From: Arthur Demchenkov <spinal.by@gmail.com>
Date: Tue, 19 May 2015 13:30:50 +0000 (+0300)
Subject: usb: make module xhci_hcd removable
X-Git-Tag: v4.1-rc7~5^2~4
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=b04c846ceaad42f9e37f3626c7e8f457603863f0;p=karo-tx-linux.git

usb: make module xhci_hcd removable

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>
Cc: <stable@vger.kernel.org> # v3.18+
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index ec8ac1674854..4299cbf47793 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -5011,4 +5011,12 @@ 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);