linux-kernel - [PATCH 4.9 156/177] scsi: hpsa: cleanup sas_phy structures in sysfs when unloading

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Message-Id: <20171218152918.097822106@linuxfoundation.org>
Date:   Mon, 18 Dec 2017 16:49:39 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Don Brace <don.brace@...rosemi.com>,
        Martin Wilck <mwilck@...e.de>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Sasha Levin <alexander.levin@...izon.com>
Subject: [PATCH 4.9 156/177] scsi: hpsa: cleanup sas_phy structures in sysfs when unloading

4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Martin Wilck <mwilck@...e.de>


[ Upstream commit 55ca38b4255bb336c2d35990bdb2b368e19b435a ]

I am resubmitting this patch on behalf of Martin Wilck with his
permission.

The original patch can be found here:
https://www.spinics.net/lists/linux-scsi/msg102083.html

This patch did not help until Hannes's
commit 9441284fbc39 ("scsi-fixup-kernel-warning-during-rmmod")
was applied to the kernel.

--------------------------------------
Original patch description from Martin:
--------------------------------------

When the hpsa module is unloaded using rmmod, dangling
symlinks remain under /sys/class/sas_phy. Fix this by
calling sas_phy_delete() rather than sas_phy_free (which,
according to comments, should not be called for PHYs that
have been set up successfully, anyway).

Tested-by: Don Brace <don.brace@...rosemi.com>
Reviewed-by: Don Brace <don.brace@...rosemi.com>
Signed-off-by: Martin Wilck <mwilck@...e.de>
Signed-off-by: Don Brace <don.brace@...rosemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@...cle.com>
Signed-off-by: Sasha Levin <alexander.levin@...izon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/scsi/hpsa.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -9632,9 +9632,9 @@ static void hpsa_free_sas_phy(struct hps
 	struct sas_phy *phy = hpsa_sas_phy->phy;
 
 	sas_port_delete_phy(hpsa_sas_phy->parent_port->port, phy);
-	sas_phy_free(phy);
 	if (hpsa_sas_phy->added_to_port)
 		list_del(&hpsa_sas_phy->phy_list_entry);
+	sas_phy_delete(phy);
 	kfree(hpsa_sas_phy);
 }