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>
diff --git a/drivers/gpio/gpio-vx855.c b/drivers/gpio/gpio-vx855.c
index 9d21d2f..57b470d 100644
--- a/drivers/gpio/gpio-vx855.c
+++ b/drivers/gpio/gpio-vx855.c
@@ -52,8 +52,6 @@
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 @@
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 @@
* 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;
}