linux-kernel - [PATCH] Revert "scsi: libsas: Fix exp-attached device scan after probe failure scanned in again after probe failed"

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Message-ID: <20251021073438.3441934-1-yangxingui@huawei.com>
Date: Tue, 21 Oct 2025 15:34:38 +0800
From: Xingui Yang <yangxingui@...wei.com>
To: <john.g.garry@...cle.com>, <yanaijie@...wei.com>, <jejb@...ux.ibm.com>,
	<martin.petersen@...cle.com>
CC: <linux-scsi@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linuxarm@...wei.com>, <liyihang9@...artners.com>, <yangxingui@...wei.com>,
	<liuyonglong@...wei.com>, <kangfenglong@...wei.com>
Subject: [PATCH] Revert "scsi: libsas: Fix exp-attached device scan after probe failure scanned in again after probe failed"

This reverts commit ab2068a6fb84751836a84c26ca72b3beb349619d.

As the disk may fall into an abnormal loop of probe when it fails to probe
due to physical reasons and cannot be repaired.

Signed-off-by: Xingui Yang <yangxingui@...wei.com>
---
 drivers/scsi/libsas/sas_internal.h | 14 --------------
 1 file changed, 14 deletions(-)

diff --git a/drivers/scsi/libsas/sas_internal.h b/drivers/scsi/libsas/sas_internal.h
index 03d6ec1eb970..85948963fb97 100644
--- a/drivers/scsi/libsas/sas_internal.h
+++ b/drivers/scsi/libsas/sas_internal.h
@@ -145,20 +145,6 @@ static inline void sas_fail_probe(struct domain_device *dev, const char *func, i
 		func, dev->parent ? "exp-attached" :
 		"direct-attached",
 		SAS_ADDR(dev->sas_addr), err);
-
-	/*
-	 * If the device probe failed, the expander phy attached address
-	 * needs to be reset so that the phy will not be treated as flutter
-	 * in the next revalidation
-	 */
-	if (dev->parent && !dev_is_expander(dev->dev_type)) {
-		struct sas_phy *phy = dev->phy;
-		struct domain_device *parent = dev->parent;
-		struct ex_phy *ex_phy = &parent->ex_dev.ex_phy[phy->number];
-
-		memset(ex_phy->attached_sas_addr, 0, SAS_ADDR_SIZE);
-	}
-
 	sas_unregister_dev(dev->port, dev);
 }
 
-- 
2.33.0