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authorThomas Renninger <trenn@suse.de>2008-07-30 09:32:58 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2008-07-30 20:41:43 +0400
commita1531acd43310a7e4571d52e8846640667f4c74b (patch)
treeccb0a733180644ec8856219711e6119fd05d4737 /arch
parent1a4e564b7db999fbe5d88318c96ac8747699d417 (diff)
downloadlinux-a1531acd43310a7e4571d52e8846640667f4c74b.tar.xz
cpufreq acpi: only call _PPC after cpufreq ACPI init funcs got called already
Ingo Molnar provided a fix to not call _PPC at processor driver initialization time in "[PATCH] ACPI: fix cpufreq regression" (git commit e4233dec749a3519069d9390561b5636a75c7579) But it can still happen that _PPC is called at processor driver initialization time. This patch should make sure that this is not possible anymore. Signed-off-by: Thomas Renninger <trenn@suse.de> Cc: Andi Kleen <andi@firstfloor.org> Cc: Len Brown <lenb@kernel.org> Cc: Dave Jones <davej@codemonkey.org.uk> Cc: Ingo Molnar <mingo@elte.hu> Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/powerpc/platforms/cell/cbe_cpufreq_pmi.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/cell/cbe_cpufreq_pmi.c b/arch/powerpc/platforms/cell/cbe_cpufreq_pmi.c
index 69288f653144..3233fe84d158 100644
--- a/arch/powerpc/platforms/cell/cbe_cpufreq_pmi.c
+++ b/arch/powerpc/platforms/cell/cbe_cpufreq_pmi.c
@@ -96,6 +96,12 @@ static int pmi_notifier(struct notifier_block *nb,
struct cpufreq_frequency_table *cbe_freqs;
u8 node;
+ /* Should this really be called for CPUFREQ_ADJUST, CPUFREQ_INCOMPATIBLE
+ * and CPUFREQ_NOTIFY policy events?)
+ */
+ if (event == CPUFREQ_START)
+ return 0;
+
cbe_freqs = cpufreq_frequency_get_table(policy->cpu);
node = cbe_cpu_to_node(policy->cpu);