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| author | Fan Wu <fanwu01@zju.edu.cn> | 2026-08-20 13:53:06 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-09-01 16:50:04 +0200 |
| commit | 263f7d61a4201cde16849b2d016251806e7418be (patch) | |
| tree | 861df7c5b878b85741cf319ece81111b4c41c3b1 /drivers/pinctrl/pinctrl-utils.h | |
| download | linux-stable-263f7d61a4201cde16849b2d016251806e7418be.tar.gz linux-stable-263f7d61a4201cde16849b2d016251806e7418be.zip | |
usb: typec: qcom-pmic-typec: disable cc_debounce_dwork on stopgrafted
cc_debounce_dwork is queued from the set_cc() and start_toggling()
callbacks, which run from TCPM's kthread worker. port_stop() returns
before tcpm_unregister_port() destroys that worker. Flushing the worker
during unregister may therefore run a callback which queues the delayed
work after port_stop() has returned.
The delayed work can then run after devres has freed pmic_typec_port.
Use disable_delayed_work_sync() in port_stop() to cancel a pending
instance and prevent the TCPM callbacks from queueing another one.
This issue was found by an in-house static analysis tool.
Fixes: a4422ff22142 ("usb: typec: qcom: Add Qualcomm PMIC Type-C driver")
Cc: stable <stable@kernel.org> # v6.10+
Assisted-by: Codex:gpt-5.6
Signed-off-by: Fan Wu <fanwu01@zju.edu.cn>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20260820135307.153773-2-fanwu01@zju.edu.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/pinctrl/pinctrl-utils.h')
| -rw-r--r-- | drivers/pinctrl/pinctrl-utils.h | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/pinctrl/pinctrl-utils.h b/drivers/pinctrl/pinctrl-utils.h new file mode 100644 index 000000000..203fba257 --- /dev/null +++ b/drivers/pinctrl/pinctrl-utils.h @@ -0,0 +1,35 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Utils functions to implement the pincontrol driver. + * + * Copyright (c) 2013, NVIDIA Corporation. + * + * Author: Laxman Dewangan <ldewangan@nvidia.com> + */ +#ifndef __PINCTRL_UTILS_H__ +#define __PINCTRL_UTILS_H__ + +#include <linux/pinctrl/machine.h> + +struct pinctrl_dev; +struct pinctrl_map; + +int pinctrl_utils_reserve_map(struct pinctrl_dev *pctldev, + struct pinctrl_map **map, unsigned int *reserved_maps, + unsigned int *num_maps, unsigned int reserve); +int pinctrl_utils_add_map_mux(struct pinctrl_dev *pctldev, + struct pinctrl_map **map, unsigned int *reserved_maps, + unsigned int *num_maps, const char *group, + const char *function); +int pinctrl_utils_add_map_configs(struct pinctrl_dev *pctldev, + struct pinctrl_map **map, unsigned int *reserved_maps, + unsigned int *num_maps, const char *group, + unsigned long *configs, unsigned int num_configs, + enum pinctrl_map_type type); +int pinctrl_utils_add_config(struct pinctrl_dev *pctldev, + unsigned long **configs, unsigned int *num_configs, + unsigned long config); +void pinctrl_utils_free_map(struct pinctrl_dev *pctldev, + struct pinctrl_map *map, unsigned int num_maps); + +#endif /* __PINCTRL_UTILS_H__ */ |