summaryrefslogtreecommitdiffstats
path: root/arch/powerpc/include/asm/page.h
diff options
context:
space:
mode:
authorScott Wood <scottwood@freescale.com>2011-01-27 11:31:38 +0100
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2011-02-07 02:47:56 +0100
commit81c386cc7f4c22b81ba94709d2d58754282ea05e (patch)
treeec6f38c51a46e61480b3e53eb1e6ae01bd25c188 /arch/powerpc/include/asm/page.h
parentMerge branch 'ixp4xx' of git://git.kernel.org/pub/scm/linux/kernel/git/chris/... (diff)
downloadlinux-81c386cc7f4c22b81ba94709d2d58754282ea05e.tar.xz
linux-81c386cc7f4c22b81ba94709d2d58754282ea05e.zip
powerpc: Fix pfn_valid() when memory starts at a non-zero address
max_mapnr is a pfn, not an index innto mem_map[]. So don't add ARCH_PFN_OFFSET a second time. Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include/asm/page.h')
-rw-r--r--arch/powerpc/include/asm/page.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/page.h b/arch/powerpc/include/asm/page.h
index 53b64be40eb2..da4b20008541 100644
--- a/arch/powerpc/include/asm/page.h
+++ b/arch/powerpc/include/asm/page.h
@@ -101,7 +101,7 @@ extern phys_addr_t kernstart_addr;
#ifdef CONFIG_FLATMEM
#define ARCH_PFN_OFFSET (MEMORY_START >> PAGE_SHIFT)
-#define pfn_valid(pfn) ((pfn) >= ARCH_PFN_OFFSET && (pfn) < (ARCH_PFN_OFFSET + max_mapnr))
+#define pfn_valid(pfn) ((pfn) >= ARCH_PFN_OFFSET && (pfn) < max_mapnr)
#endif
#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)