From: Russell King <rmk+kernel@arm.linux.org.uk>
Date: Tue, 16 Nov 2010 00:16:01 +0000 (+0000)
Subject: ARM: pgtable: use phys_addr_t for physical addresses
X-Git-Tag: firefly_0821_release~7613^2~1828^2~2^3~15
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=97092e0c56830457af0639f6bd904537a150ea4a;p=firefly-linux-kernel-4.4.55.git

ARM: pgtable: use phys_addr_t for physical addresses

Ensure that physical addresses are typed as phys_addr_t

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---

diff --git a/arch/arm/include/asm/pgalloc.h b/arch/arm/include/asm/pgalloc.h
index e9c39352cee1..1f1064b519c0 100644
--- a/arch/arm/include/asm/pgalloc.h
+++ b/arch/arm/include/asm/pgalloc.h
@@ -103,8 +103,10 @@ static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
 	__free_page(pte);
 }
 
-static inline void __pmd_populate(pmd_t *pmdp, unsigned long pmdval)
+static inline void __pmd_populate(pmd_t *pmdp, phys_addr_t pte,
+	unsigned long prot)
 {
+	unsigned long pmdval = pte | prot;
 	pmdp[0] = __pmd(pmdval);
 	pmdp[1] = __pmd(pmdval + 256 * sizeof(pte_t));
 	flush_pmd_entry(pmdp);
@@ -126,13 +128,13 @@ pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmdp, pte_t *ptep)
 	 * address of the PTE table
 	 */
 	pte_ptr -= PTRS_PER_PTE * sizeof(void *);
-	__pmd_populate(pmdp, __pa(pte_ptr) | _PAGE_KERNEL_TABLE);
+	__pmd_populate(pmdp, __pa(pte_ptr), _PAGE_KERNEL_TABLE);
 }
 
 static inline void
 pmd_populate(struct mm_struct *mm, pmd_t *pmdp, pgtable_t ptep)
 {
-	__pmd_populate(pmdp, page_to_pfn(ptep) << PAGE_SHIFT | _PAGE_USER_TABLE);
+	__pmd_populate(pmdp, page_to_phys(ptep), _PAGE_USER_TABLE);
 }
 #define pmd_pgtable(pmd) pmd_page(pmd)
 
diff --git a/arch/arm/include/asm/pgtable.h b/arch/arm/include/asm/pgtable.h
index d00ef7ecee64..30b3a07dd998 100644
--- a/arch/arm/include/asm/pgtable.h
+++ b/arch/arm/include/asm/pgtable.h
@@ -322,7 +322,7 @@ extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
 
 static inline pte_t *pmd_page_vaddr(pmd_t pmd)
 {
-	unsigned long ptr;
+	phys_addr_t ptr;
 
 	ptr = pmd_val(pmd) & ~(PTRS_PER_PTE * sizeof(void *) - 1);
 	ptr += PTRS_PER_PTE * sizeof(void *);
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index 72ad3e1f56cf..9568f8632ae3 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -535,7 +535,7 @@ static pte_t * __init early_pte_alloc(pmd_t *pmd, unsigned long addr, unsigned l
 {
 	if (pmd_none(*pmd)) {
 		pte_t *pte = early_alloc(2 * PTRS_PER_PTE * sizeof(pte_t));
-		__pmd_populate(pmd, __pa(pte) | prot);
+		__pmd_populate(pmd, __pa(pte), prot);
 	}
 	BUG_ON(pmd_bad(*pmd));
 	return pte_offset_kernel(pmd, addr);
@@ -553,7 +553,7 @@ static void __init alloc_init_pte(pmd_t *pmd, unsigned long addr,
 }
 
 static void __init alloc_init_section(pgd_t *pgd, unsigned long addr,
-				      unsigned long end, unsigned long phys,
+				      unsigned long end, phys_addr_t phys,
 				      const struct mem_type *type)
 {
 	pmd_t *pmd = pmd_offset(pgd, addr);
@@ -588,7 +588,8 @@ static void __init alloc_init_section(pgd_t *pgd, unsigned long addr,
 static void __init create_36bit_mapping(struct map_desc *md,
 					const struct mem_type *type)
 {
-	unsigned long phys, addr, length, end;
+	unsigned long addr, length, end;
+	phys_addr_t phys;
 	pgd_t *pgd;
 
 	addr = md->virtual;