1 files changed, 4 insertions, 14 deletions

diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
index 04e1ad60c63..334e63ca7b2 100644
--- a/arch/x86/mm/ioremap.c
+++ b/arch/x86/mm/ioremap.c
@@ -158,24 +158,14 @@ static void __iomem *__ioremap_caller(resource_size_t phys_addr,
         retval = reserve_memtype(phys_addr, (u64)phys_addr + size,
                                                 prot_val, &new_prot_val);
         if (retval) {
-                pr_debug("Warning: reserve_memtype returned %d\n", retval);
+                printk(KERN_ERR "ioremap reserve_memtype failed %d\n", retval);
                 return NULL;
         }
 
         if (prot_val != new_prot_val) {
-                /*
-                 * Do not fallback to certain memory types with certain
-                 * requested type:
-                 * - request is uc-, return cannot be write-back
-                 * - request is uc-, return cannot be write-combine
-                 * - request is write-combine, return cannot be write-back
-                 */
-                if ((prot_val == _PAGE_CACHE_UC_MINUS &&
-                     (new_prot_val == _PAGE_CACHE_WB ||
-                      new_prot_val == _PAGE_CACHE_WC)) ||
-                    (prot_val == _PAGE_CACHE_WC &&
-                     new_prot_val == _PAGE_CACHE_WB)) {
-                        pr_debug(
+                if (!is_new_memtype_allowed(phys_addr, size,
+                                            prot_val, new_prot_val)) {
+                        printk(KERN_ERR
                 "ioremap error for 0x%llx-0x%llx, requested 0x%lx, got 0x%lx\n",
                                 (unsigned long long)phys_addr,
                                 (unsigned long long)(phys_addr + size),