f6085a96c9
Unregister the MEI VSC interrupt handler before system suspend and
re-register it at system resume time. This mirrors implementation of other
MEI devices.
This patch fixes the bug that causes continuous stream of MEI VSC errors
after system resume.
Fixes: 386a766c41 ("mei: Add MEI hardware support for IVSC device")
Cc: stable@vger.kernel.org # for 6.8
Reported-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Wentong Wu <wentong.wu@intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Tomas Winkler <tomas.winkler@intel.com>
Link: https://lore.kernel.org/r/20240403051341.3534650-2-wentong.wu@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
54 lines
1.4 KiB
C
54 lines
1.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2023, Intel Corporation.
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* Intel Visual Sensing Controller Transport Layer Linux driver
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*/
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#ifndef _VSC_TP_H_
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#define _VSC_TP_H_
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#include <linux/types.h>
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#define VSC_TP_CMD_WRITE 0x01
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#define VSC_TP_CMD_READ 0x02
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#define VSC_TP_CMD_ACK 0x10
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#define VSC_TP_CMD_NACK 0x11
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#define VSC_TP_CMD_BUSY 0x12
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struct vsc_tp;
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/**
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* typedef vsc_event_cb_t - event callback function signature
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* @context: the execution context of who registered this callback
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*
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* The callback function is called in interrupt context and the data
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* payload is only valid during the call. If the user needs access
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* the data payload later, it must copy the payload.
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*/
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typedef void (*vsc_tp_event_cb_t)(void *context);
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int vsc_tp_rom_xfer(struct vsc_tp *tp, const void *obuf, void *ibuf,
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size_t len);
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int vsc_tp_xfer(struct vsc_tp *tp, u8 cmd, const void *obuf, size_t olen,
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void *ibuf, size_t ilen);
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int vsc_tp_register_event_cb(struct vsc_tp *tp, vsc_tp_event_cb_t event_cb,
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void *context);
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int vsc_tp_request_irq(struct vsc_tp *tp);
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void vsc_tp_free_irq(struct vsc_tp *tp);
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void vsc_tp_intr_enable(struct vsc_tp *tp);
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void vsc_tp_intr_disable(struct vsc_tp *tp);
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void vsc_tp_intr_synchronize(struct vsc_tp *tp);
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void vsc_tp_reset(struct vsc_tp *tp);
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bool vsc_tp_need_read(struct vsc_tp *tp);
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int vsc_tp_init(struct vsc_tp *tp, struct device *dev);
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#endif
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