From patchwork Thu Jun 23 19:11:23 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Russell King - ARM Linux X-Patchwork-Id: 913092 Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) by demeter2.kernel.org (8.14.4/8.14.4) with ESMTP id p5NJCLrF011999 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Thu, 23 Jun 2011 19:12:42 GMT Received: from canuck.infradead.org ([2001:4978:20e::1]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1QZpJd-0001AC-1Q; Thu, 23 Jun 2011 19:11:49 +0000 Received: from localhost ([127.0.0.1] helo=canuck.infradead.org) by canuck.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1QZpJc-0004Ot-C4; Thu, 23 Jun 2011 19:11:48 +0000 Received: from [2002:4e20:1eda::1] (helo=caramon.arm.linux.org.uk) by canuck.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1QZpJH-0004Ki-VY for linux-arm-kernel@lists.infradead.org; Thu, 23 Jun 2011 19:11:29 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=arm.linux.org.uk; s=caramon; h=Date:Sender:Message-Id:Content-Type:MIME-Version:Subject:To:From:References:In-Reply-To; bh=iqxDRaSVyh+LN7tTGjV4+PxovpRfRNfl/+JIVMcfkvg=; b=IWgb9kBdyVqJbufTJ4UR170RFl6anC2smGOXLvwVisN5gfFXiocfhjlQh77wJT0SWbyy+fs2m9CyQy5JqXStVcA18dJEVBqgrLEbFWmZ0WdD4ozaNtxNkpw/0/KsOzrKI5wOuSlJGKoeBeSX83AL8b1m7it0lznhmqMQFHzv1wM=; Received: from e0022681537dd.dyn.arm.linux.org.uk ([2002:4e20:1eda:1:222:68ff:fe15:37dd] helo=rmk-PC.arm.linux.org.uk) by caramon.arm.linux.org.uk with esmtpsa (TLSv1:AES256-SHA:256) (Exim 4.72) (envelope-from ) id 1QZpJE-0005UO-JH; Thu, 23 Jun 2011 20:11:24 +0100 Received: from rmk by rmk-PC.arm.linux.org.uk with local (Exim 4.76) (envelope-from ) id 1QZpJD-0005m7-LO; Thu, 23 Jun 2011 20:11:23 +0100 In-Reply-To: <20110623190900.GH9449@n2100.arm.linux.org.uk> References: <20110623190900.GH9449@n2100.arm.linux.org.uk> From: Russell King - ARM Linux To: linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-omap@vger.kernel.org Subject: [PATCH 07/25] ARM: pm: preserve r4 - r11 across a suspend MIME-Version: 1.0 Content-Disposition: inline Message-Id: Date: Thu, 23 Jun 2011 20:11:23 +0100 X-CRM114-Version: 20090807-BlameThorstenAndJenny ( TRE 0.7.6 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20110623_151128_688949_5B021C7B X-CRM114-Status: GOOD ( 12.71 ) X-Spam-Score: 1.2 (+) X-Spam-Report: SpamAssassin version 3.3.1 on canuck.infradead.org summary: Content analysis details: (1.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 1.3 RDNS_NONE Delivered to internal network by a host with no rDNS X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-arm-kernel-bounces@lists.infradead.org Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.6 (demeter2.kernel.org [140.211.167.43]); Thu, 23 Jun 2011 19:12:43 +0000 (UTC) Make cpu_suspend()..return function preserve r4 to r11 across a suspend cycle. This is in preparation of relieving platform support code from this task. Acked-by: Frank Hofmann Signed-off-by: Russell King --- arch/arm/kernel/sleep.S | 5 +++-- 1 files changed, 3 insertions(+), 2 deletions(-) diff --git a/arch/arm/kernel/sleep.S b/arch/arm/kernel/sleep.S index 0a778c3..8dbca93 100644 --- a/arch/arm/kernel/sleep.S +++ b/arch/arm/kernel/sleep.S @@ -12,10 +12,11 @@ * r1 = v:p offset * r3 = virtual return function * Note: sp is decremented to allocate space for CPU state on stack - * r0-r3,r9,r10,lr corrupted + * r0-r3,ip,lr corrupted */ ENTRY(cpu_suspend) stmfd sp!, {r3} + stmfd sp!, {r4 - r11} mov r9, lr #ifdef MULTI_CPU ldr r10, =processor @@ -88,7 +89,7 @@ ENDPROC(cpu_resume_turn_mmu_on) cpu_resume_after_mmu: str r5, [r2, r4, lsl #2] @ restore old mapping mcr p15, 0, r0, c1, c0, 0 @ turn on D-cache - ldmfd sp!, {pc} + ldmfd sp!, {r4 - r11, pc} ENDPROC(cpu_resume_after_mmu) /*