Gitweb: http://git.kernel.org/linus/baf922780251d12bc1c24c83df60c4c278abb745
Commit: baf922780251d12bc1c24c83df60c4c278abb745
Parent: 01a6221a6a51ec47b9ae3ed42c396f98dd488c7e
Author: Ralf Baechle <ralf@linux-mips.org>
AuthorDate: Fri Jul 3 07:11:15 2009 +0100
Committer: Ralf Baechle <ralf@linux-mips.org>
CommitDate: Fri Jul 3 15:45:29 2009 +0100
MIPS: Fix CONFIG_FLATMEM version of pfn_valid()
For systems which do not define PHYS_OFFSET as 0 pfn_valid() may falsely
have returned 0 on most configurations. Bug introduced by commit
752fbeb2e3555c0d236e992f1195fd7ce30e728d (linux-mips.org) rsp.
6f284a2ce7b8bc49cb8455b1763357897a899abb (kernel.org) titled "[MIPS]
FLATMEM: introduce PHYS_OFFSET."
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---
arch/mips/include/asm/page.h | 9 ++++++++-
1 files changed, 8 insertions(+), 1 deletions(-)
diff --git a/arch/mips/include/asm/page.h b/arch/mips/include/asm/page.h
index dc0eaa7..96a14a4 100644
--- a/arch/mips/include/asm/page.h
+++ b/arch/mips/include/asm/page.h
@@ -165,7 +165,14 @@ typedef struct { unsigned long pgprot; } pgprot_t;
#ifdef CONFIG_FLATMEM
-#define pfn_valid(pfn) ((pfn) >= ARCH_PFN_OFFSET && (pfn) < max_mapnr)
+#define pfn_valid(pfn) \
+({ \
+ unsigned long __pfn = (pfn); \
+ /* avoid <linux/bootmem.h> include hell */ \
+ extern unsigned long min_low_pfn; \
+ \
+ __pfn >= min_low_pfn && __pfn < max_mapnr; \
+})
#elif defined(CONFIG_SPARSEMEM)
--
To unsubscribe from this list: send the line "unsubscribe git-commits-head" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
