Subject: [PATCH] powerpc/mm/hugetlb: Don't panic if we don't find the default huge page size

From: "Aneesh Kumar K.V" <[email-masked]>
Date: Tue, 13 Dec 2016 19:34:11 +0530

generic hugetlbfs can handle that condition correctly. With HPAGE_SHIFT = 0
we get
[0.241333] hugetlbfs: disabling because there are no supported hugepage sizes

bash-4.2# echo 30 > /proc/sys/vm/nr_hugepages
bash: echo: write error: Operation not supported

Fixes: "powerpc: get hugetlbpage handling more generic"
Reported-by: Chris Smart <[email-masked]>
Signed-off-by: Aneesh Kumar K.V <[email-masked]>
---
 arch/powerpc/mm/hugetlbpage.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c
index 289df38fb7e0..e46bbd716832 100644
--- a/arch/powerpc/mm/hugetlbpage.c
+++ b/arch/powerpc/mm/hugetlbpage.c
@@ -852,9 +852,6 @@ static int __init hugetlbpage_init(void)
 	else if (mmu_psize_defs[MMU_PAGE_2M].shift)
 		HPAGE_SHIFT = mmu_psize_defs[MMU_PAGE_2M].shift;
 #endif
-	else
-		panic("%s: Unable to set default huge page size\n", __func__);
-
 	return 0;
 }
 
-- 
2.10.2