diff options
| author |   Mika Westerberg <mika.westerberg@linux.intel.com> | 2016-03-03 11:26:18 +0200 |
|---|---|---|
| committer |   Samuel Ortiz <sameo@linux.intel.com> | 2016-03-03 10:34:45 +0100 |
| commit | dd215430dc9132fc0505cb4d5aa6dc6243ce8f9c (patch) | |
| tree | 0282c85470877919872d5feabe9637fb41065aad /drivers/nfc | |
| parent | NFC: Close a race condition in llcp_sock_getname() (diff) | |
| download | linux-dev-dd215430dc9132fc0505cb4d5aa6dc6243ce8f9c.tar.xz linux-dev-dd215430dc9132fc0505cb4d5aa6dc6243ce8f9c.zip | |
NFC: pn544: Drop two useless checks in ACPI probe path
When pn544_hci_i2c_acpi_request_resources() gets called we
already know that the entries in ->acpi_match_table have
matched ACPI ID of the device.
In addition I2C client pointer cannot be NULL in any case
(otherwise I2C core would not call ->probe() for the driver
in the first place).
Drop the two useless checks from the driver.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/nfc')
| -rw-r--r-- | drivers/nfc/pn544/i2c.c | 14 |
1 files changed, 1 insertions, 13 deletions
diff --git a/drivers/nfc/pn544/i2c.c b/drivers/nfc/pn544/i2c.c index 76c318444304..45d0e667d7ae 100644 --- a/drivers/nfc/pn544/i2c.c +++ b/drivers/nfc/pn544/i2c.c @@ -877,20 +877,8 @@ exit_state_wait_secure_write_answer: static int pn544_hci_i2c_acpi_request_resources(struct i2c_client *client) { struct pn544_i2c_phy *phy = i2c_get_clientdata(client); - const struct acpi_device_id *id; struct gpio_desc *gpiod_en, *gpiod_fw; - struct device *dev; - - if (!client) - return -EINVAL; - - dev = &client->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 = &client->dev; /* Get EN GPIO from ACPI */ gpiod_en = devm_gpiod_get_index(dev, PN544_GPIO_NAME_EN, 1, |