Subject: [PATCH 3/4] char/tpm: Improve a size determination in nine functions

From: SF Markus Elfring <[email-masked]>
Date: Mon, 16 Oct 2017 19:33:59 +0200

From: Markus Elfring <[email-masked]>
Date: Mon, 16 Oct 2017 18:28:17 +0200

Replace the specification of data structures by pointer dereferences
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.

Signed-off-by: Markus Elfring <[email-masked]>
---
 drivers/char/tpm/st33zp24/i2c.c      | 3 +--
 drivers/char/tpm/st33zp24/spi.c      | 3 +--
 drivers/char/tpm/st33zp24/st33zp24.c | 3 +--
 drivers/char/tpm/tpm_crb.c           | 2 +-
 drivers/char/tpm/tpm_i2c_atmel.c     | 2 +-
 drivers/char/tpm/tpm_i2c_nuvoton.c   | 2 +-
 drivers/char/tpm/tpm_ibmvtpm.c       | 2 +-
 drivers/char/tpm/tpm_tis.c           | 2 +-
 drivers/char/tpm/tpm_tis_spi.c       | 3 +--
 9 files changed, 9 insertions(+), 13 deletions(-)

diff --git a/drivers/char/tpm/st33zp24/i2c.c b/drivers/char/tpm/st33zp24/i2c.c
index be5d1abd3e8e..d0cb25688485 100644
--- a/drivers/char/tpm/st33zp24/i2c.c
+++ b/drivers/char/tpm/st33zp24/i2c.c
@@ -245,8 +245,7 @@ static int st33zp24_i2c_probe(struct i2c_client *client,
 		return -ENODEV;
 	}
 
-	phy = devm_kzalloc(&client->dev, sizeof(struct st33zp24_i2c_phy),
-			   GFP_KERNEL);
+	phy = devm_kzalloc(&client->dev, sizeof(*phy), GFP_KERNEL);
 	if (!phy)
 		return -ENOMEM;
 
diff --git a/drivers/char/tpm/st33zp24/spi.c b/drivers/char/tpm/st33zp24/spi.c
index 0fc4f20b5f83..c952df9244c8 100644
--- a/drivers/char/tpm/st33zp24/spi.c
+++ b/drivers/char/tpm/st33zp24/spi.c
@@ -358,8 +358,7 @@ static int st33zp24_spi_probe(struct spi_device *dev)
 		return -ENODEV;
 	}
 
-	phy = devm_kzalloc(&dev->dev, sizeof(struct st33zp24_spi_phy),
-			   GFP_KERNEL);
+	phy = devm_kzalloc(&dev->dev, sizeof(*phy), GFP_KERNEL);
 	if (!phy)
 		return -ENOMEM;
 
diff --git a/drivers/char/tpm/st33zp24/st33zp24.c b/drivers/char/tpm/st33zp24/st33zp24.c
index 4d1dc8b46877..0686a129268c 100644
--- a/drivers/char/tpm/st33zp24/st33zp24.c
+++ b/drivers/char/tpm/st33zp24/st33zp24.c
@@ -533,8 +533,7 @@ int st33zp24_probe(void *phy_id, const struct st33zp24_phy_ops *ops,
 	if (IS_ERR(chip))
 		return PTR_ERR(chip);
 
-	tpm_dev = devm_kzalloc(dev, sizeof(struct st33zp24_dev),
-			       GFP_KERNEL);
+	tpm_dev = devm_kzalloc(dev, sizeof(*tpm_dev), GFP_KERNEL);
 	if (!tpm_dev)
 		return -ENOMEM;
 
diff --git a/drivers/char/tpm/tpm_crb.c b/drivers/char/tpm/tpm_crb.c
index 7b3c2a8aa9de..343c46e8560f 100644
--- a/drivers/char/tpm/tpm_crb.c
+++ b/drivers/char/tpm/tpm_crb.c
@@ -557,7 +557,7 @@ static int crb_acpi_add(struct acpi_device *device)
 	if (sm == ACPI_TPM2_MEMORY_MAPPED)
 		return -ENODEV;
 
-	priv = devm_kzalloc(dev, sizeof(struct crb_priv), GFP_KERNEL);
+	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
 	if (!priv)
 		return -ENOMEM;
 
diff --git a/drivers/char/tpm/tpm_i2c_atmel.c b/drivers/char/tpm/tpm_i2c_atmel.c
index 95ce2e9ccdc6..2d0df930a76d 100644
--- a/drivers/char/tpm/tpm_i2c_atmel.c
+++ b/drivers/char/tpm/tpm_i2c_atmel.c
@@ -165,7 +165,7 @@ static int i2c_atmel_probe(struct i2c_client *client,
 	if (IS_ERR(chip))
 		return PTR_ERR(chip);
 
-	priv = devm_kzalloc(dev, sizeof(struct priv_data), GFP_KERNEL);
+	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
 	if (!priv)
 		return -ENOMEM;
 
diff --git a/drivers/char/tpm/tpm_i2c_nuvoton.c b/drivers/char/tpm/tpm_i2c_nuvoton.c
index c6428771841f..5983d52eb6d9 100644
--- a/drivers/char/tpm/tpm_i2c_nuvoton.c
+++ b/drivers/char/tpm/tpm_i2c_nuvoton.c
@@ -551,7 +551,7 @@ static int i2c_nuvoton_probe(struct i2c_client *client,
 	if (IS_ERR(chip))
 		return PTR_ERR(chip);
 
-	priv = devm_kzalloc(dev, sizeof(struct priv_data), GFP_KERNEL);
+	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
 	if (!priv)
 		return -ENOMEM;
 
diff --git a/drivers/char/tpm/tpm_ibmvtpm.c b/drivers/char/tpm/tpm_ibmvtpm.c
index b18148ef2612..a4b462a77b99 100644
--- a/drivers/char/tpm/tpm_ibmvtpm.c
+++ b/drivers/char/tpm/tpm_ibmvtpm.c
@@ -608,7 +608,7 @@ static int tpm_ibmvtpm_probe(struct vio_dev *vio_dev,
 	if (IS_ERR(chip))
 		return PTR_ERR(chip);
 
-	ibmvtpm = kzalloc(sizeof(struct ibmvtpm_dev), GFP_KERNEL);
+	ibmvtpm = kzalloc(sizeof(*ibmvtpm), GFP_KERNEL);
 	if (!ibmvtpm)
 		goto cleanup;
 
diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c
index ebd0e75a3e4d..0a3af60bab2a 100644
--- a/drivers/char/tpm/tpm_tis.c
+++ b/drivers/char/tpm/tpm_tis.c
@@ -294,7 +294,7 @@ static int tpm_tis_init(struct device *dev, struct tpm_info *tpm_info)
 	if (rc)
 		return rc;
 
-	phy = devm_kzalloc(dev, sizeof(struct tpm_tis_tcg_phy), GFP_KERNEL);
+	phy = devm_kzalloc(dev, sizeof(*phy), GFP_KERNEL);
 	if (phy == NULL)
 		return -ENOMEM;
 
diff --git a/drivers/char/tpm/tpm_tis_spi.c b/drivers/char/tpm/tpm_tis_spi.c
index 424ff2fde1f2..7cabb12d0b3a 100644
--- a/drivers/char/tpm/tpm_tis_spi.c
+++ b/drivers/char/tpm/tpm_tis_spi.c
@@ -200,8 +200,7 @@ static int tpm_tis_spi_probe(struct spi_device *dev)
 {
 	struct tpm_tis_spi_phy *phy;
 
-	phy = devm_kzalloc(&dev->dev, sizeof(struct tpm_tis_spi_phy),
-			   GFP_KERNEL);
+	phy = devm_kzalloc(&dev->dev, sizeof(*phy), GFP_KERNEL);
 	if (!phy)
 		return -ENOMEM;
 
-- 
2.14.2