diff options
| author | James Smart <jsmart2021@gmail.com> | 2018-11-30 03:09:39 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2018-12-08 06:35:33 +0300 |
| commit | 1165a5c2206cf8e4811caab145d16a8d87c69111 (patch) | |
| tree | 0c28d57e34a1a1bd88edfd1252671b369305966e /drivers/scsi/lpfc/lpfc_crtn.h | |
| parent | 76558b25733140a0c6bd53ea8af04b2811c92ec3 (diff) | |
| download | linux-1165a5c2206cf8e4811caab145d16a8d87c69111.tar.xz | |
scsi: lpfc: Fix driver release of fw-logging buffers
On driver termination, after the driver stops fw logging by writing a
register on the chip, the driver immediately unmaps and frees the logging
buffer, without confirming in any way that the chip has received the write
and terminated the logging. As termination on the chip is not immediate,
the chip may issue a dma request to the now unmapped dma buffer, resulting
in a iommu fault.
Change the driver to receive a confirmation that logging ahs been
terminated. As the driver always issues an SLI reset with the device as
part of shutdown, and as part of that is receiving confirmation that the
reset is complete - the driver was modified to perform the write to disable
fw logging prior to the SLI reset and only free the fw log buffer after the
SLI reset is complete. That guarantees use of the fw log buffer is fully
terminated when it is unmapped.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_crtn.h')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_crtn.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/scsi/lpfc/lpfc_crtn.h b/drivers/scsi/lpfc/lpfc_crtn.h index 5edea80fd7f1..6a8c5b804c2d 100644 --- a/drivers/scsi/lpfc/lpfc_crtn.h +++ b/drivers/scsi/lpfc/lpfc_crtn.h @@ -551,6 +551,7 @@ void lpfc_sli4_ras_init(struct lpfc_hba *phba); void lpfc_sli4_ras_setup(struct lpfc_hba *phba); int lpfc_sli4_ras_fwlog_init(struct lpfc_hba *phba, uint32_t fwlog_level, uint32_t fwlog_enable); +void lpfc_ras_stop_fwlog(struct lpfc_hba *phba); int lpfc_check_fwlog_support(struct lpfc_hba *phba); /* NVME interfaces. */ |