linux-kernel - [PATCH 4.4 083/113] usb: renesas_usbhs: gadget: fix return value check in usbhs_mod_gadget

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Message-Id: <20160905164352.735440963@linuxfoundation.org>
Date:   Mon,  5 Sep 2016 18:44:46 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
        Wei Yongjun <weiyj.lk@...il.com>,
        Felipe Balbi <felipe.balbi@...ux.intel.com>
Subject: [PATCH 4.4 083/113] usb: renesas_usbhs: gadget: fix return value check in usbhs_mod_gadget_probe()

4.4-stable review patch.  If anyone has any objections, please let me know.

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

From: Wei Yongjun <weiyj.lk@...il.com>

commit 3295235fd70ed6d594aadee8c892a14f6a4b2d2e upstream.

In case of error, the function usb_get_phy() returns ERR_PTR() and never
returns NULL. The NULL test in the return value check should be replaced
with IS_ERR().

Fixes: b5a2875605ca ("usb: renesas_usbhs: Allow an OTG PHY driver to
	provide VBUS")
Acked-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>
Signed-off-by: Wei Yongjun <weiyj.lk@...il.com>
Signed-off-by: Felipe Balbi <felipe.balbi@...ux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/usb/renesas_usbhs/mod_gadget.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/usb/renesas_usbhs/mod_gadget.c
+++ b/drivers/usb/renesas_usbhs/mod_gadget.c
@@ -1075,7 +1075,7 @@ int usbhs_mod_gadget_probe(struct usbhs_
 
 	gpriv->transceiver = usb_get_phy(USB_PHY_TYPE_UNDEFINED);
 	dev_info(dev, "%stransceiver found\n",
-		 gpriv->transceiver ? "" : "no ");
+		 !IS_ERR(gpriv->transceiver) ? "" : "no ");
 
 	/*
 	 * CAUTION