diff options
Diffstat (limited to 'arch/csky/mm')
| -rw-r--r-- | arch/csky/mm/highmem.c | 5 | ||||
| -rw-r--r-- | arch/csky/mm/ioremap.c | 14 |
2 files changed, 19 insertions, 0 deletions
diff --git a/arch/csky/mm/highmem.c b/arch/csky/mm/highmem.c index 53b1bfa4c462..3317b774f6dc 100644 --- a/arch/csky/mm/highmem.c +++ b/arch/csky/mm/highmem.c @@ -141,6 +141,11 @@ static void __init fixrange_init(unsigned long start, unsigned long end, for (; (k < PTRS_PER_PMD) && (vaddr != end); pmd++, k++) { if (pmd_none(*pmd)) { pte = (pte_t *) memblock_alloc_low(PAGE_SIZE, PAGE_SIZE); + if (!pte) + panic("%s: Failed to allocate %lu bytes align=%lx\n", + __func__, PAGE_SIZE, + PAGE_SIZE); + set_pmd(pmd, __pmd(__pa(pte))); BUG_ON(pte != pte_offset_kernel(pmd, 0)); } diff --git a/arch/csky/mm/ioremap.c b/arch/csky/mm/ioremap.c index cb7c03e5cd21..8473b6bdf512 100644 --- a/arch/csky/mm/ioremap.c +++ b/arch/csky/mm/ioremap.c @@ -46,3 +46,17 @@ void iounmap(void __iomem *addr) vunmap((void *)((unsigned long)addr & PAGE_MASK)); } EXPORT_SYMBOL(iounmap); + +pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn, + unsigned long size, pgprot_t vma_prot) +{ + if (!pfn_valid(pfn)) { + vma_prot.pgprot |= _PAGE_SO; + return pgprot_noncached(vma_prot); + } else if (file->f_flags & O_SYNC) { + return pgprot_noncached(vma_prot); + } + + return vma_prot; +} +EXPORT_SYMBOL(phys_mem_access_prot); |