From: Russell King Date: Thu, 1 Sep 2011 10:57:59 +0000 (+0100) Subject: ARM: pm: add L2 cache cleaning for suspend X-Git-Tag: next-20110912~101^2~2^7 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=67ecbbd282a62bc3e514e6f7c9dab33913927e77;p=karo-tx-linux.git 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 --- 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)); } /*