sparc32: use PUD rather than PGD to get PMD in srmmu_nocache_init()

The kbuild test robot reported the following warning: arch/sparc/mm/srmmu.c: In function 'srmmu_nocache_init': arch/sparc/mm/srmmu.c:300:9: error: variable 'pud' set but not used [-Werror=unused-but-set-variable] 300 | pud_t *pud; This warning is caused by misprint in the page table traversal in srmmu_nocache_init() function which accessed a PMD entry using PGD rather than PUD. Since sparc32 has only 3 page table levels, the PGD and PUD are essentially the same and usage of __nocache_fix() removed the type checking. Use PUD for the consistency and to silence the compiler warning.

Mike Rapoport committed 6 years ago

Commit c2bc26f1 parent f7fa1871 file · +1 −1Browse files

Unified · Split

arch/sparc/mm/srmmu.c+1−1

@@ -333,7 +333,7 @@ static void __init srmmu_nocache_init(void) · 332 unmodified lines
333	333	pgd = pgd_offset_k(vaddr);
334	334	p4d = p4d_offset(__nocache_fix(pgd), vaddr);
335	335	pud = pud_offset(__nocache_fix(p4d), vaddr);
336		− pmd = pmd_offset(__nocache_fix(pgd), vaddr);
	336	+ pmd = pmd_offset(__nocache_fix(pud), vaddr);
337	337	pte = pte_offset_kernel(__nocache_fix(pmd), vaddr);
338	338
339	339	pteval = ((paddr >> 4) \| SRMMU_ET_PTE \| SRMMU_PRIV);