From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thierry Reding Subject: [PATCH 3/5] i2c: tegra: Keep IRQs enabled during suspend/resume Date: Wed, 6 May 2020 21:33:56 +0200 Message-ID: <20200506193358.2807244-4-thierry.reding@gmail.com> References: <20200506193358.2807244-1-thierry.reding@gmail.com> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <20200506193358.2807244-1-thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> Sender: linux-tegra-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Wolfram Sang Cc: Dmitry Osipenko , Jon Hunter , linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-tegra@vger.kernel.org From: Thierry Reding One of the I2C controllers on Tegra SoCs is typically connected to a system PMIC, which provides controls for critical power supplies for most platforms. Some drivers, such as PCI, need to disable these regulators during a very late stage during suspend and resume them at a very early stage during resume. To support these use-cases, keep interrupts disabled during suspend/ resume. Suggested-by: Dmitry Osipenko Signed-off-by: Thierry Reding --- drivers/i2c/busses/i2c-tegra.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c index db142d897604..8d2a212db733 100644 --- a/drivers/i2c/busses/i2c-tegra.c +++ b/drivers/i2c/busses/i2c-tegra.c @@ -1694,8 +1694,8 @@ static int tegra_i2c_probe(struct platform_device *pdev) irq_set_status_flags(i2c_dev->irq, IRQ_NOAUTOEN); - ret = devm_request_irq(&pdev->dev, i2c_dev->irq, - tegra_i2c_isr, 0, dev_name(&pdev->dev), i2c_dev); + ret = devm_request_irq(&pdev->dev, i2c_dev->irq, tegra_i2c_isr, + IRQF_NO_SUSPEND, dev_name(&pdev->dev), i2c_dev); if (ret) { dev_err(&pdev->dev, "Failed to request irq %i\n", i2c_dev->irq); goto release_dma; -- 2.24.1