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scsi: ufs: Don't update urgent bkops level when toggling auto bkops 

[ Upstream commit be32acff43 ]

Urgent bkops level is used to compare against actual bkops status read from
UFS device. Urgent bkops level is set during initialization and might be
updated in exception event handler during runtime. But it should not be
updated to the actual bkops status every time when auto bkops is toggled.
Otherwise, if urgent bkops level is updated to 0, auto bkops shall always
be kept enabled.

Link: https://lore.kernel.org/r/1590632686-17866-1-git-send-email-cang@codeaurora.org
Fixes: 24366c2afb ("scsi: ufs: Recheck bkops level if bkops is disabled")
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>
5.4-rM2-2.2.x-imx-squashed
Can Guo 2020-05-27 19:24:42 -07:00 committed by Greg Kroah-Hartman
parent 88d6783484
commit bd410e6600
1 changed files with 0 additions and 1 deletions
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drivers/scsi/ufs/ufshcd.c
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@ -5101,7 +5101,6 @@ static int ufshcd_bkops_ctrl(struct ufs_hba *hba,
err = ufshcd_enable_auto_bkops(hba);
else
err = ufshcd_disable_auto_bkops(hba);
hba->urgent_bkops_lvl = curr_status;
out:
return err;
}