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Diffstat (limited to 'drivers/char')
-rw-r--r--drivers/char/hw_random/omap-rng.c22
1 files changed, 2 insertions, 20 deletions
diff --git a/drivers/char/hw_random/omap-rng.c b/drivers/char/hw_random/omap-rng.c
index b757fac3cd1f..448ddb59438a 100644
--- a/drivers/char/hw_random/omap-rng.c
+++ b/drivers/char/hw_random/omap-rng.c
@@ -113,22 +113,12 @@ static int __devinit omap_rng_probe(struct platform_device *pdev)
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- ret = -ENOENT;
- goto err_region;
- }
-
- if (!request_mem_region(res->start, resource_size(res), pdev->name)) {
- ret = -EBUSY;
- goto err_region;
- }
-
- dev_set_drvdata(&pdev->dev, res);
- rng_base = ioremap(res->start, resource_size(res));
+ rng_base = devm_request_and_ioremap(&pdev->dev, res);
if (!rng_base) {
ret = -ENOMEM;
goto err_ioremap;
}
+ dev_set_drvdata(&pdev->dev, res);
ret = hwrng_register(&omap_rng_ops);
if (ret)
@@ -143,11 +133,8 @@ static int __devinit omap_rng_probe(struct platform_device *pdev)
return 0;
err_register:
- iounmap(rng_base);
rng_base = NULL;
err_ioremap:
- release_mem_region(res->start, resource_size(res));
-err_region:
if (cpu_is_omap24xx()) {
clk_disable(rng_ick);
clk_put(rng_ick);
@@ -157,20 +144,15 @@ err_region:
static int __exit omap_rng_remove(struct platform_device *pdev)
{
- struct resource *res = dev_get_drvdata(&pdev->dev);
-
hwrng_unregister(&omap_rng_ops);
omap_rng_write_reg(RNG_MASK_REG, 0x0);
- iounmap(rng_base);
-
if (cpu_is_omap24xx()) {
clk_disable(rng_ick);
clk_put(rng_ick);
}
- release_mem_region(res->start, resource_size(res));
rng_base = NULL;
return 0;