From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dmitry Osipenko Subject: [PATCH v2 02/19] PM / devfreq: tegra: Replace readl-writel with relaxed versions Date: Mon, 15 Apr 2019 17:54:48 +0300 Message-ID: <20190415145505.18397-3-digetx@gmail.com> References: <20190415145505.18397-1-digetx@gmail.com> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <20190415145505.18397-1-digetx@gmail.com> Sender: linux-kernel-owner@vger.kernel.org To: Thierry Reding , Jonathan Hunter , MyungJoo Ham , Kyungmin Park , Chanwoo Choi , Tomeu Vizoso Cc: linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org List-Id: linux-tegra@vger.kernel.org There is no need to insert memory barrier on each readl/writel invocation, hence use the relaxed versions. Signed-off-by: Dmitry Osipenko --- drivers/devfreq/tegra-devfreq.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/devfreq/tegra-devfreq.c b/drivers/devfreq/tegra-devfreq.c index 02905978abe1..0c0909fba545 100644 --- a/drivers/devfreq/tegra-devfreq.c +++ b/drivers/devfreq/tegra-devfreq.c @@ -191,23 +191,23 @@ static struct tegra_actmon_emc_ratio actmon_emc_ratios[] = { static u32 actmon_readl(struct tegra_devfreq *tegra, u32 offset) { - return readl(tegra->regs + offset); + return readl_relaxed(tegra->regs + offset); } static void actmon_writel(struct tegra_devfreq *tegra, u32 val, u32 offset) { - writel(val, tegra->regs + offset); + writel_relaxed(val, tegra->regs + offset); } static u32 device_readl(struct tegra_devfreq_device *dev, u32 offset) { - return readl(dev->regs + offset); + return readl_relaxed(dev->regs + offset); } static void device_writel(struct tegra_devfreq_device *dev, u32 val, u32 offset) { - writel(val, dev->regs + offset); + writel_relaxed(val, dev->regs + offset); } static unsigned long do_percent(unsigned long val, unsigned int pct) -- 2.21.0