ipmi: add options to disable openfirmware and PCI scanning

Add try...  parameters to disable pci and platform (openfirmware) device
scanning for IPMI.  Also add docs for all the try...  parameters.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 28 insertions, 10 deletions

diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c
index a58beddb4821..0ac9b45a585e 100644
--- a/drivers/char/ipmi/ipmi_si_intf.c
+++ b/drivers/char/ipmi/ipmi_si_intf.c
@@ -1214,6 +1214,10 @@ static bool          si_tryacpi = 1;
 #ifdef CONFIG_DMI
 static bool          si_trydmi = 1;
 #endif
+static bool          si_tryplatform = 1;
+#ifdef CONFIG_PCI
+static bool          si_trypci = 1;
+#endif
 static bool          si_trydefaults = 1;
 static char          *si_type[SI_MAX_PARMS];
 #define MAX_SI_TYPE_STR 30
@@ -1254,6 +1258,15 @@ module_param_named(trydmi, si_trydmi, bool, 0);
 MODULE_PARM_DESC(trydmi, "Setting this to zero will disable the"
                  " default scan of the interfaces identified via DMI");
 #endif
+module_param_named(tryplatform, si_tryplatform, bool, 0);
+MODULE_PARM_DESC(tryacpi, "Setting this to zero will disable the"
+                 " default scan of the interfaces identified via platform"
+                 " interfaces like openfirmware");
+#ifdef CONFIG_PCI
+module_param_named(trypci, si_trypci, bool, 0);
+MODULE_PARM_DESC(tryacpi, "Setting this to zero will disable the"
+                 " default scan of the interfaces identified via pci");
+#endif
 module_param_named(trydefaults, si_trydefaults, bool, 0);
 MODULE_PARM_DESC(trydefaults, "Setting this to 'false' will disable the"
                  " default scan of the KCS and SMIC interface at the standard"
@@ -3387,13 +3400,15 @@ static int init_ipmi_si(void)
                 return 0;
         initialized = 1;
 
-        rv = platform_driver_register(&ipmi_driver);
-        if (rv) {
-                printk(KERN_ERR PFX "Unable to register driver: %d\n", rv);
-                return rv;
+        if (si_tryplatform) {
+                rv = platform_driver_register(&ipmi_driver);
+                if (rv) {
+                        printk(KERN_ERR PFX "Unable to register "
+                               "driver: %d\n", rv);
+                        return rv;
+                }
         }
 
-
         /* Parse out the si_type string into its components. */
         str = si_type_str;
         if (*str != '\0') {
@@ -3416,11 +3431,14 @@ static int init_ipmi_si(void)
                 return 0;
 
 #ifdef CONFIG_PCI
-        rv = pci_register_driver(&ipmi_pci_driver);
-        if (rv)
-                printk(KERN_ERR PFX "Unable to register PCI driver: %d\n", rv);
-        else
-                pci_registered = 1;
+        if (si_trypci) {
+                rv = pci_register_driver(&ipmi_pci_driver);
+                if (rv)
+                        printk(KERN_ERR PFX "Unable to register "
+                               "PCI driver: %d\n", rv);
+                else
+                        pci_registered = 1;
+        }
 #endif
 
 #ifdef CONFIG_ACPI