Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / staging / dgnc / dgnc_utils.c

diff --git a/kernel/drivers/staging/dgnc/dgnc_utils.c b/kernel/drivers/staging/dgnc/dgnc_utils.c
new file mode 100644 (file)
index 0000000..f76de82
--- /dev/null
+++ b/kernel/drivers/staging/dgnc/dgnc_utils.c
@@ -0,0 +1,18 @@
+#include <linux/tty.h>
+#include <linux/sched.h>
+#include "dgnc_utils.h"
+#include "digi.h"
+
+/*
+ * dgnc_ms_sleep()
+ *
+ * Put the driver to sleep for x ms's
+ *
+ * Returns 0 if timed out, !0 (showing signal) if interrupted by a signal.
+ */
+int dgnc_ms_sleep(ulong ms)
+{
+       __set_current_state(TASK_INTERRUPTIBLE);
+       schedule_timeout((ms * HZ) / 1000);
+       return signal_pending(current);
+}