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| author | Anton Blanchard <anton@samba.org> | 2012-06-27 17:13:52 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-07-16 20:03:21 +0400 |
| commit | ee1602ff18545ddf7f19638fb350e4eec2030c0d (patch) | |
| tree | 5fb6a4f86e7ef199685a19a996178b5c9d8e7252 /arch/arm/plat-samsung | |
| parent | 8057f6c444173496806618f2fe173c2f02fb3995 (diff) | |
| download | linux-ee1602ff18545ddf7f19638fb350e4eec2030c0d.tar.xz | |
powerpc: check_and_cede_processor() never cedes
commit 0b17ba7258db83cd02da560884e053b85de371f2 upstream.
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>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/arm/plat-samsung')
0 files changed, 0 insertions, 0 deletions