@@ -4964,6 +4964,7 @@ ufshcd_transfer_rsp_status(struct ufs_hba *hba, struct ufshcd_lrb *lrbp)
* UFS device needs urgent BKOPs.
*/
if (!hba->pm_op_in_progress &&
+ !ufshcd_eh_in_progress(hba) &&
ufshcd_is_exception_event(lrbp->ucd_rsp_ptr) &&
schedule_work(&hba->eeh_work)) {
/*
@@ -5765,10 +5766,16 @@ static void ufshcd_err_handling_prepare(struct ufs_hba *hba)
ufshcd_suspend_clkscaling(hba);
}
}
+ ufshcd_scsi_block_requests(hba);
+ /* Clean up ufshcd_queuecommand path */
+ down_write(&hba->clk_scaling_lock);
+ up_write(&hba->clk_scaling_lock);
+ cancel_work_sync(&hba->eeh_work);
}
static void ufshcd_err_handling_unprepare(struct ufs_hba *hba)
{
+ ufshcd_scsi_unblock_requests(hba);
ufshcd_release(hba);
if (hba->clk_scaling.is_allowed)
ufshcd_resume_clkscaling(hba);
@@ -5862,8 +5869,8 @@ static void ufshcd_err_handler(struct work_struct *work)
spin_unlock_irqrestore(hba->host->host_lock, flags);
ufshcd_err_handling_prepare(hba);
spin_lock_irqsave(hba->host->host_lock, flags);
- ufshcd_scsi_block_requests(hba);
- hba->ufshcd_state = UFSHCD_STATE_RESET;
+ if (hba->ufshcd_state != UFSHCD_STATE_ERROR)
+ hba->ufshcd_state = UFSHCD_STATE_RESET;
/* Complete requests that have door-bell cleared by h/w */
ufshcd_complete_requests(hba);
@@ -6022,7 +6029,6 @@ static void ufshcd_err_handler(struct work_struct *work)
}
ufshcd_clear_eh_in_progress(hba);
spin_unlock_irqrestore(hba->host->host_lock, flags);
- ufshcd_scsi_unblock_requests(hba);
ufshcd_err_handling_unprepare(hba);
up(&hba->eh_sem);
}
@@ -7836,6 +7842,8 @@ static int ufshcd_probe_hba(struct ufs_hba *hba, bool async)
unsigned long flags;
ktime_t start = ktime_get();
+ hba->ufshcd_state = UFSHCD_STATE_RESET;
+
ret = ufshcd_link_startup(hba);
if (ret)
goto out;
In error handling prepare stage, after SCSI requests are blocked, do a down/up_write(clk_scaling_lock) to clean up the queuecommand() path. Meanwhile, stop eeh_work in case it disturbs error recovery. Moreover, reset ufshcd_state at the entrance of ufshcd_probe_hba(), since it may be called multiple times during error recovery. Signed-off-by: Can Guo <cang@codeaurora.org>