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| author | Christophe Ricard <christophe.ricard@gmail.com> | 2016-04-30 09:12:34 +0200 |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2016-05-04 01:23:30 +0200 |
| commit | b58afe6d6d3a53af165d5946f12c4b08c95acd58 (patch) | |
| tree | 54edd9fe92a25790f4ca49ccfd8db5db691c9617 /drivers/nfc | |
| parent | dfeb87df484d609aadef810dbb819830f5f9052a (diff) | |
| download | linux-b58afe6d6d3a53af165d5946f12c4b08c95acd58.tar.gz linux-b58afe6d6d3a53af165d5946f12c4b08c95acd58.tar.bz2 linux-b58afe6d6d3a53af165d5946f12c4b08c95acd58.zip | |
nfc: st21nfca: Fix static checker warning
Fix static checker warning:
drivers/nfc/st21nfca/i2c.c:530 st21nfca_hci_i2c_acpi_request_resources()
error: 'gpiod_ena' dereferencing possible ERR_PTR()
Fix so that if no enable gpio can be retrieved an -ENODEV is returned.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Fixes: dfa8070d7f64 ("nfc: st21nfca: Add support for acpi probing for i2c device.")
Cc: stable@vger.kernel.org
Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/nfc')
| -rw-r--r-- | drivers/nfc/st21nfca/i2c.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/nfc/st21nfca/i2c.c b/drivers/nfc/st21nfca/i2c.c index 640b4de05793..36645dcbe775 100644 --- a/drivers/nfc/st21nfca/i2c.c +++ b/drivers/nfc/st21nfca/i2c.c @@ -524,8 +524,10 @@ static int st21nfca_hci_i2c_acpi_request_resources(struct i2c_client *client) /* Get EN GPIO from ACPI */ gpiod_ena = devm_gpiod_get_index(dev, ST21NFCA_GPIO_NAME_EN, 1, GPIOD_OUT_LOW); - if (!IS_ERR(gpiod_ena)) - phy->gpio_ena = desc_to_gpio(gpiod_ena); + if (!IS_ERR(gpiod_ena)) { + nfc_err(dev, "Unable to get ENABLE GPIO\n"); + return -ENODEV; + } phy->gpio_ena = desc_to_gpio(gpiod_ena); |