[PATCH] Fix serial_match_port() for dynamic major tty-device numbers
From: Guennadi Liakhovetski <hidden>
Date: 2008-06-21 22:45:38
Also in:
lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
As reported by Vipul Gandhi, the current serial_match_port() doesn't work for tty-devices using dynamic major number allocation. Fix it. Signed-off-by: Guennadi Liakhovetski <redacted> Tested-by: Vipul Gandhi <redacted> ---
diff --git a/drivers/serial/serial_core.c b/drivers/serial/serial_core.c
index 0f5a179..593ae85 100644
--- a/drivers/serial/serial_core.c
+++ b/drivers/serial/serial_core.c@@ -1949,7 +1949,9 @@ struct uart_match { static int serial_match_port(struct device *dev, void *data) { struct uart_match *match = data; - dev_t devt = MKDEV(match->driver->major, match->driver->minor) + match->port->line; + struct tty_driver *tty_drv = match->driver->tty_driver; + dev_t devt = MKDEV(tty_drv->major, tty_drv->minor_start) + + match->port->line; return dev->devt == devt; /* Actually, only one tty per port */ }