[PATCH 04/10] mm/early_ioremap: Use offset_in_page macro

[Alexander Kuleshov <kuleshovmail@gmail.com>]

The <linux/mm.h> provides offset_in_page() macro. Let's use already
predefined macro instead of (addr & ~PAGE_MASK).

Signed-off-by: Alexander Kuleshov <kuleshovmail@gmail.com>
---
 mm/early_ioremap.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/mm/early_ioremap.c b/mm/early_ioremap.c
index 17ae14b..6d5717b 100644
--- a/mm/early_ioremap.c
+++ b/mm/early_ioremap.c
@@ -126,7 +126,7 @@ __early_ioremap(resource_size_t phys_addr, unsigned long size, pgprot_t prot)
 	/*
 	 * Mappings have to be page-aligned
 	 */
-	offset = phys_addr & ~PAGE_MASK;
+	offset = offset_in_page(phys_addr);
 	phys_addr &= PAGE_MASK;
 	size = PAGE_ALIGN(last_addr + 1) - phys_addr;
 
@@ -189,7 +189,7 @@ void __init early_iounmap(void __iomem *addr, unsigned long size)
 	if (WARN_ON(virt_addr < fix_to_virt(FIX_BTMAP_BEGIN)))
 		return;
 
-	offset = virt_addr & ~PAGE_MASK;
+	offset = offset_in_page(virt_addr);
 	nrpages = PAGE_ALIGN(offset + size) >> PAGE_SHIFT;
 
 	idx = FIX_BTMAP_BEGIN - NR_FIX_BTMAPS*slot;
@@ -234,7 +234,7 @@ void __init copy_from_early_mem(void *dest, phys_addr_t src, unsigned long size)
 	char *p;
 
 	while (size) {
-		slop = src & ~PAGE_MASK;
+		slop = offset_in_page(src);
 		clen = size;
 		if (clen > MAX_MAP_CHUNK - slop)
 			clen = MAX_MAP_CHUNK - slop;
-- 
2.5.0

--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org.  For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>