scsi: hisi_sas: Fix some issues related to asd_sas_port->phy_list

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Most places that use asd_sas_port->phy_list are protected by spinlock
asd_sas_port->phy_list_lock, however there are still some places which miss
grabbing the lock. Add it in function hisi_sas_refresh_port_id() when
accessing asd_sas_port->phy_list. This carries a risk that list mutates
while at the same time dropping the lock in function
hisi_sas_send_ata_reset_each_phy(). Read asd_sas_port->phy_mask instead of
accessing asd_sas_port->phy_list to avoid this risk.

Link: https://lore.kernel.org/r/1639999298-244569-6-git-send-email-chenxiang66@hisilicon.com
Acked-by: John Garry <john.garry@huawei.com>
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

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Xiang Chen 2021-12-20 19:21:28 +08:00 • committed by Martin K. Petersen

parent 42159d3c8d

commit 29e2bac874

1 changed files with 8 additions and 3 deletions

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drivers/scsi/hisi_sas/hisi_sas_main.c

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