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| author | Andi Kleen <ak@linux.intel.com> | 2011-10-12 17:46:35 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2011-10-14 13:16:42 +0200 |
| commit | ca8bc8dc044793ee4d59ff7fe40138eee27d0325 (patch) | |
| tree | 01355030982b5923551e1cedc48326b728ae5487 /drivers/hwmon/coretemp.c | |
| parent | 30963c0ac721f70aea0352ed1cd0fc3cfbaef730 (diff) | |
| download | linux-ca8bc8dc044793ee4d59ff7fe40138eee27d0325.tar.gz linux-ca8bc8dc044793ee4d59ff7fe40138eee27d0325.tar.bz2 linux-ca8bc8dc044793ee4d59ff7fe40138eee27d0325.zip | |
coretemp: Get microcode revision from cpu_data
Now that the ucode revision is available in cpu_data remove
the existing code in coretemp.c to query it manually. Read the
ucode revision from cpu_data instead
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Cc: jbeulich@novell.com
Cc: fenghua.yu@intel.com
Cc: khali@linux-fr.org
Link: http://lkml.kernel.org/r/1318466795-7393-3-git-send-email-andi@firstfloor.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'drivers/hwmon/coretemp.c')
| -rw-r--r-- | drivers/hwmon/coretemp.c | 28 |
1 files changed, 4 insertions, 24 deletions
diff --git a/drivers/hwmon/coretemp.c b/drivers/hwmon/coretemp.c index 932383786642..ce18c046f728 100644 --- a/drivers/hwmon/coretemp.c +++ b/drivers/hwmon/coretemp.c @@ -325,15 +325,6 @@ static int get_tjmax(struct cpuinfo_x86 *c, u32 id, struct device *dev) return adjust_tjmax(c, id, dev); } -static void __devinit get_ucode_rev_on_cpu(void *edx) -{ - u32 eax; - - wrmsr(MSR_IA32_UCODE_REV, 0, 0); - sync_core(); - rdmsr(MSR_IA32_UCODE_REV, eax, *(u32 *)edx); -} - static int create_name_attr(struct platform_data *pdata, struct device *dev) { sysfs_attr_init(&pdata->name_attr.attr); @@ -380,27 +371,16 @@ exit_free: static int __cpuinit chk_ucode_version(unsigned int cpu) { struct cpuinfo_x86 *c = &cpu_data(cpu); - int err; - u32 edx; /* * Check if we have problem with errata AE18 of Core processors: * Readings might stop update when processor visited too deep sleep, * fixed for stepping D0 (6EC). */ - if (c->x86_model == 0xe && c->x86_mask < 0xc) { - /* check for microcode update */ - err = smp_call_function_single(cpu, get_ucode_rev_on_cpu, - &edx, 1); - if (err) { - pr_err("Cannot determine microcode revision of " - "CPU#%u (%d)!\n", cpu, err); - return -ENODEV; - } else if (edx < 0x39) { - pr_err("Errata AE18 not fixed, update BIOS or " - "microcode of the CPU!\n"); - return -ENODEV; - } + if (c->x86_model == 0xe && c->x86_mask < 0xc && c->microcode < 0x39) { + pr_err("Errata AE18 not fixed, update BIOS or " + "microcode of the CPU!\n"); + return -ENODEV; } return 0; } |