From patchwork Sat Mar 5 12:26:05 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 8510261 Return-Path: X-Original-To: patchwork-linux-spi@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 77396C0553 for ; Sat, 5 Mar 2016 12:26:35 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id A71FD2017E for ; Sat, 5 Mar 2016 12:26:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BA7DA20274 for ; Sat, 5 Mar 2016 12:26:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760774AbcCEM03 (ORCPT ); Sat, 5 Mar 2016 07:26:29 -0500 Received: from mezzanine.sirena.org.uk ([106.187.55.193]:35342 "EHLO mezzanine.sirena.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760762AbcCEM0I (ORCPT ); Sat, 5 Mar 2016 07:26:08 -0500 Received: from 110-170-137-3.static.asianet.co.th ([110.170.137.3] helo=finisterre) by mezzanine.sirena.org.uk with esmtpsa (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.80) (envelope-from ) id 1acBHa-0001Xs-BH; Sat, 05 Mar 2016 12:26:07 +0000 Received: from broonie by finisterre with local (Exim 4.86) (envelope-from ) id 1acBHZ-0003XE-1H; Sat, 05 Mar 2016 21:26:05 +0900 From: Mark Brown To: Huibin Hong , Mark Brown Cc: linux-spi@vger.kernel.org In-Reply-To: Message-Id: Date: Sat, 05 Mar 2016 21:26:05 +0900 X-SA-Exim-Connect-IP: 110.170.137.3 X-SA-Exim-Mail-From: broonie@sirena.org.uk X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Subject: Applied "spi/rockchip: Make sure spi clk is on in rockchip_spi_set_cs" to the spi tree X-SA-Exim-Version: 4.2.1 (built Mon, 26 Dec 2011 16:24:06 +0000) X-SA-Exim-Scanned: Yes (on mezzanine.sirena.org.uk) Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The patch spi/rockchip: Make sure spi clk is on in rockchip_spi_set_cs has been applied to the spi tree at git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted. You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed. If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced. Please add any relevant lists and maintainers to the CCs when replying to this mail. Thanks, Mark From b920cc3191d7612f26f36ee494e05b5ffd9044c0 Mon Sep 17 00:00:00 2001 From: Huibin Hong Date: Wed, 24 Feb 2016 18:00:04 +0800 Subject: [PATCH] spi/rockchip: Make sure spi clk is on in rockchip_spi_set_cs Rockchip_spi_set_cs could be called by spi_setup, but spi_setup may be called by device driver after runtime suspend. Then the spi clock is closed, rockchip_spi_set_cs may access the spi registers, which causes cpu block in some socs. Fixes: 64e36824b32 ("spi/rockchip: add driver for Rockchip RK3xxx") Signed-off-by: Huibin Hong Signed-off-by: Mark Brown --- drivers/spi/spi-rockchip.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi-rockchip.c b/drivers/spi/spi-rockchip.c index 07c082aa5cff..6cdb4d81d66c 100644 --- a/drivers/spi/spi-rockchip.c +++ b/drivers/spi/spi-rockchip.c @@ -263,7 +263,10 @@ static inline u32 rx_max(struct rockchip_spi *rs) static void rockchip_spi_set_cs(struct spi_device *spi, bool enable) { u32 ser; - struct rockchip_spi *rs = spi_master_get_devdata(spi->master); + struct spi_master *master = spi->master; + struct rockchip_spi *rs = spi_master_get_devdata(master); + + pm_runtime_get_sync(rs->dev); ser = readl_relaxed(rs->regs + ROCKCHIP_SPI_SER) & SER_MASK; @@ -288,6 +291,8 @@ static void rockchip_spi_set_cs(struct spi_device *spi, bool enable) ser &= ~(1 << spi->chip_select); writel_relaxed(ser, rs->regs + ROCKCHIP_SPI_SER); + + pm_runtime_put_sync(rs->dev); } static int rockchip_spi_prepare_message(struct spi_master *master,