USB: atmel_usba_udc: force vbus_pin at -EINVAL when gpio_request failled

to ensure gpio_is_valid return false

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/usb/gadget/atmel_usba_udc.c b/drivers/usb/gadget/atmel_usba_udc.c
index e4810c6a0b1f..b5e20e873cba 100644
--- a/drivers/usb/gadget/atmel_usba_udc.c
+++ b/drivers/usb/gadget/atmel_usba_udc.c
@@ -2015,6 +2015,9 @@ static int __init usba_udc_probe(struct platform_device *pdev)
                         } else {
                                 disable_irq(gpio_to_irq(udc->vbus_pin));
                         }
+                } else {
+                        /* gpio_request fail so use -EINVAL for gpio_is_valid */
+                        ubc->vbus_pin = -EINVAL;
                 }
         }