提交 ca8bc8dc 编写于 作者: A Andi Kleen 提交者: Ingo Molnar

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: NAndi Kleen <ak@linux.intel.com>
Acked-by: NH. 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.orgSigned-off-by: NIngo Molnar <mingo@elte.hu>
上级 30963c0a
......@@ -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 @@ static int create_core_attrs(struct temp_data *tdata, struct device *dev,
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;
}
......
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