3.16.57-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Shuah Khan <[email protected]>

commit 009f41aed4b3e11e6dc1e3c07377a10c20f1a5ed upstream.

Keep usbip_device sockfd state in sync with tcp_socket. When tcp_socket
is reset to null, reset sockfd to -1 to keep it in sync.

Signed-off-by: Shuah Khan <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
[bwh: Backported to 3.16: adjust filenames]
Signed-off-by: Ben Hutchings <[email protected]>
---
 drivers/staging/usbip/stub_dev.c | 3 +++
 drivers/staging/usbip/vhci_hcd.c | 2 ++
 2 files changed, 5 insertions(+)

--- a/drivers/staging/usbip/stub_dev.c
+++ b/drivers/staging/usbip/stub_dev.c
@@ -114,6 +114,7 @@ static ssize_t store_sockfd(struct devic
                        goto err;
 
                sdev->ud.tcp_socket = socket;
+               sdev->ud.sockfd = sockfd;
 
                spin_unlock_irq(&sdev->ud.lock);
 
@@ -213,6 +214,7 @@ static void stub_shutdown_connection(str
        if (ud->tcp_socket) {
                sockfd_put(ud->tcp_socket);
                ud->tcp_socket = NULL;
+               ud->sockfd = -1;
        }
 
        /* 3. free used data */
@@ -307,6 +309,7 @@ static struct stub_device *stub_device_a
        sdev->ud.status         = SDEV_ST_AVAILABLE;
        spin_lock_init(&sdev->ud.lock);
        sdev->ud.tcp_socket     = NULL;
+       sdev->ud.sockfd         = -1;
 
        INIT_LIST_HEAD(&sdev->priv_init);
        INIT_LIST_HEAD(&sdev->priv_tx);
--- a/drivers/staging/usbip/vhci_hcd.c
+++ b/drivers/staging/usbip/vhci_hcd.c
@@ -786,6 +786,7 @@ static void vhci_shutdown_connection(str
        if (vdev->ud.tcp_socket) {
                sockfd_put(vdev->ud.tcp_socket);
                vdev->ud.tcp_socket = NULL;
+               vdev->ud.sockfd = -1;
        }
        pr_info("release socket\n");
 
@@ -833,6 +834,7 @@ static void vhci_device_reset(struct usb
        if (ud->tcp_socket) {
                sockfd_put(ud->tcp_socket);
                ud->tcp_socket = NULL;
+               ud->sockfd = -1;
        }
        ud->status = VDEV_ST_NULL;
 

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