[34-longterm 251/260] USB: atmel_usba_udc: force vbus_pin at -EINVAL when gpio_request failled

[Paul Gortmaker]

From: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@xxxxxxxxxxxx>

commit 969affff54702785330de553b790372e261e93f9 upstream.

to ensure gpio_is_valid return false

Signed-off-by: Nicolas Ferre <nicolas.ferre@xxxxxxxxx>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@xxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>
Signed-off-by: Paul Gortmaker <paul.gortmaker@xxxxxxxxxxxxx>
---
 drivers/usb/gadget/atmel_usba_udc.c |    3 +++
 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 75a256f..8fd88e1 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;
 		}
 	}
 
-- 
1.7.3.3

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