[PATCH for 2.6.31] powerpc/ps3: Add missing check for PS3 to rtc-ps3 platform device registration

[Geert Uytterhoeven]

On non-PS3, we get:

| kernel BUG at drivers/rtc/rtc-ps3.c:36!

because the rtc-ps3 platform device is registered unconditionally in a kernel
with builtin support for PS3.

Reported-by: Sachin Sant <sachinp at in.ibm.com>
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven at sonycom.com>
---
 arch/powerpc/platforms/ps3/time.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/arch/powerpc/platforms/ps3/time.c b/arch/powerpc/platforms/ps3/time.c
index b178a1e..40b5cb4 100644
--- a/arch/powerpc/platforms/ps3/time.c
+++ b/arch/powerpc/platforms/ps3/time.c
@@ -21,6 +21,7 @@
 #include <linux/kernel.h>
 #include <linux/platform_device.h>
 
+#include <asm/firmware.h>
 #include <asm/rtc.h>
 #include <asm/lv1call.h>
 #include <asm/ps3.h>
@@ -84,6 +85,9 @@ static int __init ps3_rtc_init(void)
 {
 	struct platform_device *pdev;
 
+	if (!firmware_has_feature(FW_FEATURE_PS3_LV1))
+		return -ENODEV;
+
 	pdev = platform_device_register_simple("rtc-ps3", -1, NULL, 0);
 	if (IS_ERR(pdev))
 		return PTR_ERR(pdev);
-- 
1.6.2.4

With kind regards,

Geert Uytterhoeven
Software Architect
Techsoft Centre

Technology and Software Centre Europe
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E-mail:   Geert.Uytterhoeven at sonycom.com
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