[arm] preserve previous content of fpexc

2012-05-27 23:30:28 +05:30
parent 5c8b5da7fd
commit 37db55b28f
1 changed files with 2 additions and 1 deletions
--- a/arch/arm/arm/arch.c
+++ b/arch/arm/arm/arch.c
@@ -61,7 +61,8 @@ void arch_early_init(void)
 	__asm__ volatile("mcr	p15, 0, %0, c1, c0, 2" :: "r" (val));

 	/* set enable bit in fpexc */
-	val = (1<<30);
+	__asm__ volatile("mrc  p10, 7, %0, c8, c0, 0" : "=r" (val));
+	val |= (1<<30);
 	__asm__ volatile("mcr  p10, 7, %0, c8, c0, 0" :: "r" (val));
 #endif