[RFC PATCH v2] scsi: ufs: set STATE_ERROR when ufshcd_probe_hba() failed

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set STATE_ERR like below to prevent a lockup(IO stuck)
when ufshcd_probe_hba() returns error.

Change-Id: I6c85ff290503cc9414d7f5fdd934295497b854ff
Signed-off-by: Lee Sang Hyun <sh425.lee@xxxxxxxxxxx>
---
 drivers/scsi/ufs/ufshcd.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index ad4fc82..37e4105 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -7368,6 +7368,7 @@ static int ufshcd_probe_hba(struct ufs_hba *hba, bool async)
 {
 	int ret;
 	ktime_t start = ktime_get();
+	unsigned long flags;
 
 	ret = ufshcd_link_startup(hba);
 	if (ret)
@@ -7439,6 +7440,11 @@ static int ufshcd_probe_hba(struct ufs_hba *hba, bool async)
 	ufshcd_auto_hibern8_enable(hba);
 
 out:
+	if (ret) {
+		spin_lock_irqsave(hba->host->host_lock, flags);
+		hba->ufshcd_state = UFSHCD_STATE_ERROR;
+		spin_unlock_irqrestore(hba->host->host_lock, flags);
+	}
 
 	trace_ufshcd_init(dev_name(hba->dev), ret,
 		ktime_to_us(ktime_sub(ktime_get(), start)),
-- 
2.7.4




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