6.12-stable review patch. If anyone has any objections, please let me know.
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From: Yihang Li liyihang9@huawei.com
[ Upstream commit 08a07dc71d7fc6f58c35c4fc0bcede2811c5aa4c ]
For the controller reset operation(such as FLR or clear nexus ha in SCSI EH), we will disable all PHYs and then enable PHY based on the hisi_hba->phy_state obtained in hisi_sas_controller_reset_prepare(). If the device is removed before controller reset or the PHY is not attached to any device in directly attached scenario, the corresponding bit of phy_state is not set. After controller reset done, the PHY is disabled. The device cannot be identified even if user reconnect the disk.
Therefore, for PHYs that are not disabled by user, hisi_sas_phy_enable() needs to be executed even if the corresponding bit of phy_state is not set.
Fixes: 89954f024c3a ("scsi: hisi_sas: Ensure all enabled PHYs up during controller reset") Signed-off-by: Yihang Li liyihang9@huawei.com Link: https://lore.kernel.org/r/20241008021822.2617339-5-liyihang9@huawei.com Reviewed-by: Xiang Chen chenxiang66@hisilicon.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/scsi/hisi_sas/hisi_sas_main.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c index 6219807ce3b9e..ffd15fa4f9e59 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_main.c +++ b/drivers/scsi/hisi_sas/hisi_sas_main.c @@ -1545,10 +1545,16 @@ void hisi_sas_controller_reset_done(struct hisi_hba *hisi_hba) /* Init and wait for PHYs to come up and all libsas event finished. */ for (phy_no = 0; phy_no < hisi_hba->n_phy; phy_no++) { struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no]; + struct asd_sas_phy *sas_phy = &phy->sas_phy;
- if (!(hisi_hba->phy_state & BIT(phy_no))) + if (!sas_phy->phy->enabled) continue;
+ if (!(hisi_hba->phy_state & BIT(phy_no))) { + hisi_sas_phy_enable(hisi_hba, phy_no, 1); + continue; + } + async_schedule_domain(hisi_sas_async_init_wait_phyup, phy, &async); }