From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Charles Keepax <ckeepax@opensource.cirrus.com>,
Linus Walleij <linus.walleij@linaro.org>,
Sasha Levin <sashal@kernel.org>,
linux-gpio@vger.kernel.org
Subject: [PATCH AUTOSEL 4.14 04/28] pinctrl: core: Remove extra kref_get which blocks hogs being freed
Date: Wed, 18 Mar 2020 16:55:31 -0400 [thread overview]
Message-ID: <20200318205555.17447-4-sashal@kernel.org> (raw)
In-Reply-To: <20200318205555.17447-1-sashal@kernel.org>
From: Charles Keepax <ckeepax@opensource.cirrus.com>
[ Upstream commit aafd56fc79041bf36f97712d4b35208cbe07db90 ]
kref_init starts with the reference count at 1, which will be balanced
by the pinctrl_put in pinctrl_unregister. The additional kref_get in
pinctrl_claim_hogs will increase this count to 2 and cause the hogs to
not get freed when pinctrl_unregister is called.
Fixes: 6118714275f0 ("pinctrl: core: Fix pinctrl_register_and_init() with pinctrl_enable()")
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20200228154142.13860-1-ckeepax@opensource.cirrus.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/pinctrl/core.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/pinctrl/core.c b/drivers/pinctrl/core.c
index c55517312485d..08ea74177de29 100644
--- a/drivers/pinctrl/core.c
+++ b/drivers/pinctrl/core.c
@@ -2031,7 +2031,6 @@ static int pinctrl_claim_hogs(struct pinctrl_dev *pctldev)
return PTR_ERR(pctldev->p);
}
- kref_get(&pctldev->p->users);
pctldev->hog_default =
pinctrl_lookup_state(pctldev->p, PINCTRL_STATE_DEFAULT);
if (IS_ERR(pctldev->hog_default)) {
--
2.20.1
next prev parent reply other threads:[~2020-03-18 21:00 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-18 20:55 [PATCH AUTOSEL 4.14 01/28] cgroup-v1: cgroup_pidlist_next should update position index Sasha Levin
2020-03-18 20:55 ` [PATCH AUTOSEL 4.14 02/28] cgroup: Iterate tasks that did not finish do_exit() Sasha Levin
2020-03-18 20:55 ` [PATCH AUTOSEL 4.14 03/28] batman-adv: Don't schedule OGM for disabled interface Sasha Levin
2020-03-18 20:55 ` Sasha Levin [this message]
2020-03-18 20:55 ` [PATCH AUTOSEL 4.14 05/28] r8152: check disconnect status after long sleep Sasha Levin
2020-03-18 20:55 ` [PATCH AUTOSEL 4.14 06/28] bnxt_en: reinitialize IRQs when MTU is modified Sasha Levin
2020-03-18 20:55 ` [PATCH AUTOSEL 4.14 07/28] cpupower: avoid multiple definition with gcc -fno-common Sasha Levin
2020-03-18 20:55 ` [PATCH AUTOSEL 4.14 08/28] fib: add missing attribute validation for tun_id Sasha Levin
2020-03-18 20:55 ` [PATCH AUTOSEL 4.14 09/28] can: add missing attribute validation for termination Sasha Levin
2020-03-18 20:55 ` [PATCH AUTOSEL 4.14 10/28] macsec: add missing attribute validation for port Sasha Levin
2020-03-18 20:55 ` [PATCH AUTOSEL 4.14 11/28] team: add missing attribute validation for port ifindex Sasha Levin
2020-03-18 20:55 ` [PATCH AUTOSEL 4.14 12/28] team: add missing attribute validation for array index Sasha Levin
2020-03-18 20:55 ` [PATCH AUTOSEL 4.14 13/28] netfilter: cthelper: add missing attribute validation for cthelper Sasha Levin
2020-03-18 20:55 ` [PATCH AUTOSEL 4.14 14/28] netfilter: nft_payload: add missing attribute validation for payload csum flags Sasha Levin
2020-03-18 20:55 ` [PATCH AUTOSEL 4.14 15/28] drivers/of/of_mdio.c:fix of_mdiobus_register() Sasha Levin
2020-03-18 20:55 ` [PATCH AUTOSEL 4.14 16/28] cgroup1: don't call release_agent when it is "" Sasha Levin
2020-03-18 20:55 ` [PATCH AUTOSEL 4.14 17/28] dt-bindings: net: FMan erratum A050385 Sasha Levin
2020-03-18 20:55 ` [PATCH AUTOSEL 4.14 18/28] arm64: dts: ls1043a: " Sasha Levin
2020-03-18 20:55 ` [PATCH AUTOSEL 4.14 19/28] fsl/fman: detect " Sasha Levin
2020-03-18 20:55 ` [PATCH AUTOSEL 4.14 20/28] virtio-blk: fix hw_queue stopped on arbitrary error Sasha Levin
2020-03-18 20:55 ` [PATCH AUTOSEL 4.14 21/28] ipvlan: add cond_resched_rcu() while processing muticast backlog Sasha Levin
2020-03-18 20:55 ` [PATCH AUTOSEL 4.14 22/28] ipvlan: do not use cond_resched_rcu() in ipvlan_process_multicast() Sasha Levin
2020-03-18 20:55 ` [PATCH AUTOSEL 4.14 23/28] scsi: ipr: Fix softlockup when rescanning devices in petitboot Sasha Levin
2020-03-18 20:55 ` [PATCH AUTOSEL 4.14 24/28] mac80211: Do not send mesh HWMP PREQ if HWMP is disabled Sasha Levin
2020-03-18 20:55 ` [PATCH AUTOSEL 4.14 25/28] dpaa_eth: Remove unnecessary boolean expression in dpaa_get_headroom Sasha Levin
2020-03-18 20:55 ` [PATCH AUTOSEL 4.14 26/28] sxgbe: Fix off by one in samsung driver strncpy size arg Sasha Levin
2020-03-18 20:55 ` [PATCH AUTOSEL 4.14 27/28] iommu/vt-d: quirk_ioat_snb_local_iommu: replace WARN_TAINT with pr_warn + add_taint Sasha Levin
2020-03-18 20:55 ` [PATCH AUTOSEL 4.14 28/28] iommu/vt-d: Fix the wrong printing in RHSA parsing Sasha Levin
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