X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fserial%2Fserial_core.c;h=9c57486c2e7fe20783b004dad25475b4cc805358;hb=5c4c1489b93c9dc51cc6e97fd73e325ce94983c0;hp=0422c0f1f85207715ebe221d182de4f48f85b655;hpb=b0138a6cb7923a997d278b47c176778534d1095b;p=linux-2.6

diff --git a/drivers/serial/serial_core.c b/drivers/serial/serial_core.c
index 0422c0f1f8..9c57486c2e 100644
--- a/drivers/serial/serial_core.c
+++ b/drivers/serial/serial_core.c
@@ -37,13 +37,6 @@
 #include <asm/irq.h>
 #include <asm/uaccess.h>
 
-#undef	DEBUG
-#ifdef DEBUG
-#define DPRINTK(x...)	printk(x)
-#else
-#define DPRINTK(x...)	do { } while (0)
-#endif
-
 /*
  * This is used to lock changes in serial line configuration.
  */
@@ -552,7 +545,7 @@ static void uart_flush_buffer(struct tty_struct *tty)
 		return;
 	}
 
-	DPRINTK("uart_flush_buffer(%d) called\n", tty->index);
+	pr_debug("uart_flush_buffer(%d) called\n", tty->index);
 
 	spin_lock_irqsave(&port->lock, flags);
 	uart_circ_clear(&state->info->xmit);
@@ -672,19 +665,21 @@ static int uart_set_info(struct uart_state *state,
 	 */
 	mutex_lock(&state->mutex);
 
-	change_irq  = new_serial.irq != port->irq;
+	change_irq  = !(port->flags & UPF_FIXED_PORT)
+		&& new_serial.irq != port->irq;
 
 	/*
 	 * Since changing the 'type' of the port changes its resource
 	 * allocations, we should treat type changes the same as
 	 * IO port changes.
 	 */
-	change_port = new_port != port->iobase ||
-		      (unsigned long)new_serial.iomem_base != port->mapbase ||
-		      new_serial.hub6 != port->hub6 ||
-		      new_serial.io_type != port->iotype ||
-		      new_serial.iomem_reg_shift != port->regshift ||
-		      new_serial.type != port->type;
+	change_port = !(port->flags & UPF_FIXED_PORT)
+		&& (new_port != port->iobase ||
+		    (unsigned long)new_serial.iomem_base != port->mapbase ||
+		    new_serial.hub6 != port->hub6 ||
+		    new_serial.io_type != port->iotype ||
+		    new_serial.iomem_reg_shift != port->regshift ||
+		    new_serial.type != port->type);
 
 	old_flags = port->flags;
 	new_flags = new_serial.flags;
@@ -796,8 +791,10 @@ static int uart_set_info(struct uart_state *state,
 		}
 	}
 
-	port->irq              = new_serial.irq;
-	port->uartclk          = new_serial.baud_base * 16;
+	if (change_irq)
+		port->irq      = new_serial.irq;
+	if (!(port->flags & UPF_FIXED_PORT))
+		port->uartclk  = new_serial.baud_base * 16;
 	port->flags            = (port->flags & ~UPF_CHANGE_MASK) |
 				 (new_flags & UPF_CHANGE_MASK);
 	port->custom_divisor   = new_serial.custom_divisor;
@@ -1220,7 +1217,7 @@ static void uart_close(struct tty_struct *tty, struct file *filp)
 
 	port = state->port;
 
-	DPRINTK("uart_close(%d) called\n", port->line);
+	pr_debug("uart_close(%d) called\n", port->line);
 
 	mutex_lock(&state->mutex);
 
@@ -1339,7 +1336,7 @@ static void uart_wait_until_sent(struct tty_struct *tty, int timeout)
 
 	expire = jiffies + timeout;
 
-	DPRINTK("uart_wait_until_sent(%d), jiffies=%lu, expire=%lu...\n",
+	pr_debug("uart_wait_until_sent(%d), jiffies=%lu, expire=%lu...\n",
 	        port->line, jiffies, expire);
 
 	/*
@@ -1368,7 +1365,7 @@ static void uart_hangup(struct tty_struct *tty)
 	struct uart_state *state = tty->driver_data;
 
 	BUG_ON(!kernel_locked());
-	DPRINTK("uart_hangup(%d)\n", state->port->line);
+	pr_debug("uart_hangup(%d)\n", state->port->line);
 
 	mutex_lock(&state->mutex);
 	if (state->info && state->info->flags & UIF_NORMAL_ACTIVE) {
@@ -1566,7 +1563,7 @@ static int uart_open(struct tty_struct *tty, struct file *filp)
 	int retval, line = tty->index;
 
 	BUG_ON(!kernel_locked());
-	DPRINTK("uart_open(%d) called\n", line);
+	pr_debug("uart_open(%d) called\n", line);
 
 	/*
 	 * tty->driver->num won't change, so we won't fail here with
@@ -1913,6 +1910,12 @@ uart_set_options(struct uart_port *port, struct console *co,
 	if (flow == 'r')
 		termios.c_cflag |= CRTSCTS;
 
+	/*
+	 * some uarts on other side don't support no flow control.
+	 * So we set * DTR in host uart to make them happy
+	 */
+	port->mctrl |= TIOCM_DTR;
+
 	port->ops->set_termios(port, &termios, NULL);
 	co->cflag = termios.c_cflag;
 
@@ -2064,6 +2067,7 @@ uart_report_port(struct uart_driver *drv, struct uart_port *port)
 	case UPIO_MEM32:
 	case UPIO_AU:
 	case UPIO_TSI:
+	case UPIO_DWAPB:
 		snprintf(address, sizeof(address),
 			 "MMIO 0x%lx", port->mapbase);
 		break;
@@ -2409,6 +2413,7 @@ int uart_match_port(struct uart_port *port1, struct uart_port *port2)
 	case UPIO_MEM32:
 	case UPIO_AU:
 	case UPIO_TSI:
+	case UPIO_DWAPB:
 		return (port1->mapbase == port2->mapbase);
 	}
 	return 0;