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, 0 deletions

diff --git a/drivers/ide/legacy/ali14xx.c b/drivers/ide/legacy/ali14xx.c
index f9f5b8d54d6d..91961aa03047 100644
--- a/drivers/ide/legacy/ali14xx.c
+++ b/drivers/ide/legacy/ali14xx.c
@@ -228,9 +228,17 @@ static int __init ali14xx_probe(void)
         return 0;
 }
 
+int probe_ali14xx = 0;
+
+module_param_named(probe, probe_ali14xx, bool, 0);
+MODULE_PARM_DESC(probe, "probe for ALI M14xx chipsets");
+
 /* Can be called directly from ide.c. */
 int __init ali14xx_init(void)
 {
+        if (probe_ali14xx == 0)
+                goto out;
+
         /* auto-detect IDE controller port */
         if (findPort()) {
                 if (ali14xx_probe())
@@ -238,6 +246,7 @@ int __init ali14xx_init(void)
                 return 0;
         }
         printk(KERN_ERR "ali14xx: not found.\n");
+out:
         return -ENODEV;
 }