[PATCH 1/4] m68k/mm: motorola - Add missing initialization of max_pfn

Geert Uytterhoeven
2015-11-15T11:43:13Z

If max_pfn is not initialized, the various /proc/kpage* files are empty,
and selftests/vm/mlock2-tests will fail. max_pfn is also used by the
block layer to calculate DMA masks.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
---
arch/m68k/mm/motorola.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/m68k/mm/motorola.c b/arch/m68k/mm/motorola.c
index b958916e5eac96b2..8f37fdd80be9e9cc 100644
--- a/arch/m68k/mm/motorola.c
+++ b/arch/m68k/mm/motorola.c
@@ -250,7 +250,7 @@ void __init paging_init(void)
high_memory = phys_to_virt(max_addr);

min_low_pfn = availmem >> PAGE_SHIFT;
- max_low_pfn = max_addr >> PAGE_SHIFT;
+ max_pfn = max_low_pfn = max_addr >> PAGE_SHIFT;

for (i = 0; i < m68k_num_memory; i++) {
addr = m68k_memory[i].addr;
--
1.9.1