linux-kernel - [PATCH 3/5] serial: 8250

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Message-Id: <1354106924-11013-4-git-send-email-heikki.krogerus@linux.intel.com>
Date:	Wed, 28 Nov 2012 14:48:42 +0200
From:	Heikki Krogerus <heikki.krogerus@...ux.intel.com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	Alan Cox <alan@...ux.intel.com>, Jamie Iles <jamie@...ieiles.com>,
	linux-serial@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH 3/5] serial: 8250_dw: Map IO memory

This needs to be done in order to later access the
Designware specific registers.

Signed-off-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
---
 drivers/tty/serial/8250/8250_dw.c |    7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c
index 8d45be5..8394f85 100644
--- a/drivers/tty/serial/8250/8250_dw.c
+++ b/drivers/tty/serial/8250/8250_dw.c
@@ -111,10 +111,13 @@ static int __devinit dw8250_probe(struct platform_device *pdev)
 	uart.port.irq = irq->start;
 	uart.port.handle_irq = dw8250_handle_irq;
 	uart.port.type = PORT_8250;
-	uart.port.flags = UPF_SHARE_IRQ | UPF_BOOT_AUTOCONF | UPF_IOREMAP |
-		UPF_FIXED_PORT;
+	uart.port.flags = UPF_SHARE_IRQ | UPF_BOOT_AUTOCONF | UPF_FIXED_PORT;
 	uart.port.dev = &pdev->dev;
 
+	uart.port.membase = ioremap(regs->start, regs->end - regs->start);
+	if (!uart.port.membase)
+		return -ENOMEM;
+
 	uart.port.iotype = UPIO_MEM;
 	uart.port.serial_in = dw8250_serial_in;
 	uart.port.serial_out = dw8250_serial_out;
-- 
1.7.10.4

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