MIPS: bootmem: Fix mapstart calculation for contiguous maps

[linux-drm-fsl-dcu.git] / arch / mips / kernel / setup.c

diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index 008b3378653a004b5cd2890445b6d23c250ca1f5..479515109e5badec96942ee594e3a450ab011f11 100644 (file)
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -338,7 +338,7 @@ static void __init bootmem_init(void)
                if (end <= reserved_end)
                        continue;
 #ifdef CONFIG_BLK_DEV_INITRD
-               /* mapstart should be after initrd_end */
+               /* Skip zones before initrd and initrd itself */
                if (initrd_end && end <= (unsigned long)PFN_UP(__pa(initrd_end)))
                        continue;
 #endif
@@ -371,6 +371,14 @@ static void __init bootmem_init(void)
                max_low_pfn = PFN_DOWN(HIGHMEM_START);
        }
 
+#ifdef CONFIG_BLK_DEV_INITRD
+       /*
+        * mapstart should be after initrd_end
+        */
+       if (initrd_end)
+               mapstart = max(mapstart, (unsigned long)PFN_UP(__pa(initrd_end)));
+#endif
+
        /*
         * Initialize the boot-time allocator with low memory only.
         */
@@ -476,7 +484,7 @@ static void __init bootmem_init(void)
  *  o bootmem_init()
  *  o sparse_init()
  *  o paging_init()
- *  o dma_continguous_reserve()
+ *  o dma_contiguous_reserve()
  *
  * At this stage the bootmem allocator is ready to use.
  *