diff options
| 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 /include/asm-generic/switch_to.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 'include/asm-generic/switch_to.h')
| -rw-r--r-- | include/asm-generic/switch_to.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/include/asm-generic/switch_to.h b/include/asm-generic/switch_to.h new file mode 100644 index 000000000..5897d100a --- /dev/null +++ b/include/asm-generic/switch_to.h @@ -0,0 +1,26 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* Generic task switch macro wrapper. + * + * It should be possible to use these on really simple architectures, + * but it serves more as a starting point for new ports. + * + * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + */ +#ifndef __ASM_GENERIC_SWITCH_TO_H +#define __ASM_GENERIC_SWITCH_TO_H + +#include <linux/thread_info.h> + +/* + * Context switching is now performed out-of-line in switch_to.S + */ +extern struct task_struct *__switch_to(struct task_struct *, + struct task_struct *); + +#define switch_to(prev, next, last) \ + do { \ + ((last) = __switch_to((prev), (next))); \ + } while (0) + +#endif /* __ASM_GENERIC_SWITCH_TO_H */ |