The patch below does not apply to the 3.2-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <[email protected]>.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

>From c1c454b8691cc95aa83f19273ed7845914c70e83 Mon Sep 17 00:00:00 2001
From: "K. Y. Srinivasan" <[email protected]>
Date: Wed, 18 Jan 2012 08:57:14 -0800
Subject: [PATCH] HID: hyperv: Properly disconnect the input device

When we unload the mouse driver, properly disconnect the input device.

Signed-off-by: K. Y. Srinivasan <[email protected]>
Signed-off-by: Haiyang Zhang <[email protected]>
Reported-by: Fuzhou Chen <[email protected]>
Cc: stable <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>

diff --git a/drivers/hid/hid-hyperv.c b/drivers/hid/hid-hyperv.c
index 0c33ae9..4066324 100644
--- a/drivers/hid/hid-hyperv.c
+++ b/drivers/hid/hid-hyperv.c
@@ -548,6 +548,7 @@ static int mousevsc_remove(struct hv_device *dev)
        struct mousevsc_dev *input_dev = hv_get_drvdata(dev);
 
        vmbus_close(dev->channel);
+       hid_hw_stop(input_dev->hid_device);
        hid_destroy_device(input_dev->hid_device);
        mousevsc_free_device(input_dev);
 

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