ARM: 8550/1: protect idiv patching against undefined gcc behavior

[sfrench/cifs-2.6.git] / arch / arm / kernel / setup.c

diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 139791ed473d5264682c004ea2ea7af8ddd28f5d..a28fce0bdbbe11b7a950a3a0943f8362d7124b87 100644 (file)
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -430,11 +430,13 @@ static void __init patch_aeabi_idiv(void)
        pr_info("CPU: div instructions available: patching division code\n");
 
        fn_addr = ((uintptr_t)&__aeabi_uidiv) & ~1;
+       asm ("" : "+g" (fn_addr));
        ((u32 *)fn_addr)[0] = udiv_instruction();
        ((u32 *)fn_addr)[1] = bx_lr_instruction();
        flush_icache_range(fn_addr, fn_addr + 8);
 
        fn_addr = ((uintptr_t)&__aeabi_idiv) & ~1;
+       asm ("" : "+g" (fn_addr));
        ((u32 *)fn_addr)[0] = sdiv_instruction();
        ((u32 *)fn_addr)[1] = bx_lr_instruction();
        flush_icache_range(fn_addr, fn_addr + 8);