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 <prasannatsmkumar@xxxxxxxxx> --- 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 majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html