diff options
author | Axel Lin <axel.lin@ingics.com> | 2014-12-12 05:17:41 +0100 |
---|---|---|
committer | Linus Walleij <linus.walleij@linaro.org> | 2015-01-15 17:23:18 +0100 |
commit | 5b6a342ba9594f1636f85e4c58004d87de9570ab (patch) | |
tree | 2cdffca89ebedf8cf183a9d28b920b52aa455e55 /drivers/gpio | |
parent | gpio/xilinx: Use of_mm_gpiochip_remove (diff) | |
download | linux-5b6a342ba9594f1636f85e4c58004d87de9570ab.tar.xz linux-5b6a342ba9594f1636f85e4c58004d87de9570ab.zip |
gpio: vx855: Switch to use managed resources APIs
Use devm_* APIs to simplify the code a bit.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio')
-rw-r--r-- | drivers/gpio/gpio-vx855.c | 44 |
1 files changed, 6 insertions, 38 deletions
diff --git a/drivers/gpio/gpio-vx855.c b/drivers/gpio/gpio-vx855.c index 9d21d2fcc327..57b470d5b39e 100644 --- a/drivers/gpio/gpio-vx855.c +++ b/drivers/gpio/gpio-vx855.c @@ -52,8 +52,6 @@ struct vx855_gpio { spinlock_t lock; u32 io_gpi; u32 io_gpo; - bool gpi_reserved; - bool gpo_reserved; }; /* resolve a GPIx into the corresponding bit position */ @@ -224,14 +222,13 @@ static int vx855gpio_probe(struct platform_device *pdev) struct resource *res_gpi; struct resource *res_gpo; struct vx855_gpio *vg; - int ret; res_gpi = platform_get_resource(pdev, IORESOURCE_IO, 0); res_gpo = platform_get_resource(pdev, IORESOURCE_IO, 1); if (!res_gpi || !res_gpo) return -EBUSY; - vg = kzalloc(sizeof(*vg), GFP_KERNEL); + vg = devm_kzalloc(&pdev->dev, sizeof(*vg), GFP_KERNEL); if (!vg) return -ENOMEM; @@ -250,56 +247,27 @@ static int vx855gpio_probe(struct platform_device *pdev) * succeed. Ignore and continue. */ - if (!request_region(res_gpi->start, resource_size(res_gpi), - MODULE_NAME "_gpi")) + if (!devm_request_region(&pdev->dev, res_gpi->start, + resource_size(res_gpi), MODULE_NAME "_gpi")) dev_warn(&pdev->dev, "GPI I/O resource busy, probably claimed by ACPI\n"); - else - vg->gpi_reserved = true; - if (!request_region(res_gpo->start, resource_size(res_gpo), - MODULE_NAME "_gpo")) + if (!devm_request_region(&pdev->dev, res_gpo->start, + resource_size(res_gpo), MODULE_NAME "_gpo")) dev_warn(&pdev->dev, "GPO I/O resource busy, probably claimed by ACPI\n"); - else - vg->gpo_reserved = true; vx855gpio_gpio_setup(vg); - ret = gpiochip_add(&vg->gpio); - if (ret) { - dev_err(&pdev->dev, "failed to register GPIOs\n"); - goto out_release; - } - - return 0; - -out_release: - if (vg->gpi_reserved) - release_region(res_gpi->start, resource_size(res_gpi)); - if (vg->gpo_reserved) - release_region(res_gpi->start, resource_size(res_gpo)); - kfree(vg); - return ret; + return gpiochip_add(&vg->gpio); } static int vx855gpio_remove(struct platform_device *pdev) { struct vx855_gpio *vg = platform_get_drvdata(pdev); - struct resource *res; gpiochip_remove(&vg->gpio); - if (vg->gpi_reserved) { - res = platform_get_resource(pdev, IORESOURCE_IO, 0); - release_region(res->start, resource_size(res)); - } - if (vg->gpo_reserved) { - res = platform_get_resource(pdev, IORESOURCE_IO, 1); - release_region(res->start, resource_size(res)); - } - - kfree(vg); return 0; } |