In preparation for consolidating bcm63xx-rng into bcm2835-rng, make sure
that we obtain the base register via platform_get_resource() since we
need to support the non-DT enabled MIPS-based BCM63xx DSL SoCs.
Signed-off-by: Florian Fainelli <f.fainelli@xxxxxxxxx>
---
drivers/char/hw_random/bcm2835-rng.c | 20 ++++++++++----------
1 file changed, 10 insertions(+), 10 deletions(-)
diff --git a/drivers/char/hw_random/bcm2835-rng.c b/drivers/char/hw_random/bcm2835-rng.c
index 574211a49549..a818418a7e4c 100644
--- a/drivers/char/hw_random/bcm2835-rng.c
+++ b/drivers/char/hw_random/bcm2835-rng.c
@@ -81,21 +81,23 @@ static int bcm2835_rng_probe(struct platform_device *pdev)
void (*rng_setup)(void __iomem *base);
const struct of_device_id *rng_id;
void __iomem *rng_base;
+ struct resource *r;
int err;
+ r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+
/* map peripheral */
- rng_base = of_iomap(np, 0);
- if (!rng_base) {
+ rng_base = devm_ioremap_resource(dev, r);
+ if (IS_ERR(rng_base)) {
dev_err(dev, "failed to remap rng regs");
- return -ENODEV;
+ return PTR_ERR(rng_base);
}
bcm2835_rng_ops.priv = (unsigned long)rng_base;
rng_id = of_match_node(bcm2835_rng_of_match, np);
- if (!rng_id) {
- iounmap(rng_base);
+ if (!rng_id)
return -EINVAL;
- }
+
/* Check for rng init function, execute it */
rng_setup = rng_id->data;
if (rng_setup)
@@ -107,10 +109,9 @@ static int bcm2835_rng_probe(struct platform_device *pdev)
/* register driver */
err = hwrng_register(&bcm2835_rng_ops);
- if (err) {
+ if (err)
dev_err(dev, "hwrng registration failed\n");
- iounmap(rng_base);
- } else
+ else
dev_info(dev, "hwrng registered\n");
return err;
@@ -125,7 +126,6 @@ static int bcm2835_rng_remove(struct platform_device *pdev)
/* unregister driver */
hwrng_unregister(&bcm2835_rng_ops);
- iounmap(rng_base);
return 0;
}
--
2.9.3
