[PATCH 23/29] 8250: Don't clobber spinlocks.

David Daney
2008-11-06T20:57:24Z

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>
---
drivers/serial/8250.c | 15 +++++++++++++--
1 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index 303272a..8e28750 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;
}

--
1.5.6.5