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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>
This commit is contained in:
Peter Hurley 2015-02-24 12:06:34 -05:00 committed by Greg Kroah-Hartman
parent 17b8f2a3fd
commit 7950dc5860
1 changed files with 3 additions and 1 deletions
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4
drivers/tty/serial/sprd_serial.c
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@ -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;