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Ip=[66.35.236.236]; Helo=[sj-itexedge04.altera.priv.altera.com] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BL2PR03MB273 Sender: linux-gpio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org From: Thor Thayer Confirm the chip->parent is valid before dereferencing because the parent parameter is optional. Signed-off-by: Thor Thayer --- drivers/gpio/gpiolib-devprop.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpio/gpiolib-devprop.c b/drivers/gpio/gpiolib-devprop.c index 17bfc41..27f383b 100644 --- a/drivers/gpio/gpiolib-devprop.c +++ b/drivers/gpio/gpiolib-devprop.c @@ -31,6 +31,11 @@ void devprop_gpiochip_set_names(struct gpio_chip *chip) const char **names; int ret, i; + if (!chip->parent) { + dev_warn(&gdev->dev, "GPIO chip parent is NULL\n"); + return; + } + ret = device_property_read_string_array(chip->parent, "gpio-line-names", NULL, 0); if (ret < 0)