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

[linux-2.6-omap-h63xx.git] / Documentation / ia64 / serial.txt

diff --git a/Documentation/ia64/serial.txt b/Documentation/ia64/serial.txt
index f51eb4bc2ff1e1635c0ca1b14c9db9e90de2fb56..040b9773209fe173e61f4c79d23db74ecf6c0118 100644 (file)
--- a/Documentation/ia64/serial.txt
+++ b/Documentation/ia64/serial.txt
@@ -124,6 +124,13 @@ TROUBLESHOOTING SERIAL CONSOLE PROBLEMS
 
        - 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