tpm/st33zp24/spi: Drop two useless checks in ACPI probe path

cricard13 · Jarkko Sakkinen · commit d2333d186c0e · 2016-04-14T13:15:44.000+03:00
When st33zp24_spi_acpi_request_resources() gets called we
already know that the entries in -&gt;acpi_match_table have matched ACPI ID
of the device.
In addition spi_device pointer cannot be NULL in any case (otherwise I2C
core would not call -&gt;probe() for the driver in the first place).

Drop the two useless checks from the driver.

Signed-off-by: Christophe Ricard &lt;christophe-h.ricard@st.com&gt;
Reviewed-by: Jarkko Sakkinen &lt;jarkko.sakkinen@linux.intel.com&gt;
Signed-off-by: Jarkko Sakkinen &lt;jarkko.sakkinen@linux.intel.com&gt;
diff --git a/drivers/char/tpm/st33zp24/spi.c b/drivers/char/tpm/st33zp24/spi.c
@@ -232,19 +232,8 @@ static const struct st33zp24_phy_ops spi_phy_ops = {
 static int st33zp24_spi_acpi_request_resources(struct spi_device *spi_dev)
 {
 	struct st33zp24_spi_phy *phy = spi_get_drvdata(spi_dev);
-	const struct acpi_device_id *id;
 	struct gpio_desc *gpiod_lpcpd;
-	struct device *dev;
-
-	if (!spi_dev)
-		return -EINVAL;
-
-	dev = &spi_dev->dev;
-
-	/* Match the struct device against a given list of ACPI IDs */
-	id = acpi_match_device(dev->driver->acpi_match_table, dev);
-	if (!id)
-		return -ENODEV;
+	struct device *dev = &spi_dev->dev;
 
 	/* Get LPCPD GPIO from ACPI */
 	gpiod_lpcpd = devm_gpiod_get_index(dev, "TPM IO LPCPD", 1,
