From c2bae4f7d721e06e6bb8d1174ec7f8ff7604892c Mon Sep 17 00:00:00 2001 From: Luo Jiaxing Date: Fri, 6 Sep 2019 20:55:27 +0800 Subject: [PATCH] scsi: hisi_sas: Directly return when running I_T_nexus reset if phy disabled At hisi_sas_debug_I_T_nexus_reset(), we call sas_phy_reset() to reset a phy. But if the phy is disabled, sas_phy_reset() will directly return -ENODEV without issue a phy reset request. If so, We can directly return -ENODEV to libsas before issue a phy reset. Link: https://lore.kernel.org/r/1567774537-20003-4-git-send-email-john.garry@huawei.com Signed-off-by: Luo Jiaxing Signed-off-by: John Garry Signed-off-by: Martin K. Petersen --- drivers/scsi/hisi_sas/hisi_sas_main.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c index 59c11f4..ffe02f9 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_main.c +++ b/drivers/scsi/hisi_sas/hisi_sas_main.c @@ -1752,6 +1752,11 @@ static int hisi_sas_debug_I_T_nexus_reset(struct domain_device *device) DECLARE_COMPLETION_ONSTACK(phyreset); int rc, reset_type; + if (!local_phy->enabled) { + sas_put_local_phy(local_phy); + return -ENODEV; + } + if (scsi_is_sas_phy_local(local_phy)) { struct asd_sas_phy *sas_phy = sas_ha->sas_phy[local_phy->number]; -- 2.7.4