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Commit 8302c741 authored by Mika Westerberg's avatar Mika Westerberg Committed by Grant Likely
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gpio/langwell: use devm_* helpers to simplify probe 



Use devm_* helper functions where possible to make the error handling in
the probe function simpler.

Signed-off-by: default avatarMika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
parent fc3a1f04

drivers/gpio/gpio-langwell.c

+7 −11
Original line number Diff line number Diff line
@@ -309,7 +309,7 @@ static int __devinit lnw_gpio_probe(struct pci_dev *pdev, 


	retval = pci_enable_device(pdev);

	if (retval)

		goto done;

		return retval;



	retval = pci_request_regions(pdev, "langwell_gpio");

	if (retval) {
@@ -331,18 +331,18 @@ static int __devinit lnw_gpio_probe(struct pci_dev *pdev, 
	/* get the register base from bar0 */

	start = pci_resource_start(pdev, 0);

	len = pci_resource_len(pdev, 0);

	base = ioremap_nocache(start, len);

	base = devm_ioremap_nocache(&pdev->dev, start, len);

	if (!base) {

		dev_err(&pdev->dev, "error mapping bar0\n");

		retval = -EFAULT;

		goto err3;

	}



	lnw = kzalloc(sizeof(struct lnw_gpio), GFP_KERNEL);

	lnw = devm_kzalloc(&pdev->dev, sizeof(struct lnw_gpio), GFP_KERNEL);

	if (!lnw) {

		dev_err(&pdev->dev, "can't allocate langwell_gpio chip data\n");

		retval = -ENOMEM;

		goto err4;

		goto err3;

	}

	lnw->reg_base = base;

	lnw->irq_base = irq_base;
@@ -361,7 +361,7 @@ static int __devinit lnw_gpio_probe(struct pci_dev *pdev, 
	retval = gpiochip_add(&lnw->chip);

	if (retval) {

		dev_err(&pdev->dev, "langwell gpiochip_add error %d\n", retval);

		goto err5;

		goto err3;

	}

	irq_set_handler_data(pdev->irq, lnw);

	irq_set_chained_handler(pdev->irq, lnw_irq_handler);
@@ -376,16 +376,12 @@ static int __devinit lnw_gpio_probe(struct pci_dev *pdev, 
	pm_runtime_put_noidle(&pdev->dev);

	pm_runtime_allow(&pdev->dev);



	goto done;

err5:

	kfree(lnw);

err4:

	iounmap(base);

	return 0;



err3:

	pci_release_regions(pdev);

err2:

	pci_disable_device(pdev);

done:

	return retval;

}