linux-kernel - [RESEND PATCH v3] tpm: st33zp24: remove pointless checks on probe

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Message-ID: <Y4/wGWTgYfR/Jb9D@google.com>
Date:   Tue, 6 Dec 2022 17:44:57 -0800
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     Peter Huewe <peterhuewe@....de>,
        Jarkko Sakkinen <jarkko@...nel.org>
Cc:     Jason Gunthorpe <jgg@...pe.ca>, linux-integrity@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [RESEND PATCH v3] tpm: st33zp24: remove pointless checks on probe

Remove tests for SPI device or I2C client to be non-NULL because
driver core will never call driver's probe method without having
a valid device structure.

Reviewed-by: Jarkko Sakkinen <jarkko@...nel.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
---

v3: no changes
v2: reworked commit message

This was a part of a 3-patch series, the first 2 dealt with dropping
support for platform data and converting the driver to gpiod API, and
were applied, this one got reviewed-by from Jarkko but for some reason
was left out.

 drivers/char/tpm/st33zp24/i2c.c | 6 ------
 drivers/char/tpm/st33zp24/spi.c | 7 -------
 2 files changed, 13 deletions(-)

diff --git a/drivers/char/tpm/st33zp24/i2c.c b/drivers/char/tpm/st33zp24/i2c.c
index 614c7d8ed84f..8156bb2af78c 100644
--- a/drivers/char/tpm/st33zp24/i2c.c
+++ b/drivers/char/tpm/st33zp24/i2c.c
@@ -106,12 +106,6 @@ static int st33zp24_i2c_probe(struct i2c_client *client,
 {
 	struct st33zp24_i2c_phy *phy;
 
-	if (!client) {
-		pr_info("%s: i2c client is NULL. Device not accessible.\n",
-			__func__);
-		return -ENODEV;
-	}
-
 	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
 		dev_info(&client->dev, "client not i2c capable\n");
 		return -ENODEV;
diff --git a/drivers/char/tpm/st33zp24/spi.c b/drivers/char/tpm/st33zp24/spi.c
index ff4adbe104cf..2154059f0235 100644
--- a/drivers/char/tpm/st33zp24/spi.c
+++ b/drivers/char/tpm/st33zp24/spi.c
@@ -223,13 +223,6 @@ static int st33zp24_spi_probe(struct spi_device *dev)
 {
 	struct st33zp24_spi_phy *phy;
 
-	/* Check SPI platform functionnalities */
-	if (!dev) {
-		pr_info("%s: dev is NULL. Device is not accessible.\n",
-			__func__);
-		return -ENODEV;
-	}
-
 	phy = devm_kzalloc(&dev->dev, sizeof(struct st33zp24_spi_phy),
 			   GFP_KERNEL);
 	if (!phy)
-- 
2.39.0.rc0.267.gcb52ba06e7-goog


-- 
Dmitry