From 67ecbbd282a62bc3e514e6f7c9dab33913927e77 Mon Sep 17 00:00:00 2001 From: Russell King Date: Thu, 1 Sep 2011 11:57:59 +0100 Subject: [PATCH] ARM: pm: add L2 cache cleaning for suspend We need to ensure that state is pushed out from the L2 cache when suspending so that the resume paths can access their data before the MMU and caches have been re-initialized. Add the necessary calls to __cpu_suspend_save(). Tested-by: Santosh Shilimkar Signed-off-by: Russell King --- arch/arm/kernel/suspend.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/arm/kernel/suspend.c b/arch/arm/kernel/suspend.c index c78a88f10a82..4c9541032fcd 100644 --- a/arch/arm/kernel/suspend.c +++ b/arch/arm/kernel/suspend.c @@ -28,6 +28,9 @@ void __cpu_suspend_save(u32 *ptr, u32 ptrsz, u32 sp, u32 *save_ptr) cpu_do_suspend(ptr); flush_cache_all(); + outer_clean_range(*save_ptr, *save_ptr + ptrsz); + outer_clean_range(virt_to_phys(save_ptr), + virt_to_phys(save_ptr) + sizeof(*save_ptr)); } /* -- 2.39.2