[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>
diff --git a/arch/powerpc/platforms/ps3/mm.c b/arch/powerpc/platforms/ps3/mm.c
index 42354de..2014d2b 100644
--- a/arch/powerpc/platforms/ps3/mm.c
+++ b/arch/powerpc/platforms/ps3/mm.c
@@ -294,7 +294,7 @@
unsigned long nr_pages;
if (!firmware_has_feature(FW_FEATURE_PS3_LV1))
- return 0;
+ return -ENODEV;
BUG_ON(!mem_init_done);
diff --git a/arch/powerpc/platforms/ps3/system-bus.c b/arch/powerpc/platforms/ps3/system-bus.c
index a9f7e4a..3c48cce 100644
--- a/arch/powerpc/platforms/ps3/system-bus.c
+++ b/arch/powerpc/platforms/ps3/system-bus.c
@@ -172,7 +172,7 @@
int result;
if (!firmware_has_feature(FW_FEATURE_PS3_LV1))
- return 0;
+ return -ENODEV;
result = bus_register(&ps3_system_bus_type);
BUG_ON(result);
diff --git a/drivers/ps3/ps3av.c b/drivers/ps3/ps3av.c
index 1926b4d..d21e04c 100644
--- a/drivers/ps3/ps3av.c
+++ b/drivers/ps3/ps3av.c
@@ -24,6 +24,8 @@
#include <linux/reboot.h>
#include <linux/kernel.h>
#include <linux/ioctl.h>
+
+#include <asm/firmware.h>
#include <asm/lv1call.h>
#include <asm/ps3av.h>
#include <asm/ps3.h>
@@ -947,7 +949,12 @@
static int ps3av_module_init(void)
{
- int error = ps3_vuart_port_driver_register(&ps3av_driver);
+ int error;
+
+ if (!firmware_has_feature(FW_FEATURE_PS3_LV1))
+ return -ENODEV;
+
+ error = ps3_vuart_port_driver_register(&ps3av_driver);
if (error) {
printk(KERN_ERR
"%s: ps3_vuart_port_driver_register failed %d\n",
diff --git a/drivers/ps3/sys-manager.c b/drivers/ps3/sys-manager.c
index 0fc30be..3aa2b0d 100644
--- a/drivers/ps3/sys-manager.c
+++ b/drivers/ps3/sys-manager.c
@@ -22,7 +22,10 @@
#include <linux/module.h>
#include <linux/workqueue.h>
#include <linux/reboot.h>
+
+#include <asm/firmware.h>
#include <asm/ps3.h>
+
#include "vuart.h"
MODULE_AUTHOR("Sony Corporation");
@@ -598,6 +601,9 @@
static int __init ps3_sys_manager_init(void)
{
+ if (!firmware_has_feature(FW_FEATURE_PS3_LV1))
+ return -ENODEV;
+
return ps3_vuart_port_driver_register(&ps3_sys_manager);
}
diff --git a/drivers/ps3/vuart.c b/drivers/ps3/vuart.c
index 7462981..1adf186 100644
--- a/drivers/ps3/vuart.c
+++ b/drivers/ps3/vuart.c
@@ -1031,7 +1031,7 @@
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);