---

yaml --- r: 54166 b: refs/heads/master c: abb4a23 h: refs/heads/master v: v3
git-mirror · May 7, 2007 · 7b40ff2 · 7b40ff2
1 parent 41f51e5
commit 7b40ff2
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Showing 5 changed files with 19 additions and 12 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: bd71c182d5a02337305fc381831c11029dd17d64
+refs/heads/master: abb4a2390737867353ebafc012d45f2b03f3f944
diff --git a/trunk/arch/powerpc/kernel/legacy_serial.c b/trunk/arch/powerpc/kernel/legacy_serial.c
@@ -115,7 +115,8 @@ static int __init add_legacy_soc_port(struct device_node *np,
 {
 	u64 addr;
 	const u32 *addrp;
-	upf_t flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_SHARE_IRQ;
+	upf_t flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_SHARE_IRQ
+		| UPF_FIXED_PORT;
 	struct device_node *tsi = of_get_parent(np);
 
 	/* We only support ports that have a clock frequency properly

diff --git a/trunk/drivers/serial/of_serial.c b/trunk/drivers/serial/of_serial.c
@@ -48,7 +48,8 @@ static int __devinit of_platform_serial_setup(struct of_device *ofdev,
 	port->iotype = UPIO_MEM;
 	port->type = type;
 	port->uartclk = *clk;
-	port->flags = UPF_SHARE_IRQ | UPF_BOOT_AUTOCONF | UPF_IOREMAP;
+	port->flags = UPF_SHARE_IRQ | UPF_BOOT_AUTOCONF | UPF_IOREMAP
+		| UPF_FIXED_PORT;
 	port->dev = &ofdev->dev;
 	port->custom_divisor = *clk / (16 * (*spd));
 

diff --git a/trunk/drivers/serial/serial_core.c b/trunk/drivers/serial/serial_core.c
@@ -672,19 +672,21 @@ 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 +798,10 @@ 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;

diff --git a/trunk/include/linux/serial_core.h b/trunk/include/linux/serial_core.h
@@ -263,6 +263,7 @@ struct uart_port {
 #define UPF_CONS_FLOW		((__force upf_t) (1 << 23))
 #define UPF_SHARE_IRQ		((__force upf_t) (1 << 24))
 #define UPF_BOOT_AUTOCONF	((__force upf_t) (1 << 28))
+#define UPF_FIXED_PORT		((__force upf_t) (1 << 29))
 #define UPF_DEAD		((__force upf_t) (1 << 30))
 #define UPF_IOREMAP		((__force upf_t) (1 << 31))