From da9df93e9e0fd1d8c14315c6c0f989a30c291a11 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Sun, 28 Dec 2014 15:23:14 +0800 Subject: gpio: dwapb: Convert to use resource managed APIs Use resource managed APIs to simplify the code a bit. Signed-off-by: Axel Lin Signed-off-by: Linus Walleij --- drivers/gpio/gpio-dwapb.c | 53 +++++++++++++---------------------------------- 1 file changed, 14 insertions(+), 39 deletions(-) (limited to 'drivers/gpio/gpio-dwapb.c') diff --git a/drivers/gpio/gpio-dwapb.c b/drivers/gpio/gpio-dwapb.c index b4eb6a657d34..58faf04fce5d 100644 --- a/drivers/gpio/gpio-dwapb.c +++ b/drivers/gpio/gpio-dwapb.c @@ -469,15 +469,13 @@ dwapb_gpio_get_pdata_of(struct device *dev) if (nports == 0) return ERR_PTR(-ENODEV); - pdata = kzalloc(sizeof(*pdata), GFP_KERNEL); + pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); if (!pdata) return ERR_PTR(-ENOMEM); - pdata->properties = kcalloc(nports, sizeof(*pp), GFP_KERNEL); - if (!pdata->properties) { - kfree(pdata); + pdata->properties = devm_kcalloc(dev, nports, sizeof(*pp), GFP_KERNEL); + if (!pdata->properties) return ERR_PTR(-ENOMEM); - } pdata->nports = nports; @@ -490,8 +488,6 @@ dwapb_gpio_get_pdata_of(struct device *dev) pp->idx >= DWAPB_MAX_PORTS) { dev_err(dev, "missing/invalid port index for %s\n", port_np->full_name); - kfree(pdata->properties); - kfree(pdata); return ERR_PTR(-EINVAL); } @@ -523,15 +519,6 @@ dwapb_gpio_get_pdata_of(struct device *dev) return pdata; } -static inline void dwapb_free_pdata_of(struct dwapb_platform_data *pdata) -{ - if (!IS_ENABLED(CONFIG_OF_GPIO) || !pdata) - return; - - kfree(pdata->properties); - kfree(pdata); -} - static int dwapb_gpio_probe(struct platform_device *pdev) { unsigned int i; @@ -540,40 +527,32 @@ static int dwapb_gpio_probe(struct platform_device *pdev) int err; struct device *dev = &pdev->dev; struct dwapb_platform_data *pdata = dev_get_platdata(dev); - bool is_pdata_alloc = !pdata; - if (is_pdata_alloc) { + if (!pdata) { pdata = dwapb_gpio_get_pdata_of(dev); if (IS_ERR(pdata)) return PTR_ERR(pdata); } - if (!pdata->nports) { - err = -ENODEV; - goto out_err; - } + if (!pdata->nports) + return -ENODEV; gpio = devm_kzalloc(&pdev->dev, sizeof(*gpio), GFP_KERNEL); - if (!gpio) { - err = -ENOMEM; - goto out_err; - } + if (!gpio) + return -ENOMEM; + gpio->dev = &pdev->dev; gpio->nr_ports = pdata->nports; gpio->ports = devm_kcalloc(&pdev->dev, gpio->nr_ports, sizeof(*gpio->ports), GFP_KERNEL); - if (!gpio->ports) { - err = -ENOMEM; - goto out_err; - } + if (!gpio->ports) + return -ENOMEM; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); gpio->regs = devm_ioremap_resource(&pdev->dev, res); - if (IS_ERR(gpio->regs)) { - err = PTR_ERR(gpio->regs); - goto out_err; - } + if (IS_ERR(gpio->regs)) + return PTR_ERR(gpio->regs); for (i = 0; i < gpio->nr_ports; i++) { err = dwapb_gpio_add_port(gpio, &pdata->properties[i], i); @@ -582,16 +561,12 @@ static int dwapb_gpio_probe(struct platform_device *pdev) } platform_set_drvdata(pdev, gpio); - goto out_err; + return 0; out_unregister: dwapb_gpio_unregister(gpio); dwapb_irq_teardown(gpio); -out_err: - if (is_pdata_alloc) - dwapb_free_pdata_of(pdata); - return err; } -- cgit v1.2.2