linux-kernel - [PATCH 2/2] usb: Set unused ports to "fixed" rather than "unknown"

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Date:	Wed,  8 Apr 2015 16:36:01 -0700
From:	Matthew Garrett <mjg59@...eos.com>
To:	gregkh@...uxfoundation.org
Cc:	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
	Matthew Garrett <mjg59@...eos.com>
Subject: [PATCH 2/2] usb: Set unused ports to "fixed" rather than "unknown"

The Microsoft document "Using ACPI to Configure USB Ports on a Computer"
makes it clear that the removable flag will be cleared on ports that are
marked as unused by the firmware. Handle this case to match.

Signed-off-by: Matthew Garrett <mjg59@...eos.com>
---
 drivers/usb/core/hub.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index ac33fdd..8166bcc 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -2359,8 +2359,11 @@ static void set_usb_port_removable(struct usb_device *udev)
 		udev->removable = USB_DEVICE_REMOVABLE;
 		return;
 	case USB_PORT_CONNECT_TYPE_HARD_WIRED:
+	case USB_PORT_NOT_USED:
 		udev->removable = USB_DEVICE_FIXED;
 		return;
+	default:
+		break;
 	}
 
 	/*
-- 
2.3.4

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