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SubjectRe: arch/riscv/mm/init.c:782:83: warning: suggest braces around empty body in an 'if' statement
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Hi Palmer,

On 5/22/22 14:19, kernel test robot wrote:
> Hi Qinglin,
>
> FYI, the error/warning still remains.
>
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head: 4b0986a3613c92f4ec1bdc7f60ec66fea135991f
> commit: 677b9eb8810edc6c616a699018a83e24ed0cccab riscv: mm: Prepare pt_ops helper functions for sv57
> date: 3 months ago
> config: riscv-randconfig-r042-20220522 (https://download.01.org/0day-ci/archive/20220523/202205230554.bQhtkCTA-lkp@intel.com/config)
> compiler: riscv32-linux-gcc (GCC) 11.3.0
> 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://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=677b9eb8810edc6c616a699018a83e24ed0cccab
> git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
> git fetch --no-tags linus master
> git checkout 677b9eb8810edc6c616a699018a83e24ed0cccab
> # save the config file
> mkdir build_dir && cp config build_dir/.config
> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash arch/riscv/mm/
>
> 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 >>):
>
> arch/riscv/mm/init.c: In function 'create_fdt_early_page_table':
>>> arch/riscv/mm/init.c:782:83: warning: suggest braces around empty body in an 'if' statement [-Wempty-body]
> 782 | (uintptr_t)early_dtb_pud, P4D_SIZE, PAGE_TABLE);
> | ^
> arch/riscv/mm/init.c:786:83: warning: suggest braces around empty body in an 'if' statement [-Wempty-body]
> 786 | (uintptr_t)early_dtb_pmd, PUD_SIZE, PAGE_TABLE);
> | ^
> arch/riscv/mm/init.c: At top level:
> arch/riscv/mm/init.c:813:13: warning: no previous prototype for 'pt_ops_set_early' [-Wmissing-prototypes]
> 813 | void __init pt_ops_set_early(void)
> | ^~~~~~~~~~~~~~~~
> arch/riscv/mm/init.c:835:13: warning: no previous prototype for 'pt_ops_set_fixmap' [-Wmissing-prototypes]
> 835 | void __init pt_ops_set_fixmap(void)
> | ^~~~~~~~~~~~~~~~~
> arch/riscv/mm/init.c:853:13: warning: no previous prototype for 'pt_ops_set_late' [-Wmissing-prototypes]
> 853 | void __init pt_ops_set_late(void)
> | ^~~~~~~~~~~~~~~

What is the status of your patch for this build warning?

[PATCH v2 1/4] RISC-V: Avoid empty create_*_mapping definitions

Thanks.

--
~Randy

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