Re: [PATCH 4/7] scsi: ufs: core: Fix ufshcd_exception_event_handler()

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On 10/18/24 10:25 AM, Avri Altman wrote:
No. But the Fixes tag seems strange, isn't it?

How about replacing the entire patch with the patch below?

Thanks,

Bart.


scsi: ufs: core: Simplify ufshcd_exception_event_handler()

The ufshcd_scsi_block_requests() and ufshcd_scsi_unblock_requests()
calls were introduced in ufshcd_exception_event_handler() to prevent
that querying the exception event information would time out. Commit
10fe5888a40e ("scsi: ufs: increase the scsi query response timeout")
increased the timeout for querying exception information from 30 ms to
1.5 s and thereby eliminated the risk that a timeout would happen.
Hence, the calls to block and unblock SCSI requests are superfluous.
Remove these calls.

diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c
index 76884df580c3..2fde1b0a6086 100644
--- a/drivers/ufs/core/ufshcd.c
+++ b/drivers/ufs/core/ufshcd.c
@@ -6195,12 +6195,11 @@ static void ufshcd_exception_event_handler(struct work_struct *work)
 	u32 status = 0;
 	hba = container_of(work, struct ufs_hba, eeh_work);

-	ufshcd_scsi_block_requests(hba);
 	err = ufshcd_get_ee_status(hba, &status);
 	if (err) {
 		dev_err(hba->dev, "%s: failed to get exception status %d\n",
 				__func__, err);
-		goto out;
+		return;
 	}

 	trace_ufshcd_exception_event(dev_name(hba->dev), status);
@@ -6212,8 +6211,6 @@ static void ufshcd_exception_event_handler(struct work_struct *work)
 		ufshcd_temp_exception_event_handler(hba, status);

 	ufs_debugfs_exception_event(hba, status);
-out:
-	ufshcd_scsi_unblock_requests(hba);
 }

 /* Complete requests that have door-bell cleared */





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