Pull misc into release branch

[linux-2.6-omap-h63xx.git] / drivers / serial / amba-pl011.c

diff --git a/drivers/serial/amba-pl011.c b/drivers/serial/amba-pl011.c
index 9a3b374b2a08d89399b91d75cd613351b83978bf..72229df9dc111754a74de5b1e3fb4eb896d8768e 100644 (file)
--- a/drivers/serial/amba-pl011.c
+++ b/drivers/serial/amba-pl011.c
@@ -153,8 +153,9 @@ static void pl011_rx_chars(struct uart_amba_port *uap)
        ignore_char:
                status = readw(uap->port.membase + UART01x_FR);
        }
+       spin_unlock(&uap->port.lock);
        tty_flip_buffer_push(tty);
-       return;
+       spin_lock(&uap->port.lock);
 }
 
 static void pl011_tx_chars(struct uart_amba_port *uap)
@@ -661,6 +662,8 @@ static int __init pl011_console_setup(struct console *co, char *options)
        if (co->index >= UART_NR)
                co->index = 0;
        uap = amba_ports[co->index];
+       if (!uap)
+               return -ENODEV;
 
        uap->port.uartclk = clk_get_rate(uap->clk);
 
@@ -713,7 +716,7 @@ static int pl011_probe(struct amba_device *dev, void *id)
                goto out;
        }
 
-       uap = kmalloc(sizeof(struct uart_amba_port), GFP_KERNEL);
+       uap = kzalloc(sizeof(struct uart_amba_port), GFP_KERNEL);
        if (uap == NULL) {
                ret = -ENOMEM;
                goto out;
@@ -725,7 +728,6 @@ static int pl011_probe(struct amba_device *dev, void *id)
                goto free;
        }
 
-       memset(uap, 0, sizeof(struct uart_amba_port));
        uap->clk = clk_get(&dev->dev, "UARTCLK");
        if (IS_ERR(uap->clk)) {
                ret = PTR_ERR(uap->clk);