Anton Blanchard 0b17ba7258 powerpc: check_and_cede_processor() never cedes
Commit f948501b36c6 ("Make hard_irq_disable() actually hard-disable
interrupts") caused check_and_cede_processor to stop working.
->irq_happened will never be zero right after a hard_irq_disable
so the compiler removes the call to cede_processor completely.

The bug was introduced back in the lazy interrupt handling rework
of 3.4 but was hidden until recently because hard_irq_disable did
nothing.

This issue will eventually appear in 3.4 stable since the
hard_irq_disable fix is marked stable, so mark this one for stable
too.

Signed-off-by: Anton Blanchard <anton@samba.org>
Cc: stable@vger.kernel.org
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-06-29 14:35:37 +10:00
..
2012-03-28 18:30:02 +01:00
2012-03-28 18:30:02 +01:00
2012-03-28 18:30:02 +01:00
2012-03-28 18:30:02 +01:00
2011-03-31 11:26:23 -03:00
2011-03-31 11:26:23 -03:00
2012-03-28 18:30:02 +01:00
2012-03-09 11:39:29 +11:00
2012-03-28 18:30:02 +01:00
2011-07-26 16:49:47 -07:00
2012-03-28 18:30:02 +01:00
2011-11-08 14:51:46 +11:00
2012-03-20 21:48:30 +08:00
2008-08-18 21:40:03 +02:00
2008-08-04 13:18:17 +10:00
2011-12-08 14:02:23 +11:00
2011-03-31 11:26:23 -03:00
2011-05-22 08:47:53 -04:00
2012-04-08 12:54:33 +03:00
2010-06-09 11:12:36 +02:00
2011-07-26 16:49:47 -07:00
2012-04-30 15:37:16 +10:00
2012-03-28 11:32:01 +11:00
2010-05-05 09:11:10 -04:00
2011-09-20 09:19:40 +10:00
2011-12-07 18:02:02 +11:00
2012-03-09 13:25:06 +11:00
2011-03-31 11:26:23 -03:00
2010-10-26 16:52:08 -07:00
2011-03-31 11:26:23 -03:00
2012-04-30 15:37:26 +10:00
2011-07-26 16:49:47 -07:00
2009-04-07 15:18:58 +10:00
2009-12-09 17:10:37 +11:00
2011-09-20 09:19:40 +10:00
2011-09-27 18:08:04 +02:00
2010-03-05 03:04:08 -06:00
2012-03-28 15:58:21 -07:00
2011-04-20 17:01:19 +10:00
2012-03-28 18:30:02 +01:00
2011-03-31 11:26:23 -03:00
2012-06-02 10:44:11 -04:00
2008-09-06 19:30:15 +01:00
2009-08-28 14:24:10 +10:00
2011-10-31 17:30:44 -07:00
2011-10-31 17:30:44 -07:00
2011-03-31 11:26:23 -03:00
2011-05-06 13:32:35 +10:00