Patch "xhci: refuse loading if nousb is used" has been added to the 3.14-stable tree

Patch "xhci: refuse loading if nousb is used" has been added to the 3.14-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    xhci: refuse loading if nousb is used

to the 3.14-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     xhci-refuse-loading-if-nousb-is-used.patch
and it can be found in the queue-3.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 1eaf35e4dd592c59041bc1ed3248c46326da1f5f Mon Sep 17 00:00:00 2001
From: Oliver Neukum <oneukum@suse.com>
Date: Thu, 3 Dec 2015 15:03:34 +0100
Subject: xhci: refuse loading if nousb is used

From: Oliver Neukum <oneukum@suse.com>

commit 1eaf35e4dd592c59041bc1ed3248c46326da1f5f upstream.

The module should fail to load.

Signed-off-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/usb/host/xhci.c |    4 ++++
 1 file changed, 4 insertions(+)

--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -4893,6 +4893,10 @@ static int __init xhci_hcd_init(void)
 	BUILD_BUG_ON(sizeof(struct xhci_intr_reg) != 8*32/8);
 	/* xhci_run_regs has eight fields and embeds 128 xhci_intr_regs */
 	BUILD_BUG_ON(sizeof(struct xhci_run_regs) != (8+8*128)*32/8);
+
+	if (usb_disabled())
+		return -ENODEV;
+
 	return 0;
 unreg_pci:
 	xhci_unregister_pci();


Patches currently in stable-queue which might be from oneukum@suse.com are

queue-3.14/xhci-refuse-loading-if-nousb-is-used.patch