提交 1ab54a93 编写于 作者: B Bjorn Helgaas 提交者: Linus Torvalds

[PATCH] ia64: note requirement for 8250_pnp, now that 8250_acpi is gone

We removed 8250_acpi in 2.6.17.  If we don't have PNPACPI turned on, we
won't find any ACPI serial devices, so mention this requirement in the
troubleshooting part of the documentation.

CONFIG_PNPACPI is already turned on in all the relevant defconfigs.
Signed-off-by: NBjorn Helgaas <bjorn.helgaas@hp.com>
Acked-by: N"Luck, Tony" <tony.luck@intel.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
上级 a51f4a81
...@@ -124,6 +124,13 @@ TROUBLESHOOTING SERIAL CONSOLE PROBLEMS ...@@ -124,6 +124,13 @@ TROUBLESHOOTING SERIAL CONSOLE PROBLEMS
- Add entry to /etc/securetty for console tty. - Add entry to /etc/securetty for console tty.
No ACPI serial devices found in 2.6.17 or later:
- Turn on CONFIG_PNP and CONFIG_PNPACPI. Prior to 2.6.17, ACPI
serial devices were discovered by 8250_acpi. In 2.6.17,
8250_acpi was replaced by the combination of 8250_pnp and
CONFIG_PNPACPI.
[1] http://www.dig64.org/specifications/DIG64_PCDPv20.pdf [1] http://www.dig64.org/specifications/DIG64_PCDPv20.pdf
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