USB: bcma: Add a check for devm_gpiod_get

bcma_hcd_probe misses a check for devm_gpiod_get and may miss
the error.
Add a check for it and return the error if a failure occurs.

Signed-off-by: Chuhong Yuan <hslester96@gmail.com>
Link: https://lore.kernel.org/r/20191016083531.5734-1-hslester96@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/host/bcma-hcd.c b/drivers/usb/host/bcma-hcd.c
index 2400a82..652fa29 100644 (file)
--- a/drivers/usb/host/bcma-hcd.c
+++ b/drivers/usb/host/bcma-hcd.c
@@ -406,9 +406,12 @@ static int bcma_hcd_probe(struct bcma_device *core)
                return -ENOMEM;
        usb_dev->core = core;
 
-       if (core->dev.of_node)
+       if (core->dev.of_node) {
                usb_dev->gpio_desc = devm_gpiod_get(&core->dev, "vcc",
                                                    GPIOD_OUT_HIGH);
+               if (IS_ERR(usb_dev->gpio_desc))
+                       return PTR_ERR(usb_dev->gpio_desc);
+       }
 
        switch (core->id.id) {
        case BCMA_CORE_USB20_HOST: