serial: of: set port iomem size from devicetree
Make the 8250 driver reserve exactly the mmio region specified
in the devicetree. This prevents conflicts between UPIO_AU type
UARTs and other devices mapped closer than the default size of
0x1000 (or 0x100 for RT2880).
Signed-off-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/tty/serial/of_serial.c b/drivers/tty/serial/of_serial.c
index d8c4eea..aa00154 100644
--- a/drivers/tty/serial/of_serial.c
+++ b/drivers/tty/serial/of_serial.c
@@ -89,6 +89,7 @@
spin_lock_init(&port->lock);
port->mapbase = resource.start;
+ port->mapsize = resource_size(&resource);
/* Check for shifted address mapping */
if (of_property_read_u32(np, "reg-offset", &prop) == 0)
