diff mbox

[v2,5/8] PM / Domains: Fix unsafe iteration over modified list of domain providers

Message ID 20170612151748.7380-6-krzk@kernel.org (mailing list archive)
State Deferred
Headers show

Commit Message

Krzysztof Kozlowski June 12, 2017, 3:17 p.m. UTC
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(-)

Comments

Ulf Hansson June 13, 2017, 10:38 a.m. UTC | #1
On 12 June 2017 at 17:17, Krzysztof Kozlowski <krzk@kernel.org> wrote:
> 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>

Acked-by: Ulf Hansson <ulf.hansson@linaro.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 d1e438024e46..b74b5111957a 100644
> --- a/drivers/base/power/domain.c
> +++ b/drivers/base/power/domain.c
> @@ -1789,12 +1789,12 @@ 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
>
diff mbox

Patch

diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index d1e438024e46..b74b5111957a 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -1789,12 +1789,12 @@  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