From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Bean Huo <beanhuo@micron.com>,
Stanley Chu <stanley.chu@mediatek.com>,
"Martin K. Petersen" <martin.petersen@oracle.com>,
Sasha Levin <sashal@kernel.org>
Subject: [PATCH 5.10 12/20] scsi: ufs: Re-enable WriteBooster after device reset
Date: Thu, 7 Jan 2021 15:34:07 +0100 [thread overview]
Message-ID: <20210107143054.098061192@linuxfoundation.org> (raw)
In-Reply-To: <20210107143052.392839477@linuxfoundation.org>
From: Stanley Chu <stanley.chu@mediatek.com>
[ Upstream commit bd14bf0e4a084514aa62d24d2109e0f09a93822f ]
UFS 3.1 specification mentions that the WriteBooster flags listed below
will be set to their default values, i.e. disabled, after power cycle or
any type of reset event. Thus we need to reset the flag variables kept in
struct hba to align with the device status and ensure that
WriteBooster-related functions are configured properly after device reset.
Without this fix, WriteBooster will not be enabled successfully after by
ufshcd_wb_ctrl() after device reset because hba->wb_enabled remains true.
Flags required to be reset to default values:
- fWriteBoosterEn: hba->wb_enabled
- fWriteBoosterBufferFlushEn: hba->wb_buf_flush_enabled
- fWriteBoosterBufferFlushDuringHibernate: No variable mapped
Link: https://lore.kernel.org/r/20201208135635.15326-2-stanley.chu@mediatek.com
Fixes: 3d17b9b5ab11 ("scsi: ufs: Add write booster feature support")
Reviewed-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/scsi/ufs/ufshcd.h | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index de97971e2d865..cd51553e522da 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -1183,8 +1183,13 @@ static inline void ufshcd_vops_device_reset(struct ufs_hba *hba)
if (hba->vops && hba->vops->device_reset) {
int err = hba->vops->device_reset(hba);
- if (!err)
+ if (!err) {
ufshcd_set_ufs_dev_active(hba);
+ if (ufshcd_is_wb_allowed(hba)) {
+ hba->wb_enabled = false;
+ hba->wb_buf_flush_enabled = false;
+ }
+ }
if (err != -EOPNOTSUPP)
ufshcd_update_reg_hist(&hba->ufs_stats.dev_reset, err);
}
--
2.27.0
next prev parent reply other threads:[~2021-01-07 14:36 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-07 14:33 [PATCH 5.10 00/20] 5.10.6-rc1 review Greg Kroah-Hartman
2021-01-07 14:33 ` [PATCH 5.10 01/20] Revert "drm/amd/display: Fix memory leaks in S3 resume" Greg Kroah-Hartman
2021-01-07 14:33 ` [PATCH 5.10 02/20] Revert "mtd: spinand: Fix OOB read" Greg Kroah-Hartman
2021-01-07 14:33 ` [PATCH 5.10 03/20] rtc: pcf2127: move watchdog initialisation to a separate function Greg Kroah-Hartman
2021-01-07 14:33 ` [PATCH 5.10 04/20] rtc: pcf2127: only use watchdog when explicitly available Greg Kroah-Hartman
2021-01-07 14:34 ` [PATCH 5.10 05/20] dt-bindings: rtc: add reset-source property Greg Kroah-Hartman
2021-01-07 14:34 ` [PATCH 5.10 06/20] kdev_t: always inline major/minor helper functions Greg Kroah-Hartman
2021-01-07 14:34 ` [PATCH 5.10 07/20] Bluetooth: Fix attempting to set RPA timeout when unsupported Greg Kroah-Hartman
2021-01-07 14:34 ` [PATCH 5.10 08/20] ALSA: hda/realtek - Modify Dell platform name Greg Kroah-Hartman
2021-01-07 14:34 ` [PATCH 5.10 09/20] ALSA: hda/hdmi: Fix incorrect mutex unlock in silent_stream_disable() Greg Kroah-Hartman
2021-01-07 14:34 ` [PATCH 5.10 10/20] drm/i915/tgl: Fix Combo PHY DPLL fractional divider for 38.4MHz ref clock Greg Kroah-Hartman
2021-01-07 14:34 ` [PATCH 5.10 11/20] scsi: ufs: Allow an error return value from ->device_reset() Greg Kroah-Hartman
2021-01-07 14:34 ` Greg Kroah-Hartman [this message]
2021-01-07 14:34 ` [PATCH 5.10 13/20] RDMA/core: remove use of dma_virt_ops Greg Kroah-Hartman
2021-01-07 14:34 ` [PATCH 5.10 14/20] RDMA/siw,rxe: Make emulated devices virtual in the device tree Greg Kroah-Hartman
2021-01-07 14:34 ` [PATCH 5.10 15/20] fuse: fix bad inode Greg Kroah-Hartman
2021-01-07 14:34 ` [PATCH 5.10 16/20] perf: Break deadlock involving exec_update_mutex Greg Kroah-Hartman
2021-01-07 14:34 ` [PATCH 5.10 17/20] rwsem: Implement down_read_killable_nested Greg Kroah-Hartman
2021-01-07 14:34 ` [PATCH 5.10 18/20] rwsem: Implement down_read_interruptible Greg Kroah-Hartman
2021-01-07 14:34 ` [PATCH 5.10 19/20] exec: Transform exec_update_mutex into a rw_semaphore Greg Kroah-Hartman
2021-01-07 14:34 ` [PATCH 5.10 20/20] mwifiex: Fix possible buffer overflows in mwifiex_cmd_802_11_ad_hoc_start Greg Kroah-Hartman
2021-01-08 1:10 ` [PATCH 5.10 00/20] 5.10.6-rc1 review Shuah Khan
2021-01-10 11:30 ` Greg Kroah-Hartman
2021-01-08 2:02 ` Naresh Kamboju
2021-01-10 11:30 ` Greg Kroah-Hartman
2021-01-08 17:41 ` Guenter Roeck
2021-01-10 11:31 ` Greg Kroah-Hartman
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