hwrng: atmel - use clk_disable_unprepare instead of clk_disable

Since clk_prepare_enable() is used to get trng->clk, we should
use clk_disable_unprepare() to release it for the error path.

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/char/hw_random/atmel-rng.c b/drivers/char/hw_random/atmel-rng.c
index ae7cae579eac804b2b7cb0737887f33f3384a200..661c82cde0f211c0ed5912eb81a814043adc31d9 100644 (file)
--- a/drivers/char/hw_random/atmel-rng.c
+++ b/drivers/char/hw_random/atmel-rng.c
@@ -94,7 +94,7 @@ static int atmel_trng_probe(struct platform_device *pdev)
        return 0;
 
 err_register:
-       clk_disable(trng->clk);
+       clk_disable_unprepare(trng->clk);
        return ret;
 }