From 4c2b5e0fab602b468ce4d8c4d78c99f2caa79a3e Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Sun, 10 Sep 2017 15:20:03 +0200 Subject: [PATCH] m68k: Add braces to __pmd(x) initializer to kill compiler warning MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit With gcc 4.1.2: include/linux/swapops.h: In function ‘swp_entry_to_pmd’: include/linux/swapops.h:294: warning: missing braces around initializer include/linux/swapops.h:294: warning: (near initialization for ‘(anonymous).pmd’) Due to a GCC zero initializer bug (#53119), the standard "(pmd_t){ 0 }" initializer is not accepted by all GCC versions. In addition, on m68k pmd_t is an array instead of a single value, so we need "(pmd_t){ { 0 }, }" instead of "(pmd_t){ 0 }". Based on commit 9157259d16a8 ("mm: add pmd_t initializer __pmd() to work around a GCC bug.") for sparc32. Fixes: 616b8371539a ("mm: thp: enable thp migration in generic path") Signed-off-by: Geert Uytterhoeven Signed-off-by: Linus Torvalds --- arch/m68k/include/asm/page.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/m68k/include/asm/page.h b/arch/m68k/include/asm/page.h index 430d4d5..d8a02c7 100644 --- a/arch/m68k/include/asm/page.h +++ b/arch/m68k/include/asm/page.h @@ -32,7 +32,7 @@ typedef struct page *pgtable_t; #define pgprot_val(x) ((x).pgprot) #define __pte(x) ((pte_t) { (x) } ) -#define __pmd(x) ((pmd_t) { (x) } ) +#define __pmd(x) ((pmd_t) { { (x) }, }) #define __pgd(x) ((pgd_t) { (x) } ) #define __pgprot(x) ((pgprot_t) { (x) } ) -- 2.7.4