From 263f7d61a4201cde16849b2d016251806e7418be Mon Sep 17 00:00:00 2001 From: Fan Wu Date: Thu, 20 Aug 2026 13:53:06 +0000 Subject: usb: typec: qcom-pmic-typec: disable cc_debounce_dwork on stop 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 # v6.10+ Assisted-by: Codex:gpt-5.6 Signed-off-by: Fan Wu Acked-by: Heikki Krogerus Link: https://patch.msgid.link/20260820135307.153773-2-fanwu01@zju.edu.cn Signed-off-by: Greg Kroah-Hartman --- include/sound/seq_device.h | 86 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 86 insertions(+) create mode 100644 include/sound/seq_device.h (limited to 'include/sound/seq_device.h') diff --git a/include/sound/seq_device.h b/include/sound/seq_device.h new file mode 100644 index 000000000..3137d4c5f --- /dev/null +++ b/include/sound/seq_device.h @@ -0,0 +1,86 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +#ifndef __SOUND_SEQ_DEVICE_H +#define __SOUND_SEQ_DEVICE_H + +/* + * ALSA sequencer device management + * Copyright (c) 1999 by Takashi Iwai + */ + +/* + * registered device information + */ + +struct snd_seq_device { + /* device info */ + struct snd_card *card; /* sound card */ + int device; /* device number */ + const char *id; /* driver id */ + char name[80]; /* device name */ + int argsize; /* size of the argument */ + void *driver_data; /* private data for driver */ + void *private_data; /* private data for the caller */ + void (*private_free)(struct snd_seq_device *device); + struct device dev; + unsigned char args[]; /* driver-specific argument */ +}; + +#define to_seq_dev(_dev) \ + container_of(_dev, struct snd_seq_device, dev) + +/* sequencer driver */ + +/* driver operators + * probe: + * Initialize the device with given parameters. + * Typically, + * 1. call snd_hwdep_new + * 2. allocate private data and initialize it + * 3. call snd_hwdep_register + * 4. store the instance to dev->driver_data pointer. + * + * remove: + * Release the private data. + * Typically, call snd_device_free(dev->card, dev->driver_data) + */ +struct snd_seq_driver { + int (*probe)(struct snd_seq_device *dev); + void (*remove)(struct snd_seq_device *dev); + struct device_driver driver; + char *id; + int argsize; +}; + +#define to_seq_drv(_drv) \ + container_of(_drv, struct snd_seq_driver, driver) + +/* + * prototypes + */ +#ifdef CONFIG_MODULES +void snd_seq_device_load_drivers(void); +#else +#define snd_seq_device_load_drivers() +#endif +int snd_seq_device_new(struct snd_card *card, int device, const char *id, + int argsize, struct snd_seq_device **result); + +#define SNDRV_SEQ_DEVICE_ARGPTR(dev) ((void *)(dev)->args) + +int __must_check __snd_seq_driver_register(struct snd_seq_driver *drv, + struct module *mod); +#define snd_seq_driver_register(drv) \ + __snd_seq_driver_register(drv, THIS_MODULE) +void snd_seq_driver_unregister(struct snd_seq_driver *drv); + +#define module_snd_seq_driver(drv) \ + module_driver(drv, snd_seq_driver_register, snd_seq_driver_unregister) + +/* + * id strings for generic devices + */ +#define SNDRV_SEQ_DEV_ID_MIDISYNTH "seq-midi" +#define SNDRV_SEQ_DEV_ID_OPL3 "opl3-synth" +#define SNDRV_SEQ_DEV_ID_UMP "seq-ump-client" + +#endif /* __SOUND_SEQ_DEVICE_H */ -- cgit v1.3.1