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| author | Rusty Russell <rusty@rustcorp.com.au> | 2009-11-03 08:35:30 +0100 |
|---|---|---|
| committer | Dave Jones <davej@redhat.com> | 2009-11-18 05:15:04 +0100 |
| commit | 8dca15e40889e5d5e9655b03ba79c26200f760ce (patch) | |
| tree | 8caf8a37a4eba4e3a07f835f52bfaa9707fc8d72 | |
| parent | [CPUFREQ] Fix use after free on governor restore (diff) | |
| download | linux-8dca15e40889e5d5e9655b03ba79c26200f760ce.tar.xz linux-8dca15e40889e5d5e9655b03ba79c26200f760ce.zip | |
[CPUFREQ] speedstep-ich: fix error caused by 394122ab144dae4b276d74644a2f11c44a60ac5c
"[CPUFREQ] cpumask: avoid playing with cpus_allowed in speedstep-ich.c"
changed the code to mistakenly pass the current cpu as the "processor"
argument of speedstep_get_frequency(), whereas it should be the type of
the processor.
Addresses http://bugzilla.kernel.org/show_bug.cgi?id=14340
Based on a patch by Dave Mueller.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Dominik Brodowski <linux@brodo.de>
Reported-by: Dave Mueller <dave.mueller@gmx.ch>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dave Jones <davej@redhat.com>
| -rw-r--r-- | arch/x86/kernel/cpu/cpufreq/speedstep-ich.c | 19 |
1 files changed, 7 insertions, 12 deletions
diff --git a/arch/x86/kernel/cpu/cpufreq/speedstep-ich.c b/arch/x86/kernel/cpu/cpufreq/speedstep-ich.c index 6911e91fb4f6..3ae5a7a3a500 100644 --- a/arch/x86/kernel/cpu/cpufreq/speedstep-ich.c +++ b/arch/x86/kernel/cpu/cpufreq/speedstep-ich.c @@ -232,28 +232,23 @@ static unsigned int speedstep_detect_chipset(void) return 0; } -struct get_freq_data { - unsigned int speed; - unsigned int processor; -}; - -static void get_freq_data(void *_data) +static void get_freq_data(void *_speed) { - struct get_freq_data *data = _data; + unsigned int *speed = _speed; - data->speed = speedstep_get_frequency(data->processor); + *speed = speedstep_get_frequency(speedstep_processor); } static unsigned int speedstep_get(unsigned int cpu) { - struct get_freq_data data = { .processor = cpu }; + unsigned int speed; /* You're supposed to ensure CPU is online. */ - if (smp_call_function_single(cpu, get_freq_data, &data, 1) != 0) + if (smp_call_function_single(cpu, get_freq_data, &speed, 1) != 0) BUG(); - dprintk("detected %u kHz as current frequency\n", data.speed); - return data.speed; + dprintk("detected %u kHz as current frequency\n", speed); + return speed; } /** |