Use devm_ioremap and devm_hwrng_register instead of ioremap and
hwrng_register. This removes unregistering and error handling code.
This patch is not tested with hardware as I don't have access to it.
Signed-off-by: PrasannaKumar Muralidharan <prasannatsmku...@gmail.com>
---
drivers/char/hw_random/pasemi-rng.c | 26 +++-----------------------
1 file changed, 3 insertions(+), 23 deletions(-)
diff --git a/drivers/char/hw_random/pasemi-rng.c
b/drivers/char/hw_random/pasemi-rng.c
index 699b725..0f03397 100644
--- a/drivers/char/hw_random/pasemi-rng.c
+++ b/drivers/char/hw_random/pasemi-rng.c
@@ -100,37 +100,18 @@ static int rng_probe(struct platform_device *ofdev)
void __iomem *rng_regs;
struct device_node *rng_np = ofdev->dev.of_node;
struct resource res;
- int err = 0;
- err = of_address_to_resource(rng_np, 0, &res);
- if (err)
+ if (of_address_to_resource(rng_np, 0, &res))
return -ENODEV;
- rng_regs = ioremap(res.start, 0x100);
-
+ rng_regs = devm_ioremap(&ofdev->dev, res.start, 0x100);
if (!rng_regs)
return -ENOMEM;
pasemi_rng.priv = (unsigned long)rng_regs;
pr_info("Registering PA Semi RNG\n");
-
- err = hwrng_register(&pasemi_rng);
-
- if (err)
- iounmap(rng_regs);
-
- return err;
-}
-
-static int rng_remove(struct platform_device *dev)
-{
- void __iomem *rng_regs = (void __iomem *)pasemi_rng.priv;
-
- hwrng_unregister(&pasemi_rng);
- iounmap(rng_regs);
-
- return 0;
+ return devm_hwrng_register(&ofdev->dev, &pasemi_rng);
}
static const struct of_device_id rng_match[] = {
@@ -146,7 +127,6 @@ static struct platform_driver rng_driver = {
.of_match_table = rng_match,
},
.probe = rng_probe,
- .remove = rng_remove,
};
module_platform_driver(rng_driver);
--
2.5.0
--
To unsubscribe from this list: send the line "unsubscribe linux-crypto" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
