ide: make legacy IDE VLB modules check for the "probe" kernel params (v2)

Legacy IDE VLB host drivers didn't check for "probe" options when compiled
as modules, which was obviously wrong as we don't want module to poke at
random I/O ports by simply loading it.  Fix it by adding "probe" module param
to legacy IDE VLB host drivers.

v2:
* don't obsolete old "ide0=dtc2278/ht6560b/qd65xx/ali14xx/umc8672"
  IDE driver options yet (per Alan Cox's request) and enhance documentation

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

1 files changed, 9 insertions, 5 deletions

diff --git a/Documentation/ide.txt b/Documentation/ide.txt
index 82349f5cd3d7..3bb9f9c98611 100644
--- a/Documentation/ide.txt
+++ b/Documentation/ide.txt
@@ -294,13 +294,8 @@ The following are valid ONLY on ide0, which usually corresponds
 to the first ATA interface found on the particular host, and the defaults for
 the base,ctl ports must not be altered.
 
- "ide0=dtc2278"         : probe/support DTC2278 interface
- "ide0=ht6560b"         : probe/support HT6560B interface
  "ide0=cmd640_vlb"      : *REQUIRED* for VLB cards with the CMD640 chip
                           (not for PCI -- automatically detected)
- "ide0=qd65xx"          : probe/support qd65xx interface
- "ide0=ali14xx"         : probe/support ali14xx chipsets (ALI M1439/M1443/M1445)
- "ide0=umc8672"         : probe/support umc8672 chipsets
 
  "ide=doubler"          : probe/support IDE doublers on Amiga
 
@@ -308,6 +303,15 @@ There may be more options than shown -- use the source, Luke!
 
 Everything else is rejected with a "BAD OPTION" message.
 
+For legacy IDE VLB host drivers (ali14xx/dtc2278/ht6560b/qd65xx/umc8672)
+you need to explicitly enable probing by using "probe" kernel parameter,
+i.e. to enable probing for ALI M14xx chipsets (ali14xx host driver) use:
+
+* "ali14xx.probe" boot option when ali14xx driver is built-in the kernel
+
+* "probe" module parameter when ali14xx driver is compiled as module
+  ("modprobe ali14xx probe")
+
 ================================================================================
 
 IDE ATAPI streaming tape driver