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PCI: dra7xx: Simplify probe code with devm_gpiod_get_optional()

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No functional change.  Use the new devm_gpiod_get_optional() to simplify
the probe code.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Kishon Vijay Abraham I 2017-01-11 17:36:52 +05:30 committed by Bjorn Helgaas
parent 950bf6388b
commit 602d38bc65
1 changed files with 5 additions and 16 deletions
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21
drivers/pci/dwc/pci-dra7xx.c
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@ -320,9 +320,7 @@ static int __init dra7xx_pcie_probe(struct platform_device *pdev)
struct device *dev = &pdev->dev;
struct device_node *np = dev->of_node;
char name[10];
int gpio_sel;
enum of_gpio_flags flags;
unsigned long gpio_flags;
struct gpio_desc *reset;
dra7xx = devm_kzalloc(dev, sizeof(*dra7xx), GFP_KERNEL);
if (!dra7xx)
@ -388,19 +386,10 @@ static int __init dra7xx_pcie_probe(struct platform_device *pdev)
goto err_get_sync;
}
gpio_sel = of_get_gpio_flags(dev->of_node, 0, &flags);
if (gpio_is_valid(gpio_sel)) {
gpio_flags = (flags & OF_GPIO_ACTIVE_LOW) ?
GPIOF_OUT_INIT_LOW : GPIOF_OUT_INIT_HIGH;
ret = devm_gpio_request_one(dev, gpio_sel, gpio_flags,
"pcie_reset");
if (ret) {
dev_err(dev, "gpio%d request failed, ret %d\n",
gpio_sel, ret);
goto err_gpio;
}
} else if (gpio_sel == -EPROBE_DEFER) {
ret = -EPROBE_DEFER;
reset = devm_gpiod_get_optional(dev, NULL, GPIOD_OUT_HIGH);
if (IS_ERR(reset)) {
ret = PTR_ERR(reset);
dev_err(&pdev->dev, "gpio request failed, ret %d\n", ret);
goto err_gpio;
}