linux-kernel - [45/82] USB: atmel_usba_udc: force vbus_pin at -EINVAL when gpio

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Date:	Fri, 19 Nov 2010 13:56:06 -0800
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Nicolas Ferre <nicolas.ferre@...el.com>,
	Jean-Christophe PLAGNIOL-VILLARD <plagnioj@...osoft.com>
Subject: [45/82] USB: atmel_usba_udc: force vbus_pin at -EINVAL when gpio_request failled

2.6.35-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@...osoft.com>

commit 969affff54702785330de553b790372e261e93f9 upstream.

to ensure gpio_is_valid return false

Signed-off-by: Nicolas Ferre <nicolas.ferre@...el.com>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@...osoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 drivers/usb/gadget/atmel_usba_udc.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/usb/gadget/atmel_usba_udc.c
+++ b/drivers/usb/gadget/atmel_usba_udc.c
@@ -2014,6 +2014,9 @@ static int __init usba_udc_probe(struct
 			} else {
 				disable_irq(gpio_to_irq(udc->vbus_pin));
 			}
+		} else {
+			/* gpio_request fail so use -EINVAL for gpio_is_valid */
+			ubc->vbus_pin = -EINVAL;
 		}
 	}
 


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