct gendisk *disk)
328 {
329 return 0;
330 }
331 static inline void bd_unlink_disk_holder(struct block_device *bdev,
332 struct gendisk *disk)
333 {
334 }
> 335 static int bd_register_pending_holders(struct gendisk *disk)
336 {
337 return 0;
338 }
339 #endif /* CONFIG_BLOCK_HOLDER_DEPRECATED */
340

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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