linux-kernel - commit 7e92b4fc34 - x86, serial: convert legacy COM ports to platform devices

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Date:	Tue, 24 Jul 2007 16:28:05 +0200
From:	Sébastien Dugué <sebastien.dugue@...l.net>
To:	bjorn.helgaas@...com
Cc:	linux-kernel <linux-kernel@...r.kernel.org>
Subject: commit 7e92b4fc34 - x86, serial: convert legacy COM ports to
 platform devices - broke my serial console

  Hi Bjorn,

 your commit 7e92b4fc345f5b6f57585fbe5ffdb0f24d7c9b26 broke the serial console
on my box. Adding 'legacy_serial.force=1' to my boot param as a workaround
solves the issue, but this may be hiding bugs in Linux PnP support or
in my firmware.

  The box is a dual HT Xeon running a vanilla 2.6.22 x86_64 kernel

  here is my .config:

CONFIG_PNP=y
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_PCI=y
CONFIG_SERIAL_8250_PNP=y
CONFIG_SERIAL_8250_NR_UARTS=4
CONFIG_SERIAL_8250_RUNTIME_UARTS=4
CONFIG_SERIAL_8250_EXTENDED=y
CONFIG_SERIAL_8250_SHARE_IRQ=y
CONFIG_SERIAL_8250_DETECT_IRQ=y

  lspci output attached.

  Any ideas to help me debug this?

  If you need more info (like DSDT dump), just ask.

  Thanks,

  Sébastien.

View attachment "lspci.txt" of type "text/plain" (2177 bytes)