USB: ps3: don't call ps3_system_bus_driver_register on other platforms

ps3_system_bus_driver_register is PS3 platform specific function.
On other platforms, it triggers WARN_ON in kref_get.

Signed-off-by: Kou Ishizaki <kou.ishizaki@toshiba.co.jp>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Cc: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 13 insertions, 6 deletions

diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 6bf909e1adf0..a74056488234 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -42,6 +42,9 @@
 #include <asm/irq.h>
 #include <asm/system.h>
 #include <asm/unaligned.h>
+#ifdef CONFIG_PPC_PS3
+#include <asm/firmware.h>
+#endif
 
 
 /*-------------------------------------------------------------------------*/
@@ -968,15 +971,18 @@ static int __init ehci_hcd_init(void)
 #endif
 
 #ifdef PS3_SYSTEM_BUS_DRIVER
-        retval = ps3_system_bus_driver_register(&PS3_SYSTEM_BUS_DRIVER);
-        if (retval < 0) {
+        if (firmware_has_feature(FW_FEATURE_PS3_LV1)) {
+                retval = ps3_system_bus_driver_register(
+                                &PS3_SYSTEM_BUS_DRIVER);
+                if (retval < 0) {
 #ifdef PLATFORM_DRIVER
-                platform_driver_unregister(&PLATFORM_DRIVER);
+                        platform_driver_unregister(&PLATFORM_DRIVER);
 #endif
 #ifdef PCI_DRIVER
-                pci_unregister_driver(&PCI_DRIVER);
+                        pci_unregister_driver(&PCI_DRIVER);
 #endif
-                return retval;
+                        return retval;
+                }
         }
 #endif
 
@@ -993,7 +999,8 @@ static void __exit ehci_hcd_cleanup(void)
         pci_unregister_driver(&PCI_DRIVER);
 #endif
 #ifdef PS3_SYSTEM_BUS_DRIVER
-        ps3_system_bus_driver_unregister(&PS3_SYSTEM_BUS_DRIVER);
+        if (firmware_has_feature(FW_FEATURE_PS3_LV1))
+                ps3_system_bus_driver_unregister(&PS3_SYSTEM_BUS_DRIVER);
 #endif
 }
 module_exit(ehci_hcd_cleanup);