Thread (10 messages) flat view 10 messages, 5 authors, 2007-10-08

Re: 2.6.23-rc7-mm1 -- powerpc rtas panic

From: Michael Ellerman <hidden>
Date: 2007-10-03 00:30:31
Also in: lkml

On Wed, 2007-10-03 at 10:26 +1000, Tony Breeds wrote:
quoted hunk ↗ jump to hunk
On Tue, Oct 02, 2007 at 06:28:19PM -0500, Linas Vepstas wrote:
quoted
On Mon, Sep 24, 2007 at 01:35:31PM +0100, Andy Whitcroft wrote:
quoted
Seeing the following from an older power LPAR, pretty sure we had
this in the previous -mm also:
I haven't forgetten about this ... and am looking at it now.
Seems that whenever I go to reserve the machine pSeries-102,
someone else is using it :-)
This panic is caused by "[POWERPC] pseries: Fix jumbled no_logging flag."
(79c0108d1b9db4864ab77b2a95dfa04f2dcf264c), in the powerpc/for-2.6.24
branch.  It looks to me that we have logging enabled too early now.

I think the following is a reasonable fix?

---
Explicitly enable RTAS error logging, when it should be ready.


Signed-off-by: Tony Breeds <redacted>

---

 arch/powerpc/platforms/pseries/rtasd.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)
diff --git a/arch/powerpc/platforms/pseries/rtasd.c b/arch/powerpc/platforms/pseries/rtasd.c
index 30925d2..0df5d0d 100644
--- a/arch/powerpc/platforms/pseries/rtasd.c
+++ b/arch/powerpc/platforms/pseries/rtasd.c
@@ -54,7 +54,10 @@ static unsigned int rtas_event_scan_rate;
 static int full_rtas_msgs = 0;
 
 /* Stop logging to nvram after first fatal error */
-static int no_more_logging;
+static int no_more_logging = 1; /* Until we initialize everything,
+                                 * make sure we don't try logging
+                                 * anything */
+
I realise it'll make the patch bigger, but this doesn't seem like a
particularly good name for the variable anymore.

cheers

-- 
Michael Ellerman
OzLabs, IBM Australia Development Lab

wwweb: http://michael.ellerman.id.au
phone: +61 2 6212 1183 (tie line 70 21183)

We do not inherit the earth from our ancestors,
we borrow it from our children. - S.M.A.R.T Person

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