This is a note to let you know that I've just added the patch titled
scsi: hisi_sas: Set .phy_attached before notifing phyup event HISI_PHYE_PHY_UP_PM
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
scsi-hisi_sas-set-.phy_attached-before-notifing-phyu.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 9fa5dfcb8b97190ffdd41d237accb0b53a170783
Author: Yihang Li <liyihang9@xxxxxxxxxx>
Date: Thu Dec 14 11:45:12 2023 +0800
scsi: hisi_sas: Set .phy_attached before notifing phyup event HISI_PHYE_PHY_UP_PM
[ Upstream commit ce26497c745d0541aec930d5211b431a1c26af97 ]
Currently in directly attached scenario, the phyup event
HISI_PHYE_PHY_UP_PM is notified before .phy_attached is set - this may
cause the phyup work hisi_sas_bytes_dmaed() execution failed and the
attached device will not be found.
To fix it, set .phy_attached before notifing phyup event.
Signed-off-by: Yihang Li <liyihang9@xxxxxxxxxx>
Signed-off-by: Xiang Chen <chenxiang66@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/1702525516-51258-2-git-send-email-chenxiang66@xxxxxxxxxxxxx
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
index 520fffc14282..e914c0c13bb5 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
@@ -1606,6 +1606,11 @@ static irqreturn_t phy_up_v3_hw(int phy_no, struct hisi_hba *hisi_hba)
}
phy->port_id = port_id;
+ spin_lock(&phy->lock);
+ /* Delete timer and set phy_attached atomically */
+ del_timer(&phy->timer);
+ phy->phy_attached = 1;
+ spin_unlock(&phy->lock);
/*
* Call pm_runtime_get_noresume() which pairs with
@@ -1619,11 +1624,6 @@ static irqreturn_t phy_up_v3_hw(int phy_no, struct hisi_hba *hisi_hba)
res = IRQ_HANDLED;
- spin_lock(&phy->lock);
- /* Delete timer and set phy_attached atomically */
- del_timer(&phy->timer);
- phy->phy_attached = 1;
- spin_unlock(&phy->lock);
end:
if (phy->reset_completion)
complete(phy->reset_completion);
