diff options
Diffstat (limited to 'drivers/infiniband/hw/bnxt_re/qplib_rcfw.c')
| -rw-r--r-- | drivers/infiniband/hw/bnxt_re/qplib_rcfw.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/drivers/infiniband/hw/bnxt_re/qplib_rcfw.c b/drivers/infiniband/hw/bnxt_re/qplib_rcfw.c index 2bdb1562bd21..bb5574adf195 100644 --- a/drivers/infiniband/hw/bnxt_re/qplib_rcfw.c +++ b/drivers/infiniband/hw/bnxt_re/qplib_rcfw.c @@ -88,7 +88,6 @@ static int __send_message(struct bnxt_qplib_rcfw *rcfw, struct cmdq_base *req, unsigned long flags; u32 size, opcode; u16 cookie, cbit; - int pg, idx; u8 *preq; opcode = req->opcode; @@ -149,9 +148,6 @@ static int __send_message(struct bnxt_qplib_rcfw *rcfw, struct cmdq_base *req, preq = (u8 *)req; size = req->cmd_size * BNXT_QPLIB_CMDQE_UNITS; do { - pg = 0; - idx = 0; - /* Locate the next cmdq slot */ sw_prod = HWQ_CMP(cmdq->prod, cmdq); cmdqe = &cmdq_ptr[get_cmdq_pg(sw_prod)][get_cmdq_idx(sw_prod)]; @@ -172,14 +168,14 @@ static int __send_message(struct bnxt_qplib_rcfw *rcfw, struct cmdq_base *req, rcfw->seq_num++; cmdq_prod = cmdq->prod; - if (rcfw->flags & FIRMWARE_FIRST_FLAG) { + if (test_bit(FIRMWARE_FIRST_FLAG, &rcfw->flags)) { /* The very first doorbell write * is required to set this flag * which prompts the FW to reset * its internal pointers */ - cmdq_prod |= FIRMWARE_FIRST_FLAG; - rcfw->flags &= ~FIRMWARE_FIRST_FLAG; + cmdq_prod |= BIT(FIRMWARE_FIRST_FLAG); + clear_bit(FIRMWARE_FIRST_FLAG, &rcfw->flags); } /* ring CMDQ DB */ @@ -306,6 +302,8 @@ static int bnxt_qplib_process_qp_event(struct bnxt_qplib_rcfw *rcfw, "QPLIB: qpid 0x%x, req_err=0x%x, resp_err=0x%x\n", qp_id, err_event->req_err_state_reason, err_event->res_err_state_reason); + if (!qp) + break; bnxt_qplib_acquire_cq_locks(qp, &flags); bnxt_qplib_mark_qp_error(qp); bnxt_qplib_release_cq_locks(qp, &flags); @@ -361,6 +359,10 @@ static void bnxt_qplib_service_creq(unsigned long data) creqe = &creq_ptr[get_creq_pg(sw_cons)][get_creq_idx(sw_cons)]; if (!CREQ_CMP_VALID(creqe, raw_cons, creq->max_elements)) break; + /* The valid test of the entry must be done first before + * reading any further. + */ + dma_rmb(); type = creqe->type & CREQ_BASE_TYPE_MASK; switch (type) { @@ -622,7 +624,7 @@ int bnxt_qplib_enable_rcfw_channel(struct pci_dev *pdev, /* General */ rcfw->seq_num = 0; - rcfw->flags = FIRMWARE_FIRST_FLAG; + set_bit(FIRMWARE_FIRST_FLAG, &rcfw->flags); bmap_size = BITS_TO_LONGS(RCFW_MAX_OUTSTANDING_CMD * sizeof(unsigned long)); rcfw->cmdq_bitmap = kzalloc(bmap_size, GFP_KERNEL); |