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x86/hwmon: register alternate sibling upon CPU removal

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Just like pkgtemp registers another core of the same package when one
gets removed, coretemp should register another hyperthread (if
available) in that situation.

As pointed out in the patch fixing the respective code in pkgtemp, the
list protectng mutex must be dropped before calling
coretemp_device_add(), and due to the restructured loop (including an
explicit return) the "safe" variant of the list iterator isn't needed
anymore.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Cc: Rudolf Marek <r.marek@assembler.cz>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
This commit is contained in:
Jan Beulich 2010-09-13 10:23:05 +00:00 committed by Guenter Roeck
parent f6aeccdb96
commit e40cc4bdfd
1 changed files with 15 additions and 7 deletions
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22
drivers/hwmon/coretemp.c
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@ -491,14 +491,22 @@ static int __cpuinit coretemp_device_add(unsigned int cpu)
static void coretemp_device_remove(unsigned int cpu)
{
struct pdev_entry *p, *n;
struct pdev_entry *p;
unsigned int i;
mutex_lock(&pdev_list_mutex);
list_for_each_entry_safe(p, n, &pdev_list, list) {
if (p->cpu == cpu) {
platform_device_unregister(p->pdev);
list_del(&p->list);
kfree(p);
}
list_for_each_entry(p, &pdev_list, list) {
if (p->cpu != cpu)
continue;
platform_device_unregister(p->pdev);
list_del(&p->list);
mutex_unlock(&pdev_list_mutex);
kfree(p);
for_each_cpu(i, cpu_sibling_mask(cpu))
if (i != cpu && !coretemp_device_add(i))
break;
return;
}
mutex_unlock(&pdev_list_mutex);
}