From: Alexander Kuleshov Date: Fri, 6 Nov 2015 02:46:40 +0000 (-0800) Subject: mm/early_ioremap: use offset_in_page macro X-Git-Tag: firefly_0821_release~176^2~776^2~100 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=5d57b0146aa942b939bbd77e09130270dc9b97d2;p=firefly-linux-kernel-4.4.55.git mm/early_ioremap: use offset_in_page macro linux/mm.h provides offset_in_page() macro. Let's use already predefined macro instead of (addr & ~PAGE_MASK). Signed-off-by: Alexander Kuleshov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/mm/early_ioremap.c b/mm/early_ioremap.c index 17ae14b5aefa..6d5717bd7197 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;