media: drivers: improve a size determination

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

This issue was detected by using the Coccinelle software.

[mchehab@s-opensoure.com: merge similar patches into one]

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Hans Verkuil <hansverk@cisco.com>

6 files changed, 6 insertions, 7 deletions

diff --git a/drivers/media/dvb-frontends/as102_fe.c b/drivers/media/dvb-frontends/as102_fe.c
index 1fb4ab21d786..b1c84ee914f0 100644
--- a/drivers/media/dvb-frontends/as102_fe.c
+++ b/drivers/media/dvb-frontends/as102_fe.c
@@ -455,7 +455,7 @@ struct dvb_frontend *as102_attach(const char *name,
 	struct as102_state *state;
 	struct dvb_frontend *fe;
 
-	state = kzalloc(sizeof(struct as102_state), GFP_KERNEL);
+	state = kzalloc(sizeof(*state), GFP_KERNEL);
 	if (!state)
 		return NULL;
 
diff --git a/drivers/media/dvb-frontends/cx24113.c b/drivers/media/dvb-frontends/cx24113.c
index 8fc7333c76b7..2c5502cab5e1 100644
--- a/drivers/media/dvb-frontends/cx24113.c
+++ b/drivers/media/dvb-frontends/cx24113.c
@@ -552,8 +552,7 @@ struct dvb_frontend *cx24113_attach(struct dvb_frontend *fe,
 		const struct cx24113_config *config, struct i2c_adapter *i2c)
 {
 	/* allocate memory for the internal state */
-	struct cx24113_state *state =
-		kzalloc(sizeof(struct cx24113_state), GFP_KERNEL);
+	struct cx24113_state *state = kzalloc(sizeof(*state), GFP_KERNEL);
 	int rc;
 
 	if (!state)
diff --git a/drivers/media/dvb-frontends/cx24116.c b/drivers/media/dvb-frontends/cx24116.c
index e5135fbe0297..531c5861a27e 100644
--- a/drivers/media/dvb-frontends/cx24116.c
+++ b/drivers/media/dvb-frontends/cx24116.c
@@ -1126,7 +1126,7 @@ struct dvb_frontend *cx24116_attach(const struct cx24116_config *config,
 	dprintk("%s\n", __func__);
 
 	/* allocate memory for the internal state */
-	state = kzalloc(sizeof(struct cx24116_state), GFP_KERNEL);
+	state = kzalloc(sizeof(*state), GFP_KERNEL);
 	if (state == NULL)
 		goto error1;
 
diff --git a/drivers/media/dvb-frontends/ds3000.c b/drivers/media/dvb-frontends/ds3000.c
index 293c4103e5ff..3e347d03acb3 100644
--- a/drivers/media/dvb-frontends/ds3000.c
+++ b/drivers/media/dvb-frontends/ds3000.c
@@ -839,7 +839,7 @@ struct dvb_frontend *ds3000_attach(const struct ds3000_config *config,
 	dprintk("%s\n", __func__);
 
 	/* allocate memory for the internal state */
-	state = kzalloc(sizeof(struct ds3000_state), GFP_KERNEL);
+	state = kzalloc(sizeof(*state), GFP_KERNEL);
 	if (!state)
 		goto error2;
 
diff --git a/drivers/media/dvb-frontends/mb86a20s.c b/drivers/media/dvb-frontends/mb86a20s.c
index 340984100aec..ba7a433dd424 100644
--- a/drivers/media/dvb-frontends/mb86a20s.c
+++ b/drivers/media/dvb-frontends/mb86a20s.c
@@ -2071,7 +2071,7 @@ struct dvb_frontend *mb86a20s_attach(const struct mb86a20s_config *config,
 	dev_dbg(&i2c->dev, "%s called.\n", __func__);
 
 	/* allocate memory for the internal state */
-	state = kzalloc(sizeof(struct mb86a20s_state), GFP_KERNEL);
+	state = kzalloc(sizeof(*state), GFP_KERNEL);
 	if (!state)
 		goto error;
 
diff --git a/drivers/media/dvb-frontends/sp2.c b/drivers/media/dvb-frontends/sp2.c
index d3b4f8822096..dd556012ceb6 100644
--- a/drivers/media/dvb-frontends/sp2.c
+++ b/drivers/media/dvb-frontends/sp2.c
@@ -381,7 +381,7 @@ static int sp2_probe(struct i2c_client *client,
 
 	dev_dbg(&client->dev, "\n");
 
-	s = kzalloc(sizeof(struct sp2), GFP_KERNEL);
+	s = kzalloc(sizeof(*s), GFP_KERNEL);
 	if (!s) {
 		ret = -ENOMEM;
 		goto err;