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Date: Mon, 15 Aug 2022 20:01:04 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Himanshu Madhani <himanshu.madhani@...cle.com>, Quinn Tran <qutran@...vell.com>, Nilesh Javali <njavali@...vell.com>, "Martin K. Petersen" <martin.petersen@...cle.com>, Sasha Levin <sashal@...nel.org> Subject: [PATCH 5.15 420/779] scsi: qla2xxx: edif: Reduce disruption due to multiple app start From: Quinn Tran <qutran@...vell.com> [ Upstream commit 0dbfce5255fe8d069a1a3b712a25b263264cfa58 ] Multiple app start can trigger a session bounce. Make driver skip over session teardown if app start is seen more than once. Link: https://lore.kernel.org/r/20220608115849.16693-4-njavali@marvell.com Fixes: 7ebb336e45ef ("scsi: qla2xxx: edif: Add start + stop bsgs") Reviewed-by: Himanshu Madhani <himanshu.madhani@...cle.com> Signed-off-by: Quinn Tran <qutran@...vell.com> Signed-off-by: Nilesh Javali <njavali@...vell.com> Signed-off-by: Martin K. Petersen <martin.petersen@...cle.com> Signed-off-by: Sasha Levin <sashal@...nel.org> --- drivers/scsi/qla2xxx/qla_edif.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/qla2xxx/qla_edif.c b/drivers/scsi/qla2xxx/qla_edif.c index 69f8d16effa6..f7953ce17678 100644 --- a/drivers/scsi/qla2xxx/qla_edif.c +++ b/drivers/scsi/qla2xxx/qla_edif.c @@ -486,8 +486,7 @@ qla_edif_app_start(scsi_qla_host_t *vha, struct bsg_job *bsg_job) /* mark doorbell as active since an app is now present */ vha->e_dbell.db_flags |= EDB_ACTIVE; } else { - ql_dbg(ql_dbg_edif, vha, 0x911e, "%s doorbell already active\n", - __func__); + goto out; } if (N2N_TOPO(vha->hw)) { @@ -555,6 +554,7 @@ qla_edif_app_start(scsi_qla_host_t *vha, struct bsg_job *bsg_job) __func__); } +out: appreply.host_support_edif = vha->hw->flags.edif_enabled; appreply.edif_enode_active = vha->pur_cinfo.enode_flags; appreply.edif_edb_active = vha->e_dbell.db_flags; -- 2.35.1
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