From: Ulf Hansson <ulf.hansson@linaro.org>
To: Krzysztof Kozlowski <krzk@kernel.org>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>,
Kevin Hilman <khilman@kernel.org>,
Len Brown <len.brown@intel.com>, Pavel Machek <pavel@ucw.cz>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
"linux-pm@vger.kernel.org" <linux-pm@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"# 4.0+" <stable@vger.kernel.org>
Subject: Re: [PATCH v2 6/8] PM / Domains: Fix unsafe iteration over modified list of domains
Date: Tue, 13 Jun 2017 12:39:14 +0200 [thread overview]
Message-ID: <CAPDyKFqo_JscR6e16pXceCT5YqwNFozkJw+YNB5Jz60kQd0Vxw@mail.gmail.com> (raw)
In-Reply-To: <20170612151748.7380-7-krzk@kernel.org>
On 12 June 2017 at 17:17, Krzysztof Kozlowski <krzk@kernel.org> wrote:
> of_genpd_remove_last() iterates over list of domains and removes
> matching element thus it has to use safe version of list iteration.
>
> Fixes: 17926551c98a ("PM / Domains: Add support for removing nested PM domains by provider")
> 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 b74b5111957a..33467beaeea4 100644
> --- a/drivers/base/power/domain.c
> +++ b/drivers/base/power/domain.c
> @@ -1934,14 +1934,14 @@ EXPORT_SYMBOL_GPL(of_genpd_add_subdomain);
> */
> struct generic_pm_domain *of_genpd_remove_last(struct device_node *np)
> {
> - struct generic_pm_domain *gpd, *genpd = ERR_PTR(-ENOENT);
> + struct generic_pm_domain *gpd, *tmp, *genpd = ERR_PTR(-ENOENT);
> int ret;
>
> if (IS_ERR_OR_NULL(np))
> return ERR_PTR(-EINVAL);
>
> mutex_lock(&gpd_list_lock);
> - list_for_each_entry(gpd, &gpd_list, gpd_list_node) {
> + list_for_each_entry_safe(gpd, tmp, &gpd_list, gpd_list_node) {
> if (gpd->provider == &np->fwnode) {
> ret = genpd_remove(gpd);
> genpd = ret ? ERR_PTR(ret) : gpd;
> --
> 2.9.3
>
next prev parent reply other threads:[~2017-06-13 10:39 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-12 15:17 [PATCH v2 0/8] PM / Domains: Bunch of small improvements and fixes Krzysztof Kozlowski
2017-06-12 15:17 ` [PATCH v2 1/8] PM / Domains: Constify genpd pointer Krzysztof Kozlowski
2017-06-13 10:36 ` Ulf Hansson
2017-06-12 15:17 ` [RFT v2 2/8] PM / Domains: Handle safely genpd_syscore_switch() call on non-genpd device Krzysztof Kozlowski
2017-06-13 10:38 ` Ulf Hansson
2017-06-12 15:17 ` [PATCH v2 3/8] PM / Domains: Add lockdep asserts for domains list mutex Krzysztof Kozlowski
2017-06-12 19:09 ` Ulf Hansson
2017-06-13 7:12 ` Krzysztof Kozlowski
2017-06-13 8:34 ` Ulf Hansson
2017-06-12 15:17 ` [PATCH v2 4/8] PM / Domains: Fix unsafe iteration over modified list of device links Krzysztof Kozlowski
2017-06-13 10:38 ` Ulf Hansson
2017-06-12 15:17 ` [PATCH v2 5/8] PM / Domains: Fix unsafe iteration over modified list of domain providers Krzysztof Kozlowski
2017-06-13 10:38 ` Ulf Hansson
2017-06-12 15:17 ` [PATCH v2 6/8] PM / Domains: Fix unsafe iteration over modified list of domains Krzysztof Kozlowski
2017-06-13 10:39 ` Ulf Hansson [this message]
2017-06-12 15:17 ` [PATCH v2 7/8] PM / Domains: Fix missing default_power_down_ok comment Krzysztof Kozlowski
2017-06-13 10:39 ` Ulf Hansson
2017-06-12 15:17 ` [RFC v2 8/8] PM / Domains: Add asserts for PM domain locks Krzysztof Kozlowski
2017-06-27 22:51 ` [PATCH v2 0/8] PM / Domains: Bunch of small improvements and fixes Rafael J. Wysocki
2017-06-28 14:48 ` Krzysztof Kozlowski
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