From 67b24970cef90b6d230e370cce9db8c29b2f4d74 Mon Sep 17 00:00:00 2001 From: Bin Meng Date: Mon, 25 May 2015 22:35:07 +0800 Subject: x86: Do sanity test on pirq table before writing If pirq_routing_table points to NULL, that means U-Boot fails to generate the table before in create_pirq_routing_table(), so we test it against NULL before actually writing it. Signed-off-by: Bin Meng Acked-by: Simon Glass --- arch/x86/cpu/irq.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/x86/cpu/irq.c b/arch/x86/cpu/irq.c index d1711af8f8..74b89ad2ff 100644 --- a/arch/x86/cpu/irq.c +++ b/arch/x86/cpu/irq.c @@ -209,5 +209,8 @@ void pirq_init(void) u32 write_pirq_routing_table(u32 addr) { + if (!pirq_routing_table) + return addr; + return copy_pirq_routing_table(addr, pirq_routing_table); } -- cgit