diff options
| -rw-r--r-- | drivers/char/hw_random/atmel-rng.c | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/drivers/char/hw_random/atmel-rng.c b/drivers/char/hw_random/atmel-rng.c index 06e79d516743..fe444196e6b3 100644 --- a/drivers/char/hw_random/atmel-rng.c +++ b/drivers/char/hw_random/atmel-rng.c @@ -17,6 +17,7 @@ #include <linux/of.h> #include <linux/platform_device.h> #include <linux/pm_runtime.h> +#include <linux/units.h> #define TRNG_CR 0x00 #define TRNG_MR 0x04 @@ -85,20 +86,14 @@ out: static int atmel_trng_init(struct atmel_trng *trng) { - unsigned long rate; int ret; ret = clk_prepare_enable(trng->clk); if (ret) return ret; - if (trng->has_half_rate) { - rate = clk_get_rate(trng->clk); - - /* if peripheral clk is above 100MHz, set HALFR */ - if (rate > 100000000) - writel(TRNG_HALFR, trng->base + TRNG_MR); - } + if (trng->has_half_rate && clk_get_rate(trng->clk) > 100 * HZ_PER_MHZ) + writel(TRNG_HALFR, trng->base + TRNG_MR); writel(TRNG_KEY | 1, trng->base + TRNG_CR); |