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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Can Guo <cang@codeaurora.org>, Avri Altman <avri.altman@wdc.com>,
	Stanley Chu <stanley.chu@mediatek.com>,
	"Martin K . Petersen" <martin.petersen@oracle.com>,
	Sasha Levin <sashal@kernel.org>,
	linux-scsi@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-mediatek@lists.infradead.org
Subject: [PATCH AUTOSEL 5.4 04/26] scsi: ufs: Correct the LUN used in eh_device_reset_handler() callback
Date: Tue, 19 Jan 2021 20:26:41 -0500	[thread overview]
Message-ID: <20210120012704.770095-4-sashal@kernel.org> (raw)
In-Reply-To: <20210120012704.770095-1-sashal@kernel.org>

From: Can Guo <cang@codeaurora.org>

[ Upstream commit 35fc4cd34426c242ab015ef280853b7bff101f48 ]

Users can initiate resets to specific SCSI device/target/host through
IOCTL. When this happens, the SCSI cmd passed to eh_device/target/host
_reset_handler() callbacks is initialized with a request whose tag is -1.
In this case it is not right for eh_device_reset_handler() callback to
count on the LUN get from hba->lrb[-1]. Fix it by getting LUN from the SCSI
device associated with the SCSI cmd.

Link: https://lore.kernel.org/r/1609157080-26283-1-git-send-email-cang@codeaurora.org
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Can Guo <cang@codeaurora.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/scsi/ufs/ufshcd.c | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index b888117f4ecd3..476ef8044ae59 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -5980,19 +5980,16 @@ static int ufshcd_eh_device_reset_handler(struct scsi_cmnd *cmd)
 {
 	struct Scsi_Host *host;
 	struct ufs_hba *hba;
-	unsigned int tag;
 	u32 pos;
 	int err;
-	u8 resp = 0xF;
-	struct ufshcd_lrb *lrbp;
+	u8 resp = 0xF, lun;
 	unsigned long flags;
 
 	host = cmd->device->host;
 	hba = shost_priv(host);
-	tag = cmd->request->tag;
 
-	lrbp = &hba->lrb[tag];
-	err = ufshcd_issue_tm_cmd(hba, lrbp->lun, 0, UFS_LOGICAL_RESET, &resp);
+	lun = ufshcd_scsi_to_upiu_lun(cmd->device->lun);
+	err = ufshcd_issue_tm_cmd(hba, lun, 0, UFS_LOGICAL_RESET, &resp);
 	if (err || resp != UPIU_TASK_MANAGEMENT_FUNC_COMPL) {
 		if (!err)
 			err = resp;
@@ -6001,7 +5998,7 @@ static int ufshcd_eh_device_reset_handler(struct scsi_cmnd *cmd)
 
 	/* clear the commands that were pending for corresponding LUN */
 	for_each_set_bit(pos, &hba->outstanding_reqs, hba->nutrs) {
-		if (hba->lrb[pos].lun == lrbp->lun) {
+		if (hba->lrb[pos].lun == lun) {
 			err = ufshcd_clear_cmd(hba, pos);
 			if (err)
 				break;
-- 
2.27.0


  parent reply	other threads:[~2021-01-20  1:34 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-20  1:26 [PATCH AUTOSEL 5.4 01/26] ASoC: Intel: haswell: Add missing pm_ops Sasha Levin
2021-01-20  1:26 ` [PATCH AUTOSEL 5.4 02/26] HID: multitouch: Enable multi-input for Synaptics pointstick/touchpad device Sasha Levin
2021-01-20  1:26 ` [PATCH AUTOSEL 5.4 03/26] dm integrity: select CRYPTO_SKCIPHER Sasha Levin
2021-01-20  5:47   ` [dm-devel] " Eric Biggers
2021-02-05  0:28     ` Sasha Levin
2021-01-20  1:26 ` Sasha Levin [this message]
2021-01-20  1:26 ` [PATCH AUTOSEL 5.4 05/26] scsi: qedi: Correct max length of CHAP secret Sasha Levin
2021-01-20  1:26 ` [PATCH AUTOSEL 5.4 06/26] scsi: sd: Suppress spurious errors when WRITE SAME is being disabled Sasha Levin
2021-01-20  1:26 ` [PATCH AUTOSEL 5.4 07/26] riscv: Fix kernel time_init() Sasha Levin
2021-01-20  1:26 ` [PATCH AUTOSEL 5.4 08/26] riscv: Fix sifive serial driver Sasha Levin
2021-01-20  1:26 ` [PATCH AUTOSEL 5.4 09/26] HID: logitech-dj: add the G602 receiver Sasha Levin
2021-01-20  1:26 ` [PATCH AUTOSEL 5.4 10/26] HID: Ignore battery for Elan touchscreen on ASUS UX550 Sasha Levin
2021-01-20  1:26 ` [PATCH AUTOSEL 5.4 11/26] clk: tegra30: Add hda clock default rates to clock driver Sasha Levin
2021-01-20  1:26 ` [PATCH AUTOSEL 5.4 12/26] r8152: Add Lenovo Powered USB-C Travel Hub Sasha Levin
2021-01-20  1:26 ` [PATCH AUTOSEL 5.4 13/26] arm64: make atomic helpers __always_inline Sasha Levin
2021-01-20  1:26 ` [PATCH AUTOSEL 5.4 14/26] xen: Fix event channel callback via INTX/GSI Sasha Levin
2021-01-20  1:26 ` [PATCH AUTOSEL 5.4 15/26] x86/xen: Add xen_no_vector_callback option to test PCI INTX delivery Sasha Levin
2021-01-20  1:26 ` [PATCH AUTOSEL 5.4 16/26] net: stmmac: Fixed mtu channged by cache aligned Sasha Levin
2021-01-20  1:26 ` [PATCH AUTOSEL 5.4 17/26] dts: phy: fix missing mdio device and probe failure of vsc8541-01 device Sasha Levin
2021-01-20  1:26 ` [PATCH AUTOSEL 5.4 18/26] dts: phy: add GPIO number and active state used for phy reset Sasha Levin
2021-01-20  1:26 ` [PATCH AUTOSEL 5.4 19/26] riscv: defconfig: enable gpio support for HiFive Unleashed Sasha Levin
2021-01-20  1:26 ` [PATCH AUTOSEL 5.4 20/26] drm/amdgpu/psp: fix psp gfx ctrl cmds Sasha Levin
2021-01-20  1:26 ` [PATCH AUTOSEL 5.4 21/26] drm/amd/display: Fix to be able to stop crc calculation Sasha Levin
2021-01-20  1:26 ` [PATCH AUTOSEL 5.4 22/26] drm/nouveau/bios: fix issue shadowing expansion ROMs Sasha Levin
2021-01-20  1:27 ` [PATCH AUTOSEL 5.4 23/26] drm/nouveau/privring: ack interrupts the same way as RM Sasha Levin
2021-01-20  1:27 ` [PATCH AUTOSEL 5.4 24/26] drm/nouveau/i2c/gm200: increase width of aux semaphore owner fields Sasha Levin
2021-01-20  1:27 ` [PATCH AUTOSEL 5.4 25/26] drm/nouveau/mmu: fix vram heap sizing Sasha Levin
2021-01-20  1:27 ` [PATCH AUTOSEL 5.4 26/26] drm/nouveau/kms/nv50-: fix case where notifier buffer is at offset 0 Sasha Levin

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