earlycon initializes struct uart_port::regshift to the correct
value for UPIO_MEM32 already. Use the port field rather than
hard-coded value.
This enables broader support for various i/o access methods in
8250 earlycon (eg., omap8250 earlycon).
Signed-off-by: Peter Hurley <pe...@hurleysoftware.com>
---
drivers/tty/serial/8250/8250_early.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/tty/serial/8250/8250_early.c
b/drivers/tty/serial/8250/8250_early.c
index 8e11968..1b5aca3 100644
--- a/drivers/tty/serial/8250/8250_early.c
+++ b/drivers/tty/serial/8250/8250_early.c
@@ -37,11 +37,13 @@
unsigned int __weak __init serial8250_early_in(struct uart_port *port, int
offset)
{
+ offset <<= port->regshift;
+
switch (port->iotype) {
case UPIO_MEM:
return readb(port->membase + offset);
case UPIO_MEM32:
- return readl(port->membase + (offset << 2));
+ return readl(port->membase + offset);
case UPIO_PORT:
return inb(port->iobase + offset);
default:
@@ -51,12 +53,14 @@ unsigned int __weak __init serial8250_early_in(struct
uart_port *port, int offse
void __weak __init serial8250_early_out(struct uart_port *port, int offset,
int value)
{
+ offset <<= port->regshift;
+
switch (port->iotype) {
case UPIO_MEM:
writeb(value, port->membase + offset);
break;
case UPIO_MEM32:
- writel(value, port->membase + (offset << 2));
+ writel(value, port->membase + offset);
break;
case UPIO_PORT:
outb(value, port->iobase + offset);
--
2.3.5
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
