serial, 8250: calculate irqflags bitmask before loop

Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index 737b4c9..b75e63e 100644 (file)
--- a/drivers/serial/8250.c
+++ b/drivers/serial/8250.c
@@ -2646,7 +2646,7 @@ static void __init serial8250_isa_init_ports(void)
 {
        struct uart_8250_port *up;
        static int first = 1;
-       int i;
+       int i, irqflag = 0;
 
        if (!first)
                return;
@@ -2670,6 +2670,9 @@ static void __init serial8250_isa_init_ports(void)
                up->port.ops = &serial8250_pops;
        }
 
+       if (share_irqs)
+               irqflag = IRQF_SHARED;
+
        for (i = 0, up = serial8250_ports;
             i < ARRAY_SIZE(old_serial_port) && i < nr_uarts;
             i++, up++) {
@@ -2683,8 +2686,7 @@ static void __init serial8250_isa_init_ports(void)
                up->port.iotype   = old_serial_port[i].io_type;
                up->port.regshift = old_serial_port[i].iomem_reg_shift;
                set_io_from_upio(&up->port);
-               if (share_irqs)
-                       up->port.irqflags |= IRQF_SHARED;
+               up->port.irqflags |= irqflag;
        }
 }
 
@@ -2940,10 +2942,13 @@ static int __devinit serial8250_probe(struct platform_device *dev)
 {
        struct plat_serial8250_port *p = dev->dev.platform_data;
        struct uart_port port;
-       int ret, i;
+       int ret, i, irqflag = 0;
 
        memset(&port, 0, sizeof(struct uart_port));
 
+       if (share_irqs)
+               irqflag = IRQF_SHARED;
+
        for (i = 0; p && p->flags != 0; p++, i++) {
                port.iobase             = p->iobase;
                port.membase            = p->membase;
@@ -2960,8 +2965,7 @@ static int __devinit serial8250_probe(struct platform_device *dev)
                port.serial_in          = p->serial_in;
                port.serial_out         = p->serial_out;
                port.dev                = &dev->dev;
-               if (share_irqs)
-                       port.irqflags |= IRQF_SHARED;
+               port.irqflags           |= irqflag;
                ret = serial8250_register_port(&port);
                if (ret < 0) {
                        dev_err(&dev->dev, "unable to register port at index %d "