[PATCH 4.0 062/105] usb: make module xhci_hcd removable

From: Greg Kroah-Hartman
Date: Fri Jun 19 2015 - 17:12:33 EST

4.0-stable review patch. If anyone has any objections, please let me know.


From: Arthur Demchenkov <spinal.by@xxxxxxxxx>

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@xxxxxxxxx>
Reviewed-by: Andrew Bresticker <abrestic@xxxxxxxxxxxx>
Signed-off-by: Mathias Nyman <mathias.nyman@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

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) { }

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