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authorChristophe Ricard <christophe.ricard@gmail.com>2016-04-30 09:12:34 +0200
committerSamuel Ortiz <sameo@linux.intel.com>2016-05-04 01:23:30 +0200
commitb58afe6d6d3a53af165d5946f12c4b08c95acd58 (patch)
tree54edd9fe92a25790f4ca49ccfd8db5db691c9617 /drivers/nfc
parentnfc: Drop owner assignment from i2c_driver (diff)
downloadlinux-b58afe6d6d3a53af165d5946f12c4b08c95acd58.tar.xz
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.c6
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);