powerpc/ps3: Add missing check for PS3 to rtc-ps3 platform deviceregistration (fwd)

[Geert Uytterhoeven]

For stable/linux-2.6.30.y

---------- Forwarded message ----------
Date: Thu, 27 Aug 2009 03:59:28 GMT
From: Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>
To: git-commits-head@xxxxxxxxxxxxxxx
Subject: powerpc/ps3: Add missing check for PS3 to rtc-ps3 platform device
    registration

Gitweb:     http://git.kernel.org/linus/7b6a09f3d6aedeaac923824af2a5df30300b56e9
Commit:     7b6a09f3d6aedeaac923824af2a5df30300b56e9
Parent:     f415c413f458837bd0c27086b79aca889f9435e4
Author:     Geert Uytterhoeven <Geert.Uytterhoeven@xxxxxxxxxxx>
AuthorDate: Sun Aug 23 22:54:32 2009 +0000
Committer:  Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
CommitDate: Thu Aug 27 13:25:46 2009 +1000

    powerpc/ps3: Add missing check for PS3 to rtc-ps3 platform device registration
    
    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@xxxxxxxxxx>
    Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@xxxxxxxxxxx>
    Acked-by: Geoff Levand <geoffrey.levand@xxxxxxxxxxx>
    Signed-off-by: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
---
 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);
--
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