Merge "dsp: add support to crash device when send APR CMD to ADSP timed out" (81e002d2) · Commits · e / devices / android_kernel_fairphone_FP5

dsp/q6lsm.c

+30 −1

Original line number	Diff line number	Diff line
		// SPDX-License-Identifier: GPL-2.0-only
		/*
		* Copyright (c) 2013-2020, Linux Foundation. All rights reserved.
		* Copyright (c) 2013-2021, Linux Foundation. All rights reserved.
		*/
		#include <linux/fs.h>
		#include <linux/mutex.h>
		@@ -63,6 +63,12 @@ struct lsm_common {
		struct cal_type_data *cal_data[LSM_MAX_CAL_IDX];

		struct mutex apr_lock;

		#ifdef CONFIG_DEBUG_FS
		/* Debugfs related */
		struct dentry *entry;
		bool panic_on_timeout;
		#endif
		};

		static struct lsm_common lsm_common;
		@@ -508,6 +514,13 @@ static int q6lsm_apr_send_pkt(struct lsm_client client, void handle,
		__func__, msg_hdr->opcode, msg_hdr->pkt_size);
		/* ret = 0 means wait timed out */
		ret = -ETIMEDOUT;
		#ifdef CONFIG_DEBUG_FS
		/*
		* If panic_on_timeout flag is explicitly set through the debugfs,
		* then trigger a device crash here to aid debugging.
		*/
		BUG_ON(lsm_common.panic_on_timeout);
		#endif
		}
		} else {
		ret = 0;
		@@ -3071,10 +3084,26 @@ int __init q6lsm_init(void)
		if (q6lsm_init_cal_data())
		pr_err("%s: could not init cal data!\n", __func__);

		#ifdef CONFIG_DEBUG_FS
		lsm_common.entry = debugfs_create_dir("q6lsm_apr", NULL);
		if (!IS_ERR_OR_NULL(lsm_common.entry)) {
		if (IS_ERR(debugfs_create_bool("panic_on_timeout", 0644,
		lsm_common.entry,
		&lsm_common.panic_on_timeout)))
		lsm_common.panic_on_timeout = false;
		else
		pr_info("%s: panic_on_timeout debugfs flag is created\n", __func__);
		}
		#endif
		return 0;
		}

		void q6lsm_exit(void)
		{
		lsm_delete_cal_data();

		#ifdef CONFIG_DEBUG_FS
		debugfs_remove_recursive(lsm_common.entry);
		lsm_common.entry = NULL;
		#endif
		}