usbip: keep usbip_device sockfd state in sync with tcp_socket

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 <shuahkh@osg.samsung.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/usbip/stub_dev.c b/drivers/usb/usbip/stub_dev.c
index 49e552472c3f32ac651287f3f6e620acb7690931..dd8ef36ab10ec7d612bdb2358017f142a43906d8 100644 (file)
--- a/drivers/usb/usbip/stub_dev.c
+++ b/drivers/usb/usbip/stub_dev.c
@@ -73,6 +73,7 @@ static ssize_t usbip_sockfd_store(struct device *dev, struct device_attribute *a
                        goto err;
 
                sdev->ud.tcp_socket = socket;
+               sdev->ud.sockfd = sockfd;
 
                spin_unlock_irq(&sdev->ud.lock);
 
@@ -172,6 +173,7 @@ static void stub_shutdown_connection(struct usbip_device *ud)
        if (ud->tcp_socket) {
                sockfd_put(ud->tcp_socket);
                ud->tcp_socket = NULL;
+               ud->sockfd = -1;
        }
 
        /* 3. free used data */
@@ -266,6 +268,7 @@ static struct stub_device *stub_device_alloc(struct usb_device *udev)
        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);

diff --git a/drivers/usb/usbip/vhci_hcd.c b/drivers/usb/usbip/vhci_hcd.c
index c3e1008aa491ee45071adab6215f7440aa6dfa13..20e3d4609583848f8a14271d5c4bf3ffb8776123 100644 (file)
--- a/drivers/usb/usbip/vhci_hcd.c
+++ b/drivers/usb/usbip/vhci_hcd.c
@@ -984,6 +984,7 @@ static void vhci_shutdown_connection(struct usbip_device *ud)
        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");
 
@@ -1030,6 +1031,7 @@ static void vhci_device_reset(struct usbip_device *ud)
        if (ud->tcp_socket) {
                sockfd_put(ud->tcp_socket);
                ud->tcp_socket = NULL;
+               ud->sockfd = -1;
        }
        ud->status = VDEV_ST_NULL;