From: Peter Hurley <peter@hurleysoftware.com>
Date: Tue, 24 Feb 2015 17:06:34 +0000 (-0500)
Subject: serial: sprd: Fix iotype
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=7950dc586092d0c7a8b881188061cc3dc133d7e9;p=openwrt%2Fstaging%2Fblogic.git

serial: sprd: Fix iotype

The Spreadtrum UART is accessed with mmio; declare the proper iotype.
Also prevent userspace from assigning any other iotype via
ioctl(TIOCSSERIAL).

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/tty/serial/sprd_serial.c b/drivers/tty/serial/sprd_serial.c
index be3ed3f4ad60..2e6d63eabb2e 100644
--- a/drivers/tty/serial/sprd_serial.c
+++ b/drivers/tty/serial/sprd_serial.c
@@ -491,6 +491,8 @@ static int sprd_verify_port(struct uart_port *port,
 		return -EINVAL;
 	if (port->irq != ser->irq)
 		return -EINVAL;
+	if (port->iotype != ser->io_type)
+		return -EINVAL;
 	return 0;
 }
 
@@ -705,7 +707,7 @@ static int sprd_probe(struct platform_device *pdev)
 	up->dev = &pdev->dev;
 	up->line = index;
 	up->type = PORT_SPRD;
-	up->iotype = SERIAL_IO_PORT;
+	up->iotype = UPIO_MEM;
 	up->uartclk = SPRD_DEF_RATE;
 	up->fifosize = SPRD_FIFO_SIZE;
 	up->ops = &serial_sprd_ops;