Patch "usb: make module xhci_hcd removable" has been added to the 4.0-stable tree

Patch "usb: make module xhci_hcd removable" has been added to the 4.0-stable tree

[gregkh]

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

    usb: make module xhci_hcd removable

to the 4.0-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:
     usb-make-module-xhci_hcd-removable.patch
and it can be found in the queue-4.0 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 b04c846ceaad42f9e37f3626c7e8f457603863f0 Mon Sep 17 00:00:00 2001
From: Arthur Demchenkov <spinal.by@gmail.com>
Date: Tue, 19 May 2015 16:30:50 +0300
Subject: usb: make module xhci_hcd removable

From: Arthur Demchenkov <spinal.by@gmail.com>

commit b04c846ceaad42f9e37f3626c7e8f457603863f0 upstream.

Fixed regression. After commit 29e409f0f761 ("xhci: Allow xHCI drivers to
be built as separate modules") the module xhci_hcd became non-removable.
That behaviour is not expected and there're no notes about it in commit
message. The module should be removable as it blocks PM suspend/resume
functions (Debian Bug#666406).

Signed-off-by: Arthur Demchenkov <spinal.by@gmail.com>
Reviewed-by: Andrew Bresticker <abrestic@chromium.org>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/usb/host/xhci.c |    8 ++++++++
 1 file changed, 8 insertions(+)

--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -5022,4 +5022,12 @@ static int __init xhci_hcd_init(void)
 	BUILD_BUG_ON(sizeof(struct xhci_run_regs) != (8+8*128)*32/8);
 	return 0;
 }
+
+/*
+ * If an init function is provided, an exit function must also be provided
+ * to allow module unload.
+ */
+static void __exit xhci_hcd_fini(void) { }
+
 module_init(xhci_hcd_init);
+module_exit(xhci_hcd_fini);


Patches currently in stable-queue which might be from spinal.by@gmail.com are

queue-4.0/usb-make-module-xhci_hcd-removable.patch
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