arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c: avoid cross-CPU interrupts by using smp_c...

[net-next-2.6.git] / arch / x86 / kernel / cpu / cpufreq / acpi-cpufreq.c

diff --git a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
index f28decf8dde3990626f493e5d962bfea9d48e59f..1b1920fa7c8085934cbd846e9329cc538c25be4b 100644 (file)
--- a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
+++ b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
@@ -190,9 +190,11 @@ static void do_drv_write(void *_cmd)
 
 static void drv_read(struct drv_cmd *cmd)
 {
+       int err;
        cmd->val = 0;
 
-       smp_call_function_single(cpumask_any(cmd->mask), do_drv_read, cmd, 1);
+       err = smp_call_function_any(cmd->mask, do_drv_read, cmd, 1);
+       WARN_ON_ONCE(err);      /* smp_call_function_any() was buggy? */
 }
 
 static void drv_write(struct drv_cmd *cmd)