Merge tag 'trace-seq-buf-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/roste...

[cascardo/linux.git] / arch / x86 / mm / iomap_32.c

diff --git a/arch/x86/mm/iomap_32.c b/arch/x86/mm/iomap_32.c
index 7b179b4..9ca35fc 100644 (file)
--- a/arch/x86/mm/iomap_32.c
+++ b/arch/x86/mm/iomap_32.c
@@ -33,17 +33,17 @@ static int is_io_mapping_possible(resource_size_t base, unsigned long size)
 
 int iomap_create_wc(resource_size_t base, unsigned long size, pgprot_t *prot)
 {
-       unsigned long flag = _PAGE_CACHE_WC;
+       enum page_cache_mode pcm = _PAGE_CACHE_MODE_WC;
        int ret;
 
        if (!is_io_mapping_possible(base, size))
                return -EINVAL;
 
-       ret = io_reserve_memtype(base, base + size, &flag);
+       ret = io_reserve_memtype(base, base + size, &pcm);
        if (ret)
                return ret;
 
-       *prot = __pgprot(__PAGE_KERNEL | flag);
+       *prot = __pgprot(__PAGE_KERNEL | cachemode2protval(pcm));
        return 0;
 }
 EXPORT_SYMBOL_GPL(iomap_create_wc);
@@ -82,8 +82,10 @@ iomap_atomic_prot_pfn(unsigned long pfn, pgprot_t prot)
         * MTRR is UC or WC.  UC_MINUS gets the real intention, of the
         * user, which is "WC if the MTRR is WC, UC if you can't do that."
         */
-       if (!pat_enabled && pgprot_val(prot) == pgprot_val(PAGE_KERNEL_WC))
-               prot = PAGE_KERNEL_UC_MINUS;
+       if (!pat_enabled && pgprot_val(prot) ==
+           (__PAGE_KERNEL | cachemode2protval(_PAGE_CACHE_MODE_WC)))
+               prot = __pgprot(__PAGE_KERNEL |
+                               cachemode2protval(_PAGE_CACHE_MODE_UC_MINUS));
 
        return (void __force __iomem *) kmap_atomic_prot_pfn(pfn, prot);
 }