usb: gadget: pxa27x: Test for a valid argument pointer

[ Upstream commit df7545719a14fa7b481896fb8689e23d0a00f682 ]

A call usb_put_phy(udc->transceiver) must be tested for a valid pointer.
Use an already existing test for usb_unregister_notifier call.

Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Reported-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Petr Cvek <petr.cvek@tul.cz>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/gadget/udc/pxa27x_udc.c b/drivers/usb/gadget/udc/pxa27x_udc.c
index 7fa60f5..afd6b86 100644 (file)
--- a/drivers/usb/gadget/udc/pxa27x_udc.c
+++ b/drivers/usb/gadget/udc/pxa27x_udc.c
@@ -2534,9 +2534,10 @@ static int pxa_udc_remove(struct platform_device *_dev)
        usb_del_gadget_udc(&udc->gadget);
        pxa_cleanup_debugfs(udc);
 
-       if (!IS_ERR_OR_NULL(udc->transceiver))
+       if (!IS_ERR_OR_NULL(udc->transceiver)) {
                usb_unregister_notifier(udc->transceiver, &pxa27x_udc_phy);
-       usb_put_phy(udc->transceiver);
+               usb_put_phy(udc->transceiver);
+       }
 
        udc->transceiver = NULL;
        the_controller = NULL;