[POWERPC] ps3: always make sure were running on a PS3

Add missing checks to PS3 specific drivers ps3av and sys-manager to verify that
we are actually running on a PS3 (pointed out by Arnd).

Correct existing checks in other subsystems/drivers to return -ENODEV instead
of zero.

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/ps3/vuart.c b/drivers/ps3/vuart.c
index 746298107d6f..1adf186bfaf5 100644
--- a/drivers/ps3/vuart.c
+++ b/drivers/ps3/vuart.c
@@ -1031,7 +1031,7 @@ int __init ps3_vuart_bus_init(void)
         pr_debug("%s:%d:\n", __func__, __LINE__);
 
         if (!firmware_has_feature(FW_FEATURE_PS3_LV1))
-                return 0;
+                return -ENODEV;
 
         init_MUTEX(&vuart_bus_priv.probe_mutex);
         result = bus_register(&ps3_vuart_bus);