microblaze: Fix pfn_valid() for noMMU

Configuring DEBUG_SLAB causes a noMMU kernel to die during initialization with an invalid virtual address panic in kfree_debugcheck(). The panic is due to an improper definition of pfn_valid(). Signed-off-by: Steven J. Magnani <[email protected]> Signed-off-by: Michal Simek <[email protected]>
ambv · Dec 14, 2009 · 5dd48a2 · 5dd48a2
1 parent 4f911b0
commit 5dd48a2
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/arch/microblaze/include/asm/page.h b/arch/microblaze/include/asm/page.h
@@ -164,7 +164,8 @@ extern int page_is_ram(unsigned long pfn);
 #  endif /* CONFIG_MMU */
 
 #  ifndef CONFIG_MMU
-#  define pfn_valid(pfn)	((pfn) >= min_low_pfn && (pfn) <= max_mapnr)
+#  define pfn_valid(pfn)	(((pfn) >= min_low_pfn) && \
+				((pfn) <= (min_low_pfn + max_mapnr)))
 #  define ARCH_PFN_OFFSET	(PAGE_OFFSET >> PAGE_SHIFT)
 #  else /* CONFIG_MMU */
 #  define ARCH_PFN_OFFSET	(memory_start >> PAGE_SHIFT)