PTY: add kernel parameter to overwrite legacy pty count

[linux-2.6-omap-h63xx.git] / drivers / char / pty.c

diff --git a/drivers/char/pty.c b/drivers/char/pty.c
index de14aea34e11f215765c8b718efe65ff595e795a..73de77105fea9c9a58c8ed704fab7626b2bfb2d1 100644 (file)
--- a/drivers/char/pty.c
+++ b/drivers/char/pty.c
@@ -248,14 +248,19 @@ static int pty_bsd_ioctl(struct tty_struct *tty, struct file *file,
        return -ENOIOCTLCMD;
 }
 
+static int legacy_count = CONFIG_LEGACY_PTY_COUNT;
+module_param(legacy_count, int, 0);
+
 static void __init legacy_pty_init(void)
 {
+       if (legacy_count <= 0)
+               return;
 
-       pty_driver = alloc_tty_driver(NR_PTYS);
+       pty_driver = alloc_tty_driver(legacy_count);
        if (!pty_driver)
                panic("Couldn't allocate pty driver");
 
-       pty_slave_driver = alloc_tty_driver(NR_PTYS);
+       pty_slave_driver = alloc_tty_driver(legacy_count);
        if (!pty_slave_driver)
                panic("Couldn't allocate pty slave driver");