x86, serial: convert legacy COM ports to platform devices

[powerpc.git] / Documentation / kernel-parameters.txt

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index fa88517..bebebe4 100644 (file)
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -816,6 +816,11 @@ and is between 256 and 4096 characters. It is defined in the file
        lasi=           [HW,SCSI] PARISC LASI driver for the 53c700 chip
                        Format: addr:<io>,irq:<irq>
 
+       legacy_serial.force [HW,IA-32,X86-64]
+                       Probe for COM ports at legacy addresses even
+                       if PNPBIOS or ACPI should describe them.  This
+                       is for working around firmware defects.
+
        llsc*=          [IA64] See function print_params() in
                        arch/ia64/sn/kernel/llsc4.c.