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SubjectRe: [PATCH 1/4] of: add struct page support to rmem
Hi Li,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on robh/for-next]
[also build test WARNING on arm64/for-next/core arm-perf/for-next/perf linus/master v5.19-rc6 next-20220715]
[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/Li-Chen/add-struct-page-and-Direct-I-O-support-to-reserved-memory/20220711-202957
base: https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next
config: arm64-allyesconfig (https://download.01.org/0day-ci/archive/20220716/202207160854.nSdKYSY8-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 12.1.0
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
# https://github.com/intel-lab-lkp/linux/commit/8b66b4b9614f1c7bb8b2d8fac17d5a2a73acf954
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Li-Chen/add-struct-page-and-Direct-I-O-support-to-reserved-memory/20220711-202957
git checkout 8b66b4b9614f1c7bb8b2d8fac17d5a2a73acf954
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/mailbox/ drivers/of/

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

All warnings (new ones prefixed by >>):

drivers/of/of_reserved_mem.c: In function 'reserved_mem_memremap_pages':
drivers/of/of_reserved_mem.c:633:50: error: invalid application of 'sizeof' to incomplete type 'struct dev_pagemap'
633 | pgmap_rmem_dio = devm_kzalloc(dev, sizeof(*pgmap_rmem_dio), GFP_KERNEL);
| ^
drivers/of/of_reserved_mem.c:635:23: error: invalid use of undefined type 'struct dev_pagemap'
635 | pgmap_rmem_dio->range.start = rmem->base;
| ^~
drivers/of/of_reserved_mem.c:636:23: error: invalid use of undefined type 'struct dev_pagemap'
636 | pgmap_rmem_dio->range.end = rmem->base + rmem->size - 1;
| ^~
drivers/of/of_reserved_mem.c:637:23: error: invalid use of undefined type 'struct dev_pagemap'
637 | pgmap_rmem_dio->nr_range = 1;
| ^~
drivers/of/of_reserved_mem.c:638:23: error: invalid use of undefined type 'struct dev_pagemap'
638 | pgmap_rmem_dio->type = MEMORY_DEVICE_GENERIC;
| ^~
drivers/of/of_reserved_mem.c:638:32: error: 'MEMORY_DEVICE_GENERIC' undeclared (first use in this function)
638 | pgmap_rmem_dio->type = MEMORY_DEVICE_GENERIC;
| ^~~~~~~~~~~~~~~~~~~~~
drivers/of/of_reserved_mem.c:638:32: note: each undeclared identifier is reported only once for each function it appears in
In file included from include/linux/printk.h:584,
from include/linux/kernel.h:29,
from include/linux/cpumask.h:10,
from include/linux/smp.h:13,
from include/linux/lockdep.h:14,
from include/linux/mutex.h:17,
from include/linux/kernfs.h:11,
from include/linux/sysfs.h:16,
from include/linux/kobject.h:20,
from include/linux/of.h:17,
from drivers/of/of_reserved_mem.c:15:
drivers/of/of_reserved_mem.c:641:42: error: invalid use of undefined type 'struct dev_pagemap'
641 | __func__, pgmap_rmem_dio->range.start, pgmap_rmem_dio->range.end);
| ^~
include/linux/dynamic_debug.h:134:29: note: in definition of macro '__dynamic_func_call'
134 | func(&id, ##__VA_ARGS__); \
| ^~~~~~~~~~~
include/linux/dynamic_debug.h:162:9: note: in expansion of macro '_dynamic_func_call'
162 | _dynamic_func_call(fmt, __dynamic_pr_debug, \
| ^~~~~~~~~~~~~~~~~~
include/linux/printk.h:599:9: note: in expansion of macro 'dynamic_pr_debug'
599 | dynamic_pr_debug(fmt, ##__VA_ARGS__)
| ^~~~~~~~~~~~~~~~
drivers/of/of_reserved_mem.c:640:9: note: in expansion of macro 'pr_debug'
640 | pr_debug("%s, will do devm_memremap_pages, start from %llx, to %llx\n",
| ^~~~~~~~
drivers/of/of_reserved_mem.c:641:71: error: invalid use of undefined type 'struct dev_pagemap'
641 | __func__, pgmap_rmem_dio->range.start, pgmap_rmem_dio->range.end);
| ^~
include/linux/dynamic_debug.h:134:29: note: in definition of macro '__dynamic_func_call'
134 | func(&id, ##__VA_ARGS__); \
| ^~~~~~~~~~~
include/linux/dynamic_debug.h:162:9: note: in expansion of macro '_dynamic_func_call'
162 | _dynamic_func_call(fmt, __dynamic_pr_debug, \
| ^~~~~~~~~~~~~~~~~~
include/linux/printk.h:599:9: note: in expansion of macro 'dynamic_pr_debug'
599 | dynamic_pr_debug(fmt, ##__VA_ARGS__)
| ^~~~~~~~~~~~~~~~
drivers/of/of_reserved_mem.c:640:9: note: in expansion of macro 'pr_debug'
640 | pr_debug("%s, will do devm_memremap_pages, start from %llx, to %llx\n",
| ^~~~~~~~
drivers/of/of_reserved_mem.c:643:17: error: implicit declaration of function 'devm_memremap_pages'; did you mean 'devm_free_pages'? [-Werror=implicit-function-declaration]
643 | vaddr = devm_memremap_pages(dev, pgmap_rmem_dio);
| ^~~~~~~~~~~~~~~~~~~
| devm_free_pages
>> drivers/of/of_reserved_mem.c:643:15: warning: assignment to 'void *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
643 | vaddr = devm_memremap_pages(dev, pgmap_rmem_dio);
| ^
cc1: some warnings being treated as errors


vim +643 drivers/of/of_reserved_mem.c

610
611 /**
612 * reserved_mem_memremap_pages() - build struct pages for reserved mem
613 * @dev: device pointer
614 * @rmem: reserved memory region from dts, which can be get by
615 * get_reserved_mem_from_dev(dev)
616 *
617 * Returns: 0 on success or a negative error-code on failure.
618 */
619 void *reserved_mem_memremap_pages(struct device *dev, struct reserved_mem *rmem)
620 {
621 struct dev_pagemap *pgmap_rmem_dio;
622 void *vaddr;
623 struct page **pages;
624 int i;
625 unsigned long offset = 0;
626 struct page *page;
627
628 rmem->nr_pages = DIV_ROUND_UP(rmem->size, PAGE_SIZE);
629 pages = kvmalloc_array(rmem->nr_pages, sizeof(*pages), GFP_KERNEL);
630 if (!pages)
631 return ERR_PTR(-ENOMEM);
632
633 pgmap_rmem_dio = devm_kzalloc(dev, sizeof(*pgmap_rmem_dio), GFP_KERNEL);
634
635 pgmap_rmem_dio->range.start = rmem->base;
636 pgmap_rmem_dio->range.end = rmem->base + rmem->size - 1;
637 pgmap_rmem_dio->nr_range = 1;
638 pgmap_rmem_dio->type = MEMORY_DEVICE_GENERIC;
639
640 pr_debug("%s, will do devm_memremap_pages, start from %llx, to %llx\n",
641 __func__, pgmap_rmem_dio->range.start, pgmap_rmem_dio->range.end);
642
> 643 vaddr = devm_memremap_pages(dev, pgmap_rmem_dio);

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

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