This hack, introduced in commit c5df7f775148 ("powerpc: allow ioremap
within reserved memory regions") is now unnecessary.
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@xxxxxxx>
---
arch/powerpc/mm/init_32.c | 5 -----
arch/powerpc/mm/mmu_decl.h | 1 -
arch/powerpc/mm/pgtable_32.c | 3 +--
3 files changed, 1 insertion(+), 8 deletions(-)
diff --git a/arch/powerpc/mm/init_32.c b/arch/powerpc/mm/init_32.c
index 6419b33ca309..326240177fa6 100644
--- a/arch/powerpc/mm/init_32.c
+++ b/arch/powerpc/mm/init_32.c
@@ -88,11 +88,6 @@ void MMU_init(void);
int __map_without_bats;
int __map_without_ltlbs;
-/*
- * This tells the system to allow ioremapping memory marked as reserved.
- */
-int __allow_ioremap_reserved;
-
/* max amount of low RAM to map in */
unsigned long __max_low_memory = MAX_LOW_MEM;
diff --git a/arch/powerpc/mm/mmu_decl.h b/arch/powerpc/mm/mmu_decl.h
index 57fbc554c785..c4c0a09a7775 100644
--- a/arch/powerpc/mm/mmu_decl.h
+++ b/arch/powerpc/mm/mmu_decl.h
@@ -98,7 +98,6 @@ extern void setbat(int index, unsigned long virt, phys_addr_t phys,
unsigned int size, pgprot_t prot);
extern int __map_without_bats;
-extern int __allow_ioremap_reserved;
extern unsigned int rtas_data, rtas_size;
struct hash_pte;
diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c
index d54e1a9c1c99..a89eb3b898cd 100644
--- a/arch/powerpc/mm/pgtable_32.c
+++ b/arch/powerpc/mm/pgtable_32.c
@@ -146,8 +146,7 @@ __ioremap_caller(phys_addr_t addr, unsigned long size, unsigned long flags,
/*
* Don't allow anybody to remap normal RAM that we're using.
*/
- if (page_is_ram(__phys_to_pfn(p)) &&
- !(__allow_ioremap_reserved && memblock_is_region_reserved(p, size))) {
+ if (page_is_ram(__phys_to_pfn(p))) {
printk("__ioremap(): phys addr 0x%llx is RAM lr %ps\n",
(unsigned long long)p, __builtin_return_address(0));
return NULL;
--
2.16.1
--
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