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PM / Domains: Fix unsafe iteration over modified list of device links

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commit c6e83cac3eda5f7dd32ee1453df2f7abb5c6cd46 upstream.

pm_genpd_remove_subdomain() iterates over domain's master_links list and
removes matching element thus it has to use safe version of list
iteration.

Fixes: f721889ff65a ("PM / Domains: Support for generic I/O PM domains (v8)")
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Krzysztof Kozlowski 2017-06-28 16:56:18 +02:00 committed by Greg Kroah-Hartman
parent 50b40109fa
commit f422cfc38e
1 changed files with 2 additions and 2 deletions
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4
drivers/base/power/domain.c
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@ -1373,7 +1373,7 @@ EXPORT_SYMBOL_GPL(pm_genpd_add_subdomain);
int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
struct generic_pm_domain *subdomain)
{
struct gpd_link *link;
struct gpd_link *l, *link;
int ret = -EINVAL;
if (IS_ERR_OR_NULL(genpd) || IS_ERR_OR_NULL(subdomain))
@ -1388,7 +1388,7 @@ int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
goto out;
}
list_for_each_entry(link, &genpd->master_links, master_node) {
list_for_each_entry_safe(link, l, &genpd->master_links, master_node) {
if (link->slave != subdomain)
continue;