[PATCH 4.19 112/149] Revert "scsi: libfc: Add WARN_ON() when deleting rports"
From: Greg Kroah-Hartman
Date: Tue Mar 12 2019 - 13:48:36 EST
4.19-stable review patch. If anyone has any objections, please let me know.
[ Upstream commit d8f6382a7d026989029e2e50c515df954488459b ]
This reverts commit bbc0f8bd88abefb0f27998f40a073634a3a2db89.
It added a warning whose intent was to check whether the rport was still
linked into the peer list. It doesn't work as intended and gives false
positive warnings for two reasons:
1) If the rport is never linked into the peer list it will not be
considered empty since the list_head is never initialized.
2) If the rport is deleted from the peer list using list_del_rcu(), then
the list_head is in an undefined state and it is not considered empty.
Signed-off-by: Ross Lagerwall <ross.lagerwall@xxxxxxxxxx>
Reviewed-by: Hannes Reinecke <hare@xxxxxxxx>
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
drivers/scsi/libfc/fc_rport.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/scsi/libfc/fc_rport.c b/drivers/scsi/libfc/fc_rport.c
index 372387a450df..1797e47fab38 100644
@@ -184,7 +184,6 @@ void fc_rport_destroy(struct kref *kref)
struct fc_rport_priv *rdata;
rdata = container_of(kref, struct fc_rport_priv, kref);