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scsi: lpfc: Fix RQ empty firmware trap
authorJames Smart <jsmart2021@gmail.com>
Tue, 30 Jan 2018 23:58:52 +0000 (15:58 -0800)
committerMartin K. Petersen <martin.petersen@oracle.com>
Mon, 12 Feb 2018 16:43:23 +0000 (11:43 -0500)
commit411de511c6943554cdc4173c3f522029db2f75c7
tree442bcc5c77a747c83be8eaa211ef2018edaed545
parent91455b850956bc13708a074bd1400f54aae74890
scsi: lpfc: Fix RQ empty firmware trap

When nvme target deferred receive logic waits for exchange resources,
the corresponding receive buffer is not replenished with the hardware.
This can result in a lack of asynchronous receive buffer resources in
the hardware, resulting in a "2885 Port Status Event: ... error
1=0x52004a01 ..." message.

Correct by replenishing the buffer whenenver the deferred logic kicks
in.  Update corresponding debug messages and statistics as well.

[mkp: applied by hand]

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
drivers/scsi/lpfc/lpfc_attr.c
drivers/scsi/lpfc/lpfc_mem.c
drivers/scsi/lpfc/lpfc_nvmet.c
drivers/scsi/lpfc/lpfc_nvmet.h
drivers/scsi/lpfc/lpfc_sli.c