From patchwork Mon Jun 13 17:16:11 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: 875822 Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) by demeter1.kernel.org (8.14.4/8.14.4) with ESMTP id p5DHGSgS017528 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Mon, 13 Jun 2011 17:16:49 GMT Received: from canuck.infradead.org ([2001:4978:20e::1]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1QWAkP-0005NX-Hy; Mon, 13 Jun 2011 17:16:22 +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 1QWAkP-0002WK-2z; Mon, 13 Jun 2011 17:16:21 +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 1QWAkL-0002W1-9b for linux-arm-kernel@lists.infradead.org; Mon, 13 Jun 2011 17:16:18 +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=qx2O1lXltwLhGkJbIwsR9Ao/o69POK1/JEo5V27KZEI=; b=X/Gvk+52U7pC4yZNnaDES/mhjb0xtNlS/KZ8UEn7QyH0+sLnSyL5G2EiUKQbyXxCYPmfZx07+Z6WeELZkF6l449DYmsJ8WF6yadPLearAVWveW/m/KiCuhNceMVnIenFtMIoqNtsshmvkz8qwXiDBaho1y5Mh54R2t1aQvQQrL8=; 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 1QWAkH-0001cT-4P for linux-arm-kernel@lists.infradead.org; Mon, 13 Jun 2011 18:16:13 +0100 Received: from rmk by rmk-PC.arm.linux.org.uk with local (Exim 4.76) (envelope-from ) id 1QWAkF-0002dv-7i for linux-arm-kernel@lists.infradead.org; Mon, 13 Jun 2011 18:16:11 +0100 In-Reply-To: <20110613171446.GF13643@n2100.arm.linux.org.uk> References: <20110613171446.GF13643@n2100.arm.linux.org.uk> From: Russell King - ARM Linux To: linux-arm-kernel@lists.infradead.org Subject: [PATCH 04/14] ARM: suspend: preserve r4 - r11 across a suspend MIME-Version: 1.0 Content-Disposition: inline Message-Id: Date: Mon, 13 Jun 2011 18:16:11 +0100 X-CRM114-Version: 20090807-BlameThorstenAndJenny ( TRE 0.7.6 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20110613_131617_914404_D34F2320 X-CRM114-Status: GOOD ( 12.23 ) 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 (demeter1.kernel.org [140.211.167.41]); Mon, 13 Jun 2011 17:16:49 +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. 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) /*