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serial: of: set port iomem size from devicetree

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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>
This commit is contained in:
Mans Rullgard 2015-03-08 14:30:05 +00:00 committed by Greg Kroah-Hartman
parent ee97d0e3f0
commit 0787691230
1 changed files with 1 additions and 0 deletions
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drivers/tty/serial/of_serial.c
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@ -89,6 +89,7 @@ static int of_platform_serial_setup(struct platform_device *ofdev,
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)