scsi: lpfc: Fix queue failures when recovering from PCI parity error
authorJames Smart <jsmart2021@gmail.com>
Thu, 17 Mar 2022 03:27:36 +0000 (20:27 -0700)
committerMartin K. Petersen <martin.petersen@oracle.com>
Wed, 30 Mar 2022 03:19:38 +0000 (23:19 -0400)
commitdf0101197c4d9596682901631f3ee193ed354873
treeaedd3ae5657a273db54cbb932b188026043e2f7c
parenta4691038b4071ff0d9ae486d8822a2c0d41d5796
scsi: lpfc: Fix queue failures when recovering from PCI parity error

When recovering from a pci-parity error the driver is failing to re-create
queues, causing recovery to fail. Looking deeper, it was found that the
interrupt vector count allocated on the recovery was fewer than the vectors
originally allocated. This disparity resulted in CPU map entries with stale
information. When the driver tries to re-create the queues, it attempts to
use the stale information which indicates an eq/interrupt vector that was
no longer created.

Fix by clearng the cpup map array before enabling and requesting the IRQs
in the lpfc_sli_reset_slot_s4 routine().

Link: https://lore.kernel.org/r/20220317032737.45308-4-jsmart2021@gmail.com
Co-developed-by: Justin Tee <justin.tee@broadcom.com>
Signed-off-by: Justin Tee <justin.tee@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
drivers/scsi/lpfc/lpfc_init.c