linux-kernel - [PATCH] usb: cdns3: Error out if USB_DR_MODE_UNKNOWN in cdns3_core_init

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Message-ID: <20191017075801.8734-1-rogerq@ti.com>
Date:   Thu, 17 Oct 2019 10:58:01 +0300
From:   Roger Quadros <rogerq@...com>
To:     <felipe.balbi@...ux.intel.com>, <gregkh@...uxfoundation.org>
CC:     <pawell@...ence.com>, <peter.chen@....com>, <nsekhar@...com>,
        <kurahul@...ence.com>, <linux-usb@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, Roger Quadros <rogerq@...com>
Subject: [PATCH] usb: cdns3: Error out if USB_DR_MODE_UNKNOWN in cdns3_core_init_role()

USB_DR_MODE_UNKNOWN should be treated as error as it is done in
cdns3_drd_update_mode().

Fixes: 02ffc26df96b ("usb: cdns3: fix cdns3_core_init_role()")
Signed-off-by: Roger Quadros <rogerq@...com>
---
 drivers/usb/cdns3/core.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/cdns3/core.c b/drivers/usb/cdns3/core.c
index 1109dc5a4c39..c2123ef8d8a3 100644
--- a/drivers/usb/cdns3/core.c
+++ b/drivers/usb/cdns3/core.c
@@ -166,7 +166,6 @@ static int cdns3_core_init_role(struct cdns3 *cdns)
 		goto err;
 
 	switch (cdns->dr_mode) {
-	case USB_DR_MODE_UNKNOWN:
 	case USB_DR_MODE_OTG:
 		ret = cdns3_hw_role_switch(cdns);
 		if (ret)
@@ -182,6 +181,9 @@ static int cdns3_core_init_role(struct cdns3 *cdns)
 		if (ret)
 			goto err;
 		break;
+	default:
+		ret = -EINVAL;
+		goto err;
 	}
 
 	return ret;
-- 
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