If the address provided for the UART is of an I/O port rather than
a regular memory address, then set the port iotype appropriately and
write the address to iobase rather than mapbase.
Signed-off-by: Paul Burton <paul.burton@xxxxxxxxxx>
---
drivers/tty/serial/of_serial.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/tty/serial/of_serial.c b/drivers/tty/serial/of_serial.c
index 137381e..ccff9ba 100644
--- a/drivers/tty/serial/of_serial.c
+++ b/drivers/tty/serial/of_serial.c
@@ -110,7 +110,12 @@ static int of_platform_serial_setup(struct platform_device *ofdev,
port->irq = irq_of_parse_and_map(np, 0);
port->iotype = UPIO_MEM;
- if (of_property_read_u32(np, "reg-io-width", &prop) == 0) {
+
+ if (resource.flags & IORESOURCE_IO) {
+ port->iotype = UPIO_PORT;
+ port->iobase = port->mapbase;
+ port->mapbase = 0;
+ } else if (of_property_read_u32(np, "reg-io-width", &prop) == 0) {
switch (prop) {
case 1:
port->iotype = UPIO_MEM;
--
2.4.1
--
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