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authorRusty Russell <rusty@rustcorp.com.au>2009-11-03 02:35:30 -0500
committerDave Jones <davej@redhat.com>2009-11-17 23:15:04 -0500
commit8dca15e40889e5d5e9655b03ba79c26200f760ce (patch)
tree8caf8a37a4eba4e3a07f835f52bfaa9707fc8d72 /arch/x86/kernel
parente77b89f13a0d48aea70b69976e854f2a2444a519 (diff)
[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>
Diffstat (limited to 'arch/x86/kernel')
-rw-r--r--arch/x86/kernel/cpu/cpufreq/speedstep-ich.c19
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)
232 return 0; 232 return 0;
233} 233}
234 234
235struct get_freq_data { 235static void get_freq_data(void *_speed)
236 unsigned int speed;
237 unsigned int processor;
238};
239
240static void get_freq_data(void *_data)
241{ 236{
242 struct get_freq_data *data = _data; 237 unsigned int *speed = _speed;
243 238
244 data->speed = speedstep_get_frequency(data->processor); 239 *speed = speedstep_get_frequency(speedstep_processor);
245} 240}
246 241
247static unsigned int speedstep_get(unsigned int cpu) 242static unsigned int speedstep_get(unsigned int cpu)
248{ 243{
249 struct get_freq_data data = { .processor = cpu }; 244 unsigned int speed;
250 245
251 /* You're supposed to ensure CPU is online. */ 246 /* You're supposed to ensure CPU is online. */
252 if (smp_call_function_single(cpu, get_freq_data, &data, 1) != 0) 247 if (smp_call_function_single(cpu, get_freq_data, &speed, 1) != 0)
253 BUG(); 248 BUG();
254 249
255 dprintk("detected %u kHz as current frequency\n", data.speed); 250 dprintk("detected %u kHz as current frequency\n", speed);
256 return data.speed; 251 return speed;
257} 252}
258 253
259/** 254/**