Commit 26ca88aa authored May 06, 2020 by Thierry Reding

i2c: tegra: Keep IRQs enabled during suspend/resume



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 <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

parent 44c99904

drivers/i2c/busses/i2c-tegra.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -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;

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