From d656fa32b13424701bb85f6b5183ea869b363799 Mon Sep 17 00:00:00 2001
From: Felipe Balbi <felipe.balbi@linux.intel.com>
Date: Thu, 9 Nov 2017 12:59:58 +0200
Subject: [PATCH] usb: core: message: remember to reset 'ret' to 0 when
necessary
usb_control_msg() will return the amount of bytes transferred, if that
amount matches what we wanted to transfer, we need to reset 'ret' to 0
from usb_get_status().
Fixes: 2e43f0fe379c ("usb: core: add a 'type' parameter to usb_get_status()")
Reported-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/core/message.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c
index ebaea514161f6..77001bcfc504e 100644
--- a/drivers/usb/core/message.c
+++ b/drivers/usb/core/message.c
@@ -975,6 +975,7 @@ int usb_get_status(struct usb_device *dev, int recip, int type, int target,
}
*(u32 *) data = le32_to_cpu(*(__le32 *) status);
+ ret = 0;
break;
case 2:
if (type != USB_STATUS_TYPE_STANDARD) {
@@ -983,6 +984,7 @@ int usb_get_status(struct usb_device *dev, int recip, int type, int target,
}
*(u16 *) data = le16_to_cpu(*(__le16 *) status);
+ ret = 0;
break;
default:
ret = -EIO;
--
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