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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: f721889ff6 ("PM / Domains: Support for generic I/O PM domains (v8)")
Cc: 3.1+ <stable@vger.kernel.org> # 3.1+
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: Willy Tarreau <w@1wt.eu>
This commit is contained in:
Krzysztof Kozlowski
2017-06-28 16:56:18 +02:00
committed by Willy Tarreau
parent f9c9c73b86
commit c11c8fcaa2
1 changed files with 2 additions and 2 deletions
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drivers/base/power/domain.c
+2 -2
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@@ -1692,7 +1692,7 @@ int pm_genpd_add_subdomain_names(const char *master_name,
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))
@@ -1701,7 +1701,7 @@ int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
start:
genpd_acquire_lock(genpd);
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;