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author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2018-11-07 21:18:04 +0200 |
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committer | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2018-12-02 15:40:21 +0200 |
commit | 6ad02b29b836b6180263f14cc41147f4cb6d6a70 (patch) | |
tree | eb8f404b64f69858b757e9d2c2e8e922ca5d48e9 /drivers/gpio/gpio-pch.c | |
parent | c3bc3ff9e8019fba74ce62bfb501d710c2fca9d3 (diff) | |
download | linux-6ad02b29b836b6180263f14cc41147f4cb6d6a70.tar.bz2 |
gpio: pch: Convert to use managed functions pcim_* and devm_*
This makes the error handling much more simpler than open-coding everything
and in addition makes the probe function smaller an tidier.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Diffstat (limited to 'drivers/gpio/gpio-pch.c')
-rw-r--r-- | drivers/gpio/gpio-pch.c | 64 |
1 files changed, 12 insertions, 52 deletions
diff --git a/drivers/gpio/gpio-pch.c b/drivers/gpio/gpio-pch.c index ffce0ab912ed..789e60ea2ac5 100644 --- a/drivers/gpio/gpio-pch.c +++ b/drivers/gpio/gpio-pch.c @@ -367,29 +367,24 @@ static int pch_gpio_probe(struct pci_dev *pdev, int irq_base; u32 msk; - chip = kzalloc(sizeof(*chip), GFP_KERNEL); + chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL); if (chip == NULL) return -ENOMEM; chip->dev = &pdev->dev; - ret = pci_enable_device(pdev); + ret = pcim_enable_device(pdev); if (ret) { dev_err(&pdev->dev, "%s : pci_enable_device FAILED", __func__); - goto err_pci_enable; + return ret; } - ret = pci_request_regions(pdev, KBUILD_MODNAME); + ret = pcim_iomap_regions(pdev, 1 << 1, KBUILD_MODNAME); if (ret) { dev_err(&pdev->dev, "pci_request_regions FAILED-%d", ret); - goto err_request_regions; + return ret; } - chip->base = pci_iomap(pdev, 1, 0); - if (!chip->base) { - dev_err(&pdev->dev, "%s : pci_iomap FAILED", __func__); - ret = -ENOMEM; - goto err_iomap; - } + chip->base = pcim_iomap_table(pdev)[1]; if (pdev->device == 0x8803) chip->ioh = INTEL_EG20T_PCH; @@ -405,10 +400,10 @@ static int pch_gpio_probe(struct pci_dev *pdev, #ifdef CONFIG_OF_GPIO chip->gpio.of_node = pdev->dev.of_node; #endif - ret = gpiochip_add_data(&chip->gpio, chip); + ret = devm_gpiochip_add_data(&pdev->dev, &chip->gpio, chip); if (ret) { dev_err(&pdev->dev, "PCH gpio: Failed to register GPIO\n"); - goto err_gpiochip_add; + return ret; } irq_base = devm_irq_alloc_descs(&pdev->dev, -1, 0, @@ -416,7 +411,7 @@ static int pch_gpio_probe(struct pci_dev *pdev, if (irq_base < 0) { dev_warn(&pdev->dev, "PCH gpio: Failed to get IRQ base num\n"); chip->irq_base = -1; - goto end; + return 0; } chip->irq_base = irq_base; @@ -427,47 +422,13 @@ static int pch_gpio_probe(struct pci_dev *pdev, ret = devm_request_irq(&pdev->dev, pdev->irq, pch_gpio_handler, IRQF_SHARED, KBUILD_MODNAME, chip); - if (ret != 0) { + if (ret) { dev_err(&pdev->dev, "%s request_irq failed\n", __func__); - goto err_request_irq; + return ret; } - ret = pch_gpio_alloc_generic_chip(chip, irq_base, - gpio_pins[chip->ioh]); - if (ret) - goto err_request_irq; - -end: - return 0; - -err_request_irq: - gpiochip_remove(&chip->gpio); - -err_gpiochip_add: - pci_iounmap(pdev, chip->base); - -err_iomap: - pci_release_regions(pdev); - -err_request_regions: - pci_disable_device(pdev); - -err_pci_enable: - kfree(chip); - dev_err(&pdev->dev, "%s Failed returns %d\n", __func__, ret); - return ret; -} - -static void pch_gpio_remove(struct pci_dev *pdev) -{ - struct pch_gpio *chip = pci_get_drvdata(pdev); - - gpiochip_remove(&chip->gpio); - pci_iounmap(pdev, chip->base); - pci_release_regions(pdev); - pci_disable_device(pdev); - kfree(chip); + return pch_gpio_alloc_generic_chip(chip, irq_base, gpio_pins[chip->ioh]); } #ifdef CONFIG_PM @@ -538,7 +499,6 @@ static struct pci_driver pch_gpio_driver = { .name = "pch_gpio", .id_table = pch_gpio_pcidev_id, .probe = pch_gpio_probe, - .remove = pch_gpio_remove, .suspend = pch_gpio_suspend, .resume = pch_gpio_resume }; |