[PATCH 3/3] hwrng: npcm - 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/npcm-rng.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/char/hw_random/npcm-rng.c b/drivers/char/hw_random/npcm-rng.c
index 9ff00f096f38..beec96391af7 100644
--- a/drivers/char/hw_random/npcm-rng.c
+++ b/drivers/char/hw_random/npcm-rng.c
@@ -54,10 +54,11 @@ static void npcm_rng_cleanup(struct hwrng *rng)
 static int npcm_rng_read(struct hwrng *rng, void *buf, size_t max, bool wait)
 {
 	struct npcm_rng *priv = to_npcm_rng(rng);
+	struct device *dev = (struct device *)priv->rng.priv
 	int retval = 0;
 	int ready;
 
-	pm_runtime_get_sync((struct device *)priv->rng.priv);
+	pm_runtime_get_sync(dev);
 
 	while (max) {
 		if (wait) {
@@ -79,8 +80,8 @@ static int npcm_rng_read(struct hwrng *rng, void *buf, size_t max, bool wait)
 		max--;
 	}
 
-	pm_runtime_mark_last_busy((struct device *)priv->rng.priv);
-	pm_runtime_put_sync_autosuspend((struct device *)priv->rng.priv);
+	pm_runtime_mark_last_busy(dev);
+	pm_runtime_put_sync_autosuspend(dev);
 
 	return retval || !wait ? retval : -EIO;
 }
-- 
2.39.5