Staging: usbip: usbip_start_threads(): handle kernel_thread failure

kernel_thread may fail, notice this.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 14 insertions, 2 deletions

diff --git a/drivers/staging/usbip/usbip_common.c b/drivers/staging/usbip/usbip_common.c
index 72e209276ea7..22f93dd0ba03 100644
--- a/drivers/staging/usbip/usbip_common.c
+++ b/drivers/staging/usbip/usbip_common.c
@@ -406,8 +406,20 @@ void usbip_start_threads(struct usbip_device *ud)
         /*
          * threads are invoked per one device (per one connection).
          */
-        kernel_thread(usbip_thread, (void *)&ud->tcp_rx, 0);
-        kernel_thread(usbip_thread, (void *)&ud->tcp_tx, 0);
+        int retval;
+
+        retval = kernel_thread(usbip_thread, (void *)&ud->tcp_rx, 0);
+        if (retval < 0) {
+                printk(KERN_ERR "Creating tcp_rx thread for ud %p failed.\n",
+                                ud);
+                return;
+        }
+        retval = kernel_thread(usbip_thread, (void *)&ud->tcp_tx, 0);
+        if (retval < 0) {
+                printk(KERN_ERR "Creating tcp_tx thread for ud %p failed.\n",
+                                ud);
+                return;
+        }
 
         /* confirm threads are starting */
         wait_for_completion(&ud->tcp_rx.thread_done);