[PATCH 17/18] USB: otg: Fix bug on remove path without transceiver

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From: Robert Jarzmik <robert.jarzmik@xxxxxxx>

In the case where a gadget driver is removed while no
transceiver was found at probe time, a bug in
otg_put_transceiver() will trigger.

Provide symetric calls for otg_get_transceiver() and
otg_put_transceiver(), wherever a transceiver was found or
not.

Signed-off-by: Robert Jarzmik <robert.jarzmik@xxxxxxx>
Acked-by: David Brownell <dbrownell@xxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>
---
 drivers/usb/otg/otg.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/drivers/usb/otg/otg.c b/drivers/usb/otg/otg.c
index ff318fa..0a43a7d 100644
--- a/drivers/usb/otg/otg.c
+++ b/drivers/usb/otg/otg.c
@@ -43,7 +43,8 @@ EXPORT_SYMBOL(otg_get_transceiver);
  */
 void otg_put_transceiver(struct otg_transceiver *x)
 {
-	put_device(x->dev);
+	if (x)
+		put_device(x->dev);
 }
 EXPORT_SYMBOL(otg_put_transceiver);
 
-- 
1.6.2.4

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