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authorDavid Daney <ddaney@caviumnetworks.com>2009-01-02 13:49:41 +0000
committerLinus Torvalds <torvalds@linux-foundation.org>2009-01-02 10:19:42 -0800
commitb430428a188e8a434325e251d0704af4b88b4711 (patch)
treeb00c4a1872c2a1db32002933f5b061d245787b1b /drivers
parentbc3256288b8ff9787623805e53cf7c6d5a2b4591 (diff)
downloadlinux-b430428a188e8a434325e251d0704af4b88b4711.tar.bz2
8250: Don't clobber spinlocks.
In serial8250_isa_init_ports(), the port's lock is initialized. We should not overwrite it. In early_serial_setup(), only copy in the fields we need. Since the early console code only uses a subset of the fields, these are sufficient. Signed-off-by: David Daney <ddaney@caviumnetworks.com> Signed-off-by: Tomaso Paoletti <tpaoletti@caviumnetworks.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/serial/8250.c15
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index 303272af386e..8e28750a4058 100644
--- a/drivers/serial/8250.c
+++ b/drivers/serial/8250.c
@@ -2752,12 +2752,23 @@ static struct uart_driver serial8250_reg = {
*/
int __init early_serial_setup(struct uart_port *port)
{
+ struct uart_port *p;
+
if (port->line >= ARRAY_SIZE(serial8250_ports))
return -ENODEV;
serial8250_isa_init_ports();
- serial8250_ports[port->line].port = *port;
- serial8250_ports[port->line].port.ops = &serial8250_pops;
+ p = &serial8250_ports[port->line].port;
+ p->iobase = port->iobase;
+ p->membase = port->membase;
+ p->irq = port->irq;
+ p->uartclk = port->uartclk;
+ p->fifosize = port->fifosize;
+ p->regshift = port->regshift;
+ p->iotype = port->iotype;
+ p->flags = port->flags;
+ p->mapbase = port->mapbase;
+ p->private_data = port->private_data;
return 0;
}