From 182fdd225de8fc3b1b721ae944fc41146a0bd812 Mon Sep 17 00:00:00 2001 From: Alex Williamson Date: Mon, 13 Aug 2007 15:49:46 -0600 Subject: [PATCH] [IA64] Fix processor_get_freq The core cpufreq code doesn't appear to understand returning -EAGAIN for the get() function of the cpufreq_driver. If PAL_GET_PSTATE returns -1, such as when running on Xen, scaling_cur_freq is happy to return 4294967285 kHz (ie. (unsigned)-11). The other drivers appear to return 0 for a failure, and doing so gives me the max frequency from scaling_cur_frequency and "" from cpuinfo_cur_frequency. I believe that's the desired behavior. Signed-off-by: Alex Williamson Acked-by: Venkatesh Pallipadi Signed-off-by: Tony Luck --- arch/ia64/kernel/cpufreq/acpi-cpufreq.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/arch/ia64/kernel/cpufreq/acpi-cpufreq.c b/arch/ia64/kernel/cpufreq/acpi-cpufreq.c index 15c08d52f09f..8c6ec7070844 100644 --- a/arch/ia64/kernel/cpufreq/acpi-cpufreq.c +++ b/arch/ia64/kernel/cpufreq/acpi-cpufreq.c @@ -113,10 +113,8 @@ processor_get_freq ( saved_mask = current->cpus_allowed; set_cpus_allowed(current, cpumask_of_cpu(cpu)); - if (smp_processor_id() != cpu) { - ret = -EAGAIN; + if (smp_processor_id() != cpu) goto migrate_end; - } /* processor_get_pstate gets the instantaneous frequency */ ret = processor_get_pstate(&value); @@ -125,7 +123,7 @@ processor_get_freq ( set_cpus_allowed(current, saved_mask); printk(KERN_WARNING "get performance failed with error %d\n", ret); - ret = -EAGAIN; + ret = 0; goto migrate_end; } clock_freq = extract_clock(data, value, cpu); -- 2.30.2