diff options
| author | Thorsten Blum <blum@kernel.org> | 2026-09-29 23:37:50 +0200 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2026-10-08 18:48:06 +1100 |
| commit | 7d91d0ae0cd94db834a6edafc1ab92e77f812154 (patch) | |
| tree | cbd0a68602b8871b03e79676c2161ef9c9871a47 | |
| parent | 611b15d344ff9c5e5be17e2f76df71feb9f8caa4 (diff) | |
hwrng: atmel - use HZ_PER_MHZ in atmel_trng_init()
Combine and inline the rate check to simplify the code. Drop the local
rate variable and use HZ_PER_MHZ instead of the hard-coded frequency.
Signed-off-by: Thorsten Blum <blum@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| -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); |