From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Zou Wei <zou_wei@huawei.com>, Hulk Robot <hulkci@huawei.com>,
Thierry Reding <thierry.reding@gmail.com>,
Sasha Levin <sashal@kernel.org>,
linux-pwm@vger.kernel.org
Subject: [PATCH AUTOSEL 5.10 29/37] pwm: img: Fix PM reference leak in img_pwm_enable()
Date: Sat, 10 Jul 2021 19:50:07 -0400 [thread overview]
Message-ID: <20210710235016.3221124-29-sashal@kernel.org> (raw)
In-Reply-To: <20210710235016.3221124-1-sashal@kernel.org>
From: Zou Wei <zou_wei@huawei.com>
[ Upstream commit fde25294dfd8e36e4e30b693c27a86232864002a ]
pm_runtime_get_sync will increment pm usage counter even it failed.
Forgetting to putting operation will result in reference leak here.
Fix it by replacing it with pm_runtime_resume_and_get to keep usage
counter balanced.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zou Wei <zou_wei@huawei.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/pwm/pwm-img.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/pwm/pwm-img.c b/drivers/pwm/pwm-img.c
index a34d95ed70b2..22c002e685b3 100644
--- a/drivers/pwm/pwm-img.c
+++ b/drivers/pwm/pwm-img.c
@@ -156,7 +156,7 @@ static int img_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwm)
struct img_pwm_chip *pwm_chip = to_img_pwm_chip(chip);
int ret;
- ret = pm_runtime_get_sync(chip->dev);
+ ret = pm_runtime_resume_and_get(chip->dev);
if (ret < 0)
return ret;
--
2.30.2
next prev parent reply other threads:[~2021-07-10 23:51 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-10 23:49 [PATCH AUTOSEL 5.10 01/37] power: supply: sc27xx: Add missing MODULE_DEVICE_TABLE Sasha Levin
2021-07-10 23:49 ` [PATCH AUTOSEL 5.10 02/37] power: supply: sc2731_charger: " Sasha Levin
2021-07-10 23:49 ` [PATCH AUTOSEL 5.10 03/37] f2fs: fix to avoid racing on fsync_entry_slab by multi filesystem instances Sasha Levin
2021-07-10 23:49 ` [PATCH AUTOSEL 5.10 04/37] pwm: spear: Don't modify HW state in .remove callback Sasha Levin
2021-07-10 23:49 ` [PATCH AUTOSEL 5.10 05/37] PCI: ftpci100: Rename macro name collision Sasha Levin
2021-07-10 23:49 ` [PATCH AUTOSEL 5.10 06/37] power: supply: ab8500: Avoid NULL pointers Sasha Levin
2021-07-10 23:49 ` [PATCH AUTOSEL 5.10 07/37] PCI: hv: Fix a race condition when removing the device Sasha Levin
2021-07-10 23:49 ` [PATCH AUTOSEL 5.10 08/37] power: supply: max17042: Do not enforce (incorrect) interrupt trigger type Sasha Levin
2021-07-10 23:49 ` [PATCH AUTOSEL 5.10 09/37] power: reset: gpio-poweroff: add missing MODULE_DEVICE_TABLE Sasha Levin
2021-07-10 23:49 ` [PATCH AUTOSEL 5.10 10/37] ARM: 9087/1: kprobes: test-thumb: fix for LLVM_IAS=1 Sasha Levin
2021-07-10 23:49 ` [PATCH AUTOSEL 5.10 11/37] PCI/P2PDMA: Avoid pci_get_slot(), which may sleep Sasha Levin
2021-07-10 23:49 ` [PATCH AUTOSEL 5.10 12/37] NFSv4: Fix delegation return in cases where we have to retry Sasha Levin
2021-07-10 23:49 ` [PATCH AUTOSEL 5.10 13/37] PCI: pciehp: Ignore Link Down/Up caused by DPC Sasha Levin
2021-07-10 23:49 ` [PATCH AUTOSEL 5.10 14/37] watchdog: Fix possible use-after-free in wdt_startup() Sasha Levin
2021-07-10 23:49 ` [PATCH AUTOSEL 5.10 15/37] watchdog: sc520_wdt: Fix possible use-after-free in wdt_turnoff() Sasha Levin
2021-07-10 23:49 ` [PATCH AUTOSEL 5.10 16/37] watchdog: Fix possible use-after-free by calling del_timer_sync() Sasha Levin
2021-07-10 23:49 ` [PATCH AUTOSEL 5.10 17/37] watchdog: imx_sc_wdt: fix pretimeout Sasha Levin
2021-07-10 23:49 ` [PATCH AUTOSEL 5.10 18/37] watchdog: iTCO_wdt: Account for rebooting on second timeout Sasha Levin
2021-07-10 23:49 ` [PATCH AUTOSEL 5.10 19/37] x86/fpu: Return proper error codes from user access functions Sasha Levin
2021-07-10 23:49 ` [PATCH AUTOSEL 5.10 20/37] remoteproc: core: Fix cdev remove and rproc del Sasha Levin
2021-07-10 23:49 ` [PATCH AUTOSEL 5.10 21/37] PCI: tegra: Add missing MODULE_DEVICE_TABLE Sasha Levin
2021-07-10 23:50 ` [PATCH AUTOSEL 5.10 22/37] orangefs: fix orangefs df output Sasha Levin
2021-07-10 23:50 ` [PATCH AUTOSEL 5.10 23/37] ceph: remove bogus checks and WARN_ONs from ceph_set_page_dirty Sasha Levin
2021-07-10 23:50 ` [PATCH AUTOSEL 5.10 24/37] drm/gma500: Add the missed drm_gem_object_put() in psb_user_framebuffer_create() Sasha Levin
2021-07-10 23:50 ` [PATCH AUTOSEL 5.10 25/37] NFS: nfs_find_open_context() may only select open files Sasha Levin
2021-07-10 23:50 ` [PATCH AUTOSEL 5.10 26/37] power: supply: charger-manager: add missing MODULE_DEVICE_TABLE Sasha Levin
2021-07-10 23:50 ` [PATCH AUTOSEL 5.10 27/37] power: supply: ab8500: " Sasha Levin
2021-07-10 23:50 ` [PATCH AUTOSEL 5.10 28/37] drm/amdkfd: fix sysfs kobj leak Sasha Levin
2021-07-10 23:50 ` Sasha Levin [this message]
2021-07-10 23:50 ` [PATCH AUTOSEL 5.10 30/37] pwm: tegra: Don't modify HW state in .remove callback Sasha Levin
2021-07-10 23:50 ` [PATCH AUTOSEL 5.10 31/37] ACPI: AMBA: Fix resource name in /proc/iomem Sasha Levin
2021-07-10 23:50 ` [PATCH AUTOSEL 5.10 32/37] ACPI: video: Add quirk for the Dell Vostro 3350 Sasha Levin
2021-07-10 23:50 ` [PATCH AUTOSEL 5.10 33/37] PCI: rockchip: Register IRQ handlers after device and data are ready Sasha Levin
2021-07-10 23:50 ` [PATCH AUTOSEL 5.10 34/37] virtio-blk: Fix memory leak among suspend/resume procedure Sasha Levin
2021-07-10 23:50 ` [PATCH AUTOSEL 5.10 35/37] virtio_net: Fix error handling in virtnet_restore() Sasha Levin
2021-07-10 23:50 ` [PATCH AUTOSEL 5.10 36/37] virtio_console: Assure used length from device is limited Sasha Levin
2021-07-10 23:50 ` [PATCH AUTOSEL 5.10 37/37] virtio: fix up virtio_disable_cb Sasha Levin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210710235016.3221124-29-sashal@kernel.org \
--to=sashal@kernel.org \
--cc=hulkci@huawei.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pwm@vger.kernel.org \
--cc=stable@vger.kernel.org \
--cc=thierry.reding@gmail.com \
--cc=zou_wei@huawei.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox