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Subject[PATCH] scsi: ufs: Check for bkops in runtime suspend
Date
The UFS driver allowed BKOPS and WB Flush operations to be completed on
Runtime suspend. Adding the DeepSleep support, this is no longer true:
the driver will ignore BKOPS and WB Flush states, and force a link state
transition to UIC_LINK_OFF_STATE.

Do not ignore BKOPS and WB Flush on runtme suspend flow.

fixes: fe1d4c2ebcae (scsi: ufs: Add DeepSleep feature)

Suggested-by: Alex Lemberg <alex.lemberg@wdc.com>
Signed-off-by: Avri Altman <avri.altman@wdc.com>
---
drivers/scsi/ufs/ufshcd.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 58d7f264c664..1a0cac670aba 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -8755,7 +8755,8 @@ static int ufshcd_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op)
* In the case of DeepSleep, the device is expected to remain powered
* with the link off, so do not check for bkops.
*/
- check_for_bkops = !ufshcd_is_ufs_dev_deepsleep(hba);
+ check_for_bkops = !ufshcd_is_ufs_dev_deepsleep(hba) ||
+ hba->dev_info.b_rpm_dev_flush_capable;
ret = ufshcd_link_state_transition(hba, req_link_state, check_for_bkops);
if (ret)
goto set_dev_active;
--
2.25.1
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