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-rw-r--r--arch/x86/mm/ioremap.c17
1 files changed, 3 insertions, 14 deletions
diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
index 8a450930834..aeaea8c5b2f 100644
--- a/arch/x86/mm/ioremap.c
+++ b/arch/x86/mm/ioremap.c
@@ -228,24 +228,13 @@ 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(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),