[PATCH 1/3] hwrng: atmel - Add a local variable for struct device pointer

[Sakari Ailus <sakari.ailus@linux.intel.com>]

Add a local variable for a struct device pointer instead of obtaining the
hwrng priv field and casting it as a struct device pointer whenever it's
needed.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
---
 drivers/char/hw_random/atmel-rng.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/char/hw_random/atmel-rng.c b/drivers/char/hw_random/atmel-rng.c
index 143406bc6939..5192c39ebaeb 100644
--- a/drivers/char/hw_random/atmel-rng.c
+++ b/drivers/char/hw_random/atmel-rng.c
@@ -56,12 +56,13 @@ static int atmel_trng_read(struct hwrng *rng, void *buf, size_t max,
 			   bool wait)
 {
 	struct atmel_trng *trng = container_of(rng, struct atmel_trng, rng);
+	struct device *dev = (struct device *)trng->rng.priv;
 	u32 *data = buf;
 	int ret;
 
-	ret = pm_runtime_get_sync((struct device *)trng->rng.priv);
+	ret = pm_runtime_get_sync(dev);
 	if (ret < 0) {
-		pm_runtime_put_sync((struct device *)trng->rng.priv);
+		pm_runtime_put_sync(dev);
 		return ret;
 	}
 
@@ -79,8 +80,8 @@ static int atmel_trng_read(struct hwrng *rng, void *buf, size_t max,
 	ret = 4;
 
 out:
-	pm_runtime_mark_last_busy((struct device *)trng->rng.priv);
-	pm_runtime_put_sync_autosuspend((struct device *)trng->rng.priv);
+	pm_runtime_mark_last_busy(dev);
+	pm_runtime_put_sync_autosuspend(dev);
 	return ret;
 }
 
-- 
2.39.5