[PATCH 5/8] PM / domains: Fix unsafe iteration over modified list of domain providers

Krzysztof Kozlowski
2017-06-09T16:09:23Z

of_genpd_del_provider() iterates over list of domain provides and
removes matching element thus it has to use safe version of list
iteration.

Fixes: aa42240ab254 ("PM / Domains: Add generic OF-based PM domain look-up")
Cc: <stable@vger.kernel.org>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
---
drivers/base/power/domain.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index 325962702bc8..e426ceff1a59 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -1794,12 +1794,12 @@ EXPORT_SYMBOL_GPL(of_genpd_add_provider_onecell);
*/
void of_genpd_del_provider(struct device_node *np)
{
- struct of_genpd_provider *cp;
+ struct of_genpd_provider *cp, *tmp;
struct generic_pm_domain *gpd;

mutex_lock(&gpd_list_lock);
mutex_lock(&of_genpd_mutex);
- list_for_each_entry(cp, &of_genpd_providers, link) {
+ list_for_each_entry_safe(cp, tmp, &of_genpd_providers, link) {
if (cp->node == np) {
/*
* For each PM domain associated with the
--
2.9.3