Merge "scsi: ufs: add UFS fault injection to hibernate enter and exit" (817d3dd2) · Commits · e / devices / android_kernel_oneplus_sm8150

drivers/scsi/ufs/ufs-debugfs.c

+22 −0

Original line number	Diff line number	Diff line
		@@ -100,6 +100,16 @@ static const int err_inject_query_err_codes[] = {
		0xFF,
		};

		static const int err_inject_hibern8_err_codes[] = {
		-EIO,
		-ETIMEDOUT,
		-1,
		PWR_REMOTE,
		PWR_BUSY,
		PWR_ERROR_CAP,
		PWR_FATAL_ERROR,
		};

		static struct ufsdbg_err_scenario err_scen_arr[] = {
		{
		"ERR_INJECT_INTR",
		@@ -126,6 +136,16 @@ static struct ufsdbg_err_scenario err_scen_arr[] = {
		err_inject_query_err_codes,
		ARRAY_SIZE(err_inject_query_err_codes),
		},
		{
		"ERR_INJECT_HIBERN8_ENTER",
		err_inject_hibern8_err_codes,
		ARRAY_SIZE(err_inject_hibern8_err_codes),
		},
		{
		"ERR_INJECT_HIBERN8_EXIT",
		err_inject_hibern8_err_codes,
		ARRAY_SIZE(err_inject_hibern8_err_codes),
		},
		};

		static bool inject_fatal_err_tr(struct ufs_hba *hba, u8 ocs_err)
		@@ -281,6 +301,8 @@ void ufsdbg_error_inject_dispatcher(struct ufs_hba *hba,
		case ERR_INJECT_UIC:
		case ERR_INJECT_DME_ATTR:
		case ERR_INJECT_QUERY:
		case ERR_INJECT_HIBERN8_ENTER:
		case ERR_INJECT_HIBERN8_EXIT:
		goto should_fail;
		default:
		dev_err(hba->dev, "%s: unsupported error scenario\n",

+3 −1

Original line number	Diff line number	Diff line
		/* Copyright (c) 2013-2016, The Linux Foundation. All rights reserved.
		/* Copyright (c) 2013-2016, 2018, The Linux Foundation. All rights reserved.
		*
		* This program is free software; you can redistribute it and/or modify
		* it under the terms of the GNU General Public License version 2 and
		@@ -29,6 +29,8 @@ enum ufsdbg_err_inject_scenario {
		ERR_INJECT_UIC,
		ERR_INJECT_DME_ATTR,
		ERR_INJECT_QUERY,
		ERR_INJECT_HIBERN8_ENTER,
		ERR_INJECT_HIBERN8_EXIT,
		ERR_INJECT_MAX_ERR_SCENARIOS,
		};

+4 −0

Original line number	Diff line number	Diff line
		@@ -5190,6 +5190,8 @@ static int __ufshcd_uic_hibern8_enter(struct ufs_hba *hba)
		trace_ufshcd_profile_hibern8(dev_name(hba->dev), "enter",
		ktime_to_us(ktime_sub(ktime_get(), start)), ret);

		ufsdbg_error_inject_dispatcher(hba, ERR_INJECT_HIBERN8_ENTER, 0, &ret);

		/*
		* Do full reinit if enter failed or if LINERESET was detected during
		* Hibern8 operation. After LINERESET, link moves to default PWM-G1
		@@ -5255,6 +5257,8 @@ int ufshcd_uic_hibern8_exit(struct ufs_hba *hba)
		trace_ufshcd_profile_hibern8(dev_name(hba->dev), "exit",
		ktime_to_us(ktime_sub(ktime_get(), start)), ret);

		ufsdbg_error_inject_dispatcher(hba, ERR_INJECT_HIBERN8_EXIT, 0, &ret);

		/* Do full reinit if exit failed */
		if (ret) {
		ufshcd_update_error_stats(hba, UFS_ERR_HIBERN8_EXIT);