#include <linux/mutex.h>
#include <linux/poll.h>
+#undef TTY_DEBUG_HANGUP
+#ifdef TTY_DEBUG_HANGUP
+# define tty_debug_hangup(tty, f, args...) tty_debug(tty, f, ##args)
+#else
+# define tty_debug_hangup(tty, f, args...) do {} while (0)
+#endif
#ifdef CONFIG_UNIX98_PTYS
static struct tty_driver *ptm_driver;
if (retval)
goto err_release;
+ tty_debug_hangup(tty, "(tty count=%d)\n", tty->count);
+
tty_unlock(tty);
return 0;
err_release: