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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2011-12-09 15:06:18 +1100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-03-23 11:21:23 -0700 |
| commit | 8d7548704a1a6b6dacd6b458897007de80a820b3 (patch) | |
| tree | 718c661f8bc9d7927db16ec6c55fedb61c20f163 /arch/powerpc | |
| parent | a4599a9b8c0189e7db0ca426f107e2c0d1f472bd (diff) | |
| download | lwn-8d7548704a1a6b6dacd6b458897007de80a820b3.tar.gz lwn-8d7548704a1a6b6dacd6b458897007de80a820b3.zip | |
powerpc/pmac: Fix SMP kernels on pre-core99 UP machines
commit 78c5c68a4cf4329d17abfa469345ddf323d4fd62 upstream.
The code for "powersurge" SMP would kick in and cause a crash
at boot due to the lack of a NULL test.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Jeremy Kerr <jeremy.kerr@canonical.com>
Reported-by: Adam Conrad <adconrad@ubuntu.com>
Tested-by: Adam Conrad <adconrad@ubuntu.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/platforms/powermac/smp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/powermac/smp.c b/arch/powerpc/platforms/powermac/smp.c index 9b6a820bdd7d..3394254f305f 100644 --- a/arch/powerpc/platforms/powermac/smp.c +++ b/arch/powerpc/platforms/powermac/smp.c @@ -414,7 +414,7 @@ static struct irqaction psurge_irqaction = { static void __init smp_psurge_setup_cpu(int cpu_nr) { - if (cpu_nr != 0) + if (cpu_nr != 0 || !psurge_start) return; /* reset the entry point so if we get another intr we won't |