On Thursday 17 August 2017 03:47 AM, Franklin S Cooper Jr wrote:
> @@ -802,7 +821,6 @@ static int davinci_i2c_probe(struct platform_device *pdev)
> dev->clk = devm_clk_get(&pdev->dev, NULL);
> if (IS_ERR(dev->clk))
> return PTR_ERR(dev->clk);
> - clk_prepare_enable(dev->clk);
>
> mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> dev->base = devm_ioremap_resource(&pdev->dev, mem);
> @@ -811,6 +829,18 @@ static int davinci_i2c_probe(struct platform_device *pdev)
> goto err_unuse_clocks;
This goto is wrong now. There is no need to unwind the pm_runtime setup
on a devm_ioremap_resource() failure. You can just return error here.
> }
>
> + pm_runtime_set_autosuspend_delay(dev->dev,
> + DAVINCI_I2C_PM_TIMEOUT);
> + pm_runtime_use_autosuspend(dev->dev);
> +
> + pm_runtime_enable(dev->dev);
> +
> + r = pm_runtime_get_sync(dev->dev);
> + if (r < 0) {
> + dev_err(dev->dev, "failed to runtime_get device: %d\n", r);
> + goto err_unuse_clocks;
> + }
> +
> i2c_davinci_init(dev);
>
> r = devm_request_irq(&pdev->dev, dev->irq, i2c_davinci_isr, 0,
> @@ -849,10 +879,16 @@ static int davinci_i2c_probe(struct platform_device *pdev)
> if (r)
> goto err_unuse_clocks;
>
> + pm_runtime_mark_last_busy(dev->dev);
> + pm_runtime_put_autosuspend(dev->dev);
> +
> return 0;
>
> err_unuse_clocks:
> - clk_disable_unprepare(dev->clk);
> + pm_runtime_dont_use_autosuspend(dev->dev);
> + pm_runtime_put_sync(dev->dev);
> + pm_runtime_disable(dev->dev);
> +
> dev->clk = NULL;
This null setting of clk seems quite bogus and can be cleaned-up.
> return r;
> }
Thanks,
Sekhar
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