linux-kernel - [PATCH 2/2] [media] m88rs6000t: Improve three size determinations

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Date:   Sat, 16 Sep 2017 22:10:16 +0200
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     linux-media@...r.kernel.org,
        Mauro Carvalho Chehab <mchehab@...nel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH 2/2] [media] m88rs6000t: Improve three size determinations

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Sat, 16 Sep 2017 21:38:03 +0200

Replace the specification of data structures by variable references
as the parameter for the operator "sizeof" to make the corresponding size
determination a bit safer according to the Linux coding style convention.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/media/tuners/m88rs6000t.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/media/tuners/m88rs6000t.c b/drivers/media/tuners/m88rs6000t.c
index d89793a05862..1e55c679b25e 100644
--- a/drivers/media/tuners/m88rs6000t.c
+++ b/drivers/media/tuners/m88rs6000t.c
@@ -629,6 +629,6 @@ static int m88rs6000t_probe(struct i2c_client *client,
 	}
 
-	memcpy(&dev->cfg, cfg, sizeof(struct m88rs6000t_config));
+	memcpy(&dev->cfg, cfg, sizeof(*cfg));
 	dev->client = client;
 	dev->regmap = devm_regmap_init_i2c(client, &regmap_config);
 	if (IS_ERR(dev->regmap)) {
@@ -696,7 +696,7 @@ static int m88rs6000t_probe(struct i2c_client *client,
 
 	fe->tuner_priv = dev;
 	memcpy(&fe->ops.tuner_ops, &m88rs6000t_tuner_ops,
-			sizeof(struct dvb_tuner_ops));
+	       sizeof(fe->ops.tuner_ops));
 	i2c_set_clientdata(client, dev);
 	return 0;
 err:
@@ -712,8 +712,7 @@ static int m88rs6000t_remove(struct i2c_client *client)
 	struct dvb_frontend *fe = dev->cfg.fe;
 
 	dev_dbg(&client->dev, "\n");
-
-	memset(&fe->ops.tuner_ops, 0, sizeof(struct dvb_tuner_ops));
+	memset(&fe->ops.tuner_ops, 0, sizeof(fe->ops.tuner_ops));
 	fe->tuner_priv = NULL;
 	kfree(dev);
 
-- 
2.14.1