drm: bridge: dw-hdmi: optimize edid reading process

[firefly-linux-kernel-4.4.55.git] / drivers / hv / hv_fcopy.c

diff --git a/drivers/hv/hv_fcopy.c b/drivers/hv/hv_fcopy.c
index c37a71e13de093ada851cf91c9e9851bb964f68a..1fb02dcbc5006b5797cd40e505a6f36569b46840 100644 (file)
--- a/drivers/hv/hv_fcopy.c
+++ b/drivers/hv/hv_fcopy.c
@@ -61,6 +61,7 @@ static DECLARE_WORK(fcopy_send_work, fcopy_send_data);
 static const char fcopy_devname[] = "vmbus/hv_fcopy";
 static u8 *recv_buffer;
 static struct hvutil_transport *hvt;
+static struct completion release_event;
 /*
  * This state maintains the version number registered by the daemon.
  */
@@ -312,12 +313,14 @@ static void fcopy_on_reset(void)
 
        if (cancel_delayed_work_sync(&fcopy_timeout_work))
                fcopy_respond_to_host(HV_E_FAIL);
+       complete(&release_event);
 }
 
 int hv_fcopy_init(struct hv_util_service *srv)
 {
        recv_buffer = srv->recv_buffer;
 
+       init_completion(&release_event);
        /*
         * When this driver loads, the user level daemon that
         * processes the host requests may not yet be running.
@@ -339,4 +342,5 @@ void hv_fcopy_deinit(void)
        fcopy_transaction.state = HVUTIL_DEVICE_DYING;
        cancel_delayed_work_sync(&fcopy_timeout_work);
        hvutil_transport_destroy(hvt);
+       wait_for_completion(&release_event);
 }