From: Marc Singer <elf@buici.com>
Date: Tue, 16 May 2006 10:41:29 +0000 (+0100)
Subject: [ARM] 3402/1: lpd7a40x: serial driver bug fix
X-Git-Tag: v3.12-rc1~35883^2~19
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=fb62c5a7043617dd9d678beafc368b217aa28da4;p=kernel%2Fkernel-generic.git

[ARM] 3402/1: lpd7a40x: serial driver bug fix

Patch from Marc Singer

The serial driver now sets up the third UART when it is to be used.

Signed-off-by: Marc Singer <elf@buici.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---

diff --git a/drivers/serial/serial_lh7a40x.c b/drivers/serial/serial_lh7a40x.c
index aa521b8..776d4ff 100644
--- a/drivers/serial/serial_lh7a40x.c
+++ b/drivers/serial/serial_lh7a40x.c
@@ -145,14 +145,15 @@ lh7a40xuart_rx_chars (struct uart_port* port)
 {
 	struct tty_struct* tty = port->info->tty;
 	int cbRxMax = 256;	/* (Gross) limit on receive */
-	unsigned int data, flag;/* Received data and status */
+	unsigned int data;	/* Received data and status */
+	unsigned int flag;
 
 	while (!(UR (port, UART_R_STATUS) & nRxRdy) && --cbRxMax) {
 		data = UR (port, UART_R_DATA);
 		flag = TTY_NORMAL;
 		++port->icount.rx;
 
-		if (unlikely(data & RxError)) {	/* Quick check, short-circuit */
+		if (unlikely(data & RxError)) {
 			if (data & RxBreak) {
 				data &= ~(RxFramingError | RxParityError);
 				++port->icount.brk;
@@ -303,7 +304,7 @@ static void lh7a40xuart_set_mctrl (struct uart_port* port, unsigned int mctrl)
 	/* Note, kernel appears to be setting DTR and RTS on console. */
 
 	/* *** FIXME: this deserves more work.  There's some work in
-               tracing all of the IO pins. */
+	       tracing all of the IO pins. */
 #if 0
 	if( port->mapbase == UART1_PHYS) {
 		gpioRegs_t *gpio = (gpioRegs_t *)IO_ADDRESS(GPIO_PHYS);
@@ -662,9 +663,13 @@ static int __init lh7a40xuart_init(void)
 	if (ret == 0) {
 		int i;
 
-		for (i = 0; i < DEV_NR; i++)
+		for (i = 0; i < DEV_NR; i++) {
+			/* UART3, when used, requires GPIO pin reallocation */
+			if (lh7a40x_ports[i].port.mapbase == UART3_PHYS)
+				GPIO_PINMUX |= 1<<3;
 			uart_add_one_port (&lh7a40x_reg,
 					   &lh7a40x_ports[i].port);
+		}
 	}
 	return ret;
 }