commit b430428a188e8a434325e251d0704af4b88b4711, "8250: Don't clobber spinlocks." introduced a regression on the parisc architecture, which broke the handover to the serial port at boottime. early_serial_setup() was changed to only copy a subset of the uart_port fields, and sadly the "type" and "line" fields were forgotten and thus the serial port was not initialized and could not be used for a handover. This patch fixes this by copying the missing fields. As this change to early_serial_setup() doesn't need an initialized spinlock in the uart_port struct any longer, we can drop the spinlock initialization in the superio driver. CC: David Daney <ddaney@xxxxxxxxxxxxxxxxxx> CC: Tomaso Paoletti <tpaoletti@xxxxxxxxxxxxxxxxxx> CC: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> CC: Alan Cox <alan@xxxxxxxxxxxxxxxxxxx> CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> CC: Kyle McMartin <kyle@xxxxxxxxxxx> CC: linux-parisc@xxxxxxxxxxxxxxx Signed-off-by: Helge Deller <deller@xxxxxx> diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c index 1889a63..0d934bf 100644 --- a/drivers/serial/8250.c +++ b/drivers/serial/8250.c @@ -2839,6 +2839,8 @@ int __init early_serial_setup(struct uart_port *port) p->flags = port->flags; p->mapbase = port->mapbase; p->private_data = port->private_data; + p->type = port->type; + p->line = port->line; set_io_from_upio(p); if (port->serial_in) diff --git a/drivers/parisc/superio.c b/drivers/parisc/superio.c index 1e93c83..4fa3bb2 100644 --- a/drivers/parisc/superio.c +++ b/drivers/parisc/superio.c @@ -405,7 +405,6 @@ static void __init superio_serial_init(void) serial_port.type = PORT_16550A; serial_port.uartclk = 115200*16; serial_port.fifosize = 16; - spin_lock_init(&serial_port.lock); /* serial port #1 */ serial_port.iobase = sio_dev.sp1_base; -- To unsubscribe from this list: send the line "unsubscribe linux-parisc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
