This is a note to let you know that I've just added the patch titled
Revert "tty/8250_pnp: serial port detection regression since v3.7"
to the 3.8-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
revert-tty-8250_pnp-serial-port-detection-regression-since-v3.7.patch
and it can be found in the queue-3.8 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From c12f9ea28e9fbe7b1f4cefc953bee33298370683 Mon Sep 17 00:00:00 2001
From: Sean Young <sean@xxxxxxxx>
Date: Sun, 7 Apr 2013 20:47:18 +0100
Subject: Revert "tty/8250_pnp: serial port detection regression since v3.7"
From: Sean Young <sean@xxxxxxxx>
commit c12f9ea28e9fbe7b1f4cefc953bee33298370683 upstream.
This reverts commit 77e372a3d82e5e4878ce1962207edd766773cc76.
Checking for disabled resources board breaks detection pnp on another
board "AMI UEFI implementation (Version: 0406 Release Date: 06/06/2012)".
I'm working with the reporter of the original bug to write and test
a better fix.
https://bugzilla.redhat.com/show_bug.cgi?id=928246
Signed-off-by: Sean Young <sean@xxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/tty/serial/8250/8250_pnp.c | 12 +++++-------
1 file changed, 5 insertions(+), 7 deletions(-)
--- a/drivers/tty/serial/8250/8250_pnp.c
+++ b/drivers/tty/serial/8250/8250_pnp.c
@@ -429,7 +429,6 @@ serial_pnp_probe(struct pnp_dev *dev, co
{
struct uart_8250_port uart;
int ret, line, flags = dev_id->driver_data;
- struct resource *res = NULL;
if (flags & UNKNOWN_DEV) {
ret = serial_pnp_guess_board(dev);
@@ -440,12 +439,11 @@ serial_pnp_probe(struct pnp_dev *dev, co
memset(&uart, 0, sizeof(uart));
if (pnp_irq_valid(dev, 0))
uart.port.irq = pnp_irq(dev, 0);
- if ((flags & CIR_PORT) && pnp_port_valid(dev, 2))
- res = pnp_get_resource(dev, IORESOURCE_IO, 2);
- else if (pnp_port_valid(dev, 0))
- res = pnp_get_resource(dev, IORESOURCE_IO, 0);
- if (pnp_resource_enabled(res)) {
- uart.port.iobase = res->start;
+ if ((flags & CIR_PORT) && pnp_port_valid(dev, 2)) {
+ uart.port.iobase = pnp_port_start(dev, 2);
+ uart.port.iotype = UPIO_PORT;
+ } else if (pnp_port_valid(dev, 0)) {
+ uart.port.iobase = pnp_port_start(dev, 0);
uart.port.iotype = UPIO_PORT;
} else if (pnp_mem_valid(dev, 0)) {
uart.port.mapbase = pnp_mem_start(dev, 0);
Patches currently in stable-queue which might be from sean@xxxxxxxx are
queue-3.8/revert-tty-8250_pnp-serial-port-detection-regression-since-v3.7.patch
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