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be2iscsi: Fix retrieving MCCQ_WRB in non-embedded Mbox path 

Getting WRB for MCCQ posting was done before looking if tag is
 available or not. This lead to increase phba->ctrl.mcc_obj.q.used
 variable and the WARN_ON message was coming from wrb_from_mccq().
 Moved getting wrb from mccq after checking for the tag.

 In wrb_from_mccq(), memset is done before returning wrb ptr.
 Removed memset of mccq wrb from all other functions.

Signed-off-by: John Soni Jose <sony.john-n@emulex.com>
Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Jayamohan Kallickal 2014-05-05 21:41:24 -04:00 committed by Christoph Hellwig
parent e8e7f27139
commit daa8dc081c
1 changed files with 7 additions and 7 deletions
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14
drivers/scsi/be2iscsi/be_mgmt.c
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@ -447,8 +447,8 @@ unsigned int mgmt_vendor_specific_fw_cmd(struct be_ctrl_info *ctrl,
struct be_dma_mem *nonemb_cmd)
{
struct be_cmd_resp_hdr *resp;
struct be_mcc_wrb *wrb = wrb_from_mccq(phba);
struct be_sge *mcc_sge = nonembedded_sgl(wrb);
struct be_mcc_wrb *wrb;
struct be_sge *mcc_sge;
unsigned int tag = 0;
struct iscsi_bsg_request *bsg_req = job->request;
struct be_bsg_vendor_cmd *req = nonemb_cmd->va;
@ -465,7 +465,6 @@ unsigned int mgmt_vendor_specific_fw_cmd(struct be_ctrl_info *ctrl,
req->sector = sector;
req->offset = offset;
spin_lock(&ctrl->mbox_lock);
memset(wrb, 0, sizeof(*wrb));
switch (bsg_req->rqst_data.h_vendor.vendor_cmd[0]) {
case BEISCSI_WRITE_FLASH:
@ -495,6 +494,8 @@ unsigned int mgmt_vendor_specific_fw_cmd(struct be_ctrl_info *ctrl,
return tag;
}
wrb = wrb_from_mccq(phba);
mcc_sge = nonembedded_sgl(wrb);
be_wrb_hdr_prepare(wrb, nonemb_cmd->size, false,
job->request_payload.sg_cnt);
mcc_sge->pa_hi = cpu_to_le32(upper_32_bits(nonemb_cmd->dma));
@ -525,7 +526,6 @@ int mgmt_epfw_cleanup(struct beiscsi_hba *phba, unsigned short ulp_num)
int status = 0;
spin_lock(&ctrl->mbox_lock);
memset(wrb, 0, sizeof(*wrb));
be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI,
@ -702,7 +702,6 @@ int mgmt_open_connection(struct beiscsi_hba *phba,
return tag;
}
wrb = wrb_from_mccq(phba);
memset(wrb, 0, sizeof(*wrb));
sge = nonembedded_sgl(wrb);
req = nonemb_cmd->va;
@ -804,7 +803,7 @@ static int mgmt_exec_nonemb_cmd(struct beiscsi_hba *phba,
int resp_buf_len)
{
struct be_ctrl_info *ctrl = &phba->ctrl;
struct be_mcc_wrb *wrb = wrb_from_mccq(phba);
struct be_mcc_wrb *wrb;
struct be_sge *sge;
unsigned int tag;
int rc = 0;
@ -816,7 +815,8 @@ static int mgmt_exec_nonemb_cmd(struct beiscsi_hba *phba,
rc = -ENOMEM;
goto free_cmd;
}
memset(wrb, 0, sizeof(*wrb));
wrb = wrb_from_mccq(phba);
wrb->tag0 |= tag;
sge = nonembedded_sgl(wrb);