Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933651AbbBQK0C (ORCPT ); Tue, 17 Feb 2015 05:26:02 -0500 Received: from down.free-electrons.com ([37.187.137.238]:33357 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S933636AbbBQK0A (ORCPT ); Tue, 17 Feb 2015 05:26:00 -0500 Date: Tue, 17 Feb 2015 11:25:59 +0100 From: Alexandre Belloni To: Wenyou Yang Cc: nicolas.ferre@atmel.com, linux@maxim.org.za, linux@arm.linux.org.uk, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, sylvain.rochet@finsecur.com, patrice.vilchez@atmel.com, sergei.shtylyov@cogentembedded.com, mark.rutland@arm.com, lorenzo.pieralisi@arm.com Subject: Re: [PATCH 3/3] pm: at91: flush data cache and clean, invalidate and disable the L2 cache Message-ID: <20150217102559.GD11529@piout.net> References: <1423709441-8342-1-git-send-email-wenyou.yang@atmel.com> <1423709578-8475-1-git-send-email-wenyou.yang@atmel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1423709578-8475-1-git-send-email-wenyou.yang@atmel.com> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1560 Lines: 50 On 12/02/2015 at 10:52:58 +0800, Wenyou Yang wrote : > Flush data cache, and clean, invalidate and disable the L2 cache before going to suspend. > Restore the L2 cache configuration and re-enable the L2 cache after waking up. > > Signed-off-by: Wenyou Yang Acked-by: Alexandre Belloni > --- > arch/arm/mach-at91/pm.c | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c > index 9075b41..2574bad 100644 > --- a/arch/arm/mach-at91/pm.c > +++ b/arch/arm/mach-at91/pm.c > @@ -30,6 +30,7 @@ > #include > #include > #include > +#include > > #include > #include > @@ -145,8 +146,13 @@ static void at91_pm_suspend(suspend_state_t state) > pm_data |= (state == PM_SUSPEND_MEM) ? > AT91_PM_MODE(AT91_PM_SLOW_CLOCK) : 0; > > + flush_cache_all(); > + outer_disable(); > + > at91_suspend_sram_fn(at91_pmc_base, at91_ramc_base[0], > at91_ramc_base[1], pm_data); > + > + outer_resume(); > } > > static int at91_pm_enter(suspend_state_t state) > -- > 1.7.9.5 > -- Alexandre Belloni, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/