Re: [PATCH v7 1/4] ioremap: Update pgtable free interfaces with addr

kbuild test robot
2018-03-29T11:54:22Z

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Hi Chintan,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on v4.16-rc7]
[also build test ERROR on next-20180328]
[cannot apply to arm64/for-next/core tip/x86/core asm-generic/master]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url: https://github.com/0day-ci/linux/commits/Chintan-Pandya/ioremap-Update-pgtable-free-interfaces-with-addr/20180329-133736
config: x86_64-rhel (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
# save the attached .config to linux build tree
make ARCH=x86_64

All errors (new ones prefixed by >>):

arch/x86/mm/pgtable.c: In function 'pud_free_pmd_page':
>> arch/x86/mm/pgtable.c:725:8: error: too few arguments to function 'pmd_free_pte_page'
if (!pmd_free_pte_page(&pmd[i]), addr + (i * PMD_SIZE))
^~~~~~~~~~~~~~~~~
In file included from arch/x86/include/asm/pgtable.h:1292:0,
from include/linux/memremap.h:8,
from include/linux/mm.h:27,
from arch/x86/mm/pgtable.c:2:
include/asm-generic/pgtable.h:987:5: note: declared here
int pmd_free_pte_page(pmd_t *pmd, unsigned long addr);
^~~~~~~~~~~~~~~~~
arch/x86/mm/pgtable.c:725:34: warning: left-hand operand of comma expression has no effect [-Wunused-value]
if (!pmd_free_pte_page(&pmd[i]), addr + (i * PMD_SIZE))
^

vim +/pmd_free_pte_page +725 arch/x86/mm/pgtable.c

705
706 /**
707 * pud_free_pmd_page - Clear pud entry and free pmd page.
708 * @pud: Pointer to a PUD.
709 * @addr: Virtual address associated with pud.
710 *
711 * Context: The pud range has been unmaped and TLB purged.
712 * Return: 1 if clearing the entry succeeded. 0 otherwise.
713 */
714 int pud_free_pmd_page(pud_t *pud, unsigned long addr)
715 {
716 pmd_t *pmd;
717 int i;
718
719 if (pud_none(*pud))
720 return 1;
721
722 pmd = (pmd_t *)pud_page_vaddr(*pud);
723
724 for (i = 0; i < PTRS_PER_PMD; i++)
> 725 if (!pmd_free_pte_page(&pmd[i]), addr + (i * PMD_SIZE))
726 return 0;
727
728 pud_clear(pud);
729 free_page((unsigned long)pmd);
730
731 return 1;
732 }
733

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