[PATCH] powerpc/pseries: in lmb_is_removable(), advance pfn if section is not present

[Pingfan Liu]

In lmb_is_removable(), if a section is not present, it should continue to
test the rest sections in the block. But the current code fails to do so.

Signed-off-by: Pingfan Liu <kernelfans at gmail.com>
Cc: Benjamin Herrenschmidt <benh at kernel.crashing.org>
Cc: Paul Mackerras <paulus at samba.org>
Cc: Michael Ellerman <mpe at ellerman.id.au>
To: linuxppc-dev at lists.ozlabs.org
---
 arch/powerpc/platforms/pseries/hotplug-memory.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/arch/powerpc/platforms/pseries/hotplug-memory.c b/arch/powerpc/platforms/pseries/hotplug-memory.c
index c126b94..a4d40a3 100644
--- a/arch/powerpc/platforms/pseries/hotplug-memory.c
+++ b/arch/powerpc/platforms/pseries/hotplug-memory.c
@@ -360,8 +360,10 @@ static bool lmb_is_removable(struct drmem_lmb *lmb)
 
 	for (i = 0; i < scns_per_block; i++) {
 		pfn = PFN_DOWN(phys_addr);
-		if (!pfn_present(pfn))
+		if (!pfn_present(pfn)) {
+			phys_addr += MIN_MEMORY_BLOCK_SIZE;
 			continue;
+		}
 
 		rc = rc && is_mem_section_removable(pfn, PAGES_PER_SECTION);
 		phys_addr += MIN_MEMORY_BLOCK_SIZE;
-- 
2.7.5