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| author | Shivasharan S <shivasharan.srikanteshwara@broadcom.com> | 2017-02-10 00:59:08 -0800 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2017-02-13 07:26:21 -0500 |
| commit | 52205ac8940b43cca1711abfb43a05e7df08c09e (patch) | |
| tree | faaff9d0d7019d27429252aa33cd6d320789b97a /drivers/scsi/megaraid | |
| parent | f55cf47d925e48cddabafd3bc829f1ebc05c334d (diff) | |
| download | linux-52205ac8940b43cca1711abfb43a05e7df08c09e.tar.gz linux-52205ac8940b43cca1711abfb43a05e7df08c09e.tar.bz2 linux-52205ac8940b43cca1711abfb43a05e7df08c09e.zip | |
scsi: megaraid_sas: megasas_get_request_descriptor always return valid desc
No functional change. Code clean up. Removing error code which is not
valid scenario. In megasas_get_request_descriptor we can remove the
error handling which is not required. With fusion controllers, if there
is a valid message frame available, we are guaranteed to get a
corresponding request descriptor.
Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/megaraid')
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas_fusion.c | 24 |
1 files changed, 2 insertions, 22 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c index 6ec7a18f6dbf..b6c5dc5be5c7 100644 --- a/drivers/scsi/megaraid/megaraid_sas_fusion.c +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c @@ -2438,18 +2438,12 @@ megasas_build_io_fusion(struct megasas_instance *instance, return 0; } -union MEGASAS_REQUEST_DESCRIPTOR_UNION * +static union MEGASAS_REQUEST_DESCRIPTOR_UNION * megasas_get_request_descriptor(struct megasas_instance *instance, u16 index) { u8 *p; struct fusion_context *fusion; - if (index >= instance->max_mpt_cmds) { - dev_err(&instance->pdev->dev, "Invalid SMID (0x%x)request for " - "descriptor for scsi%d\n", index, - instance->host->host_no); - return NULL; - } fusion = instance->ctrl_context; p = fusion->req_frames_desc + sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) * index; @@ -2960,7 +2954,7 @@ build_mpt_mfi_pass_thru(struct megasas_instance *instance, union MEGASAS_REQUEST_DESCRIPTOR_UNION * build_mpt_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd) { - union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; + union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc = NULL; u16 index; if (build_mpt_mfi_pass_thru(instance, cmd)) { @@ -2972,9 +2966,6 @@ build_mpt_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd) req_desc = megasas_get_request_descriptor(instance, index - 1); - if (!req_desc) - return NULL; - req_desc->Words = 0; req_desc->SCSIIO.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); @@ -2997,11 +2988,6 @@ megasas_issue_dcmd_fusion(struct megasas_instance *instance, union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; req_desc = build_mpt_cmd(instance, cmd); - if (!req_desc) { - dev_info(&instance->pdev->dev, "Failed from %s %d\n", - __func__, __LINE__); - return DCMD_NOT_FIRED; - } megasas_fire_cmd_fusion(instance, req_desc); return DCMD_SUCCESS; @@ -3438,12 +3424,6 @@ megasas_issue_tm(struct megasas_instance *instance, u16 device_handle, req_desc = megasas_get_request_descriptor(instance, (cmd_fusion->index - 1)); - if (!req_desc) { - dev_err(&instance->pdev->dev, "Failed from %s %d\n", - __func__, __LINE__); - megasas_return_cmd(instance, cmd_mfi); - return -ENOMEM; - } cmd_fusion->request_desc = req_desc; req_desc->Words = 0; |