If rc contains a non-zero return code from bnxt_hwrm_send_message(),
HWRM_CHECK_RESULT_SILENT() will return.
Just after that code, there is an 'if (!rc) {...} else {...}'.
Coverity is complaining that this if else statement is dead code as
rc will always be 0 if that code is reached.
4309 rc = bnxt_hwrm_send_message(bp, &req, sizeof(req),
BNXT_USE_CHIMP_MB);
cond_const: Condition rc, taking false branch.
Now the value of rc is equal to 0.
4310 HWRM_CHECK_RESULT_SILENT();
4311
const: At condition rc, the value of rc must be equal to 0.
dead_error_condition: The condition !rc must be true.
4312 if (!rc) {
[snip]
4373 } else {
CID 343450 (#1 of 1): Logically dead code
(DEADCODE)dead_error_line: Execution cannot
reach this statement: rc = 0;.
4374 rc = 0;
4375 }
Coverity issue: 343450
Fixes: f8168ca0e690 ("net/bnxt: support thor controller")
Cc: lance.richard...@broadcom.com
Cc: sta...@dpdk.org
Signed-off-by: Kevin Traynor <ktray...@redhat.com>
---
drivers/net/bnxt/bnxt_hwrm.c | 118 +++++++++++++++++------------------
1 file changed, 56 insertions(+), 62 deletions(-)
diff --git a/drivers/net/bnxt/bnxt_hwrm.c b/drivers/net/bnxt/bnxt_hwrm.c
index 9883fb506..5378e3e9c 100644
--- a/drivers/net/bnxt/bnxt_hwrm.c
+++ b/drivers/net/bnxt/bnxt_hwrm.c
@@ -4298,5 +4298,7 @@ int bnxt_hwrm_func_backing_store_qcaps(struct bnxt *bp)
struct hwrm_func_backing_store_qcaps_output *resp =
bp->hwrm_cmd_resp_addr;
- int rc;
+ struct bnxt_ctx_pg_info *ctx_pg;
+ struct bnxt_ctx_mem_info *ctx;
+ int rc, total_alloc_len, i;
if (!BNXT_CHIP_THOR(bp) ||
@@ -4310,68 +4312,60 @@ int bnxt_hwrm_func_backing_store_qcaps(struct bnxt *bp)
HWRM_CHECK_RESULT_SILENT();
- if (!rc) {
- struct bnxt_ctx_pg_info *ctx_pg;
- struct bnxt_ctx_mem_info *ctx;
- int total_alloc_len;
- int i;
+ total_alloc_len = sizeof(*ctx);
+ ctx = rte_malloc("bnxt_ctx_mem", total_alloc_len,
+ RTE_CACHE_LINE_SIZE);
+ if (!ctx) {
+ rc = -ENOMEM;
+ goto ctx_err;
+ }
+ memset(ctx, 0, total_alloc_len);
- total_alloc_len = sizeof(*ctx);
- ctx = rte_malloc("bnxt_ctx_mem", total_alloc_len,
- RTE_CACHE_LINE_SIZE);
- if (!ctx) {
- rc = -ENOMEM;
- goto ctx_err;
- }
- memset(ctx, 0, total_alloc_len);
+ ctx_pg = rte_malloc("bnxt_ctx_pg_mem",
+ sizeof(*ctx_pg) * BNXT_MAX_Q,
+ RTE_CACHE_LINE_SIZE);
+ if (!ctx_pg) {
+ rc = -ENOMEM;
+ goto ctx_err;
+ }
+ for (i = 0; i < BNXT_MAX_Q; i++, ctx_pg++)
+ ctx->tqm_mem[i] = ctx_pg;
- ctx_pg = rte_malloc("bnxt_ctx_pg_mem",
- sizeof(*ctx_pg) * BNXT_MAX_Q,
- RTE_CACHE_LINE_SIZE);
- if (!ctx_pg) {
- rc = -ENOMEM;
- goto ctx_err;
- }
- for (i = 0; i < BNXT_MAX_Q; i++, ctx_pg++)
- ctx->tqm_mem[i] = ctx_pg;
+ bp->ctx = ctx;
+ ctx->qp_max_entries = rte_le_to_cpu_32(resp->qp_max_entries);
+ ctx->qp_min_qp1_entries =
+ rte_le_to_cpu_16(resp->qp_min_qp1_entries);
+ ctx->qp_max_l2_entries =
+ rte_le_to_cpu_16(resp->qp_max_l2_entries);
+ ctx->qp_entry_size = rte_le_to_cpu_16(resp->qp_entry_size);
+ ctx->srq_max_l2_entries =
+ rte_le_to_cpu_16(resp->srq_max_l2_entries);
+ ctx->srq_max_entries = rte_le_to_cpu_32(resp->srq_max_entries);
+ ctx->srq_entry_size = rte_le_to_cpu_16(resp->srq_entry_size);
+ ctx->cq_max_l2_entries =
+ rte_le_to_cpu_16(resp->cq_max_l2_entries);
+ ctx->cq_max_entries = rte_le_to_cpu_32(resp->cq_max_entries);
+ ctx->cq_entry_size = rte_le_to_cpu_16(resp->cq_entry_size);
+ ctx->vnic_max_vnic_entries =
+ rte_le_to_cpu_16(resp->vnic_max_vnic_entries);
+ ctx->vnic_max_ring_table_entries =
+ rte_le_to_cpu_16(resp->vnic_max_ring_table_entries);
+ ctx->vnic_entry_size = rte_le_to_cpu_16(resp->vnic_entry_size);
+ ctx->stat_max_entries =
+ rte_le_to_cpu_32(resp->stat_max_entries);
+ ctx->stat_entry_size = rte_le_to_cpu_16(resp->stat_entry_size);
+ ctx->tqm_entry_size = rte_le_to_cpu_16(resp->tqm_entry_size);
+ ctx->tqm_min_entries_per_ring =
+ rte_le_to_cpu_32(resp->tqm_min_entries_per_ring);
+ ctx->tqm_max_entries_per_ring =
+ rte_le_to_cpu_32(resp->tqm_max_entries_per_ring);
+ ctx->tqm_entries_multiple = resp->tqm_entries_multiple;
+ if (!ctx->tqm_entries_multiple)
+ ctx->tqm_entries_multiple = 1;
+ ctx->mrav_max_entries =
+ rte_le_to_cpu_32(resp->mrav_max_entries);
+ ctx->mrav_entry_size = rte_le_to_cpu_16(resp->mrav_entry_size);
+ ctx->tim_entry_size = rte_le_to_cpu_16(resp->tim_entry_size);
+ ctx->tim_max_entries = rte_le_to_cpu_32(resp->tim_max_entries);
- bp->ctx = ctx;
- ctx->qp_max_entries = rte_le_to_cpu_32(resp->qp_max_entries);
- ctx->qp_min_qp1_entries =
- rte_le_to_cpu_16(resp->qp_min_qp1_entries);
- ctx->qp_max_l2_entries =
- rte_le_to_cpu_16(resp->qp_max_l2_entries);
- ctx->qp_entry_size = rte_le_to_cpu_16(resp->qp_entry_size);
- ctx->srq_max_l2_entries =
- rte_le_to_cpu_16(resp->srq_max_l2_entries);
- ctx->srq_max_entries = rte_le_to_cpu_32(resp->srq_max_entries);
- ctx->srq_entry_size = rte_le_to_cpu_16(resp->srq_entry_size);
- ctx->cq_max_l2_entries =
- rte_le_to_cpu_16(resp->cq_max_l2_entries);
- ctx->cq_max_entries = rte_le_to_cpu_32(resp->cq_max_entries);
- ctx->cq_entry_size = rte_le_to_cpu_16(resp->cq_entry_size);
- ctx->vnic_max_vnic_entries =
- rte_le_to_cpu_16(resp->vnic_max_vnic_entries);
- ctx->vnic_max_ring_table_entries =
- rte_le_to_cpu_16(resp->vnic_max_ring_table_entries);
- ctx->vnic_entry_size = rte_le_to_cpu_16(resp->vnic_entry_size);
- ctx->stat_max_entries =
- rte_le_to_cpu_32(resp->stat_max_entries);
- ctx->stat_entry_size = rte_le_to_cpu_16(resp->stat_entry_size);
- ctx->tqm_entry_size = rte_le_to_cpu_16(resp->tqm_entry_size);
- ctx->tqm_min_entries_per_ring =
- rte_le_to_cpu_32(resp->tqm_min_entries_per_ring);
- ctx->tqm_max_entries_per_ring =
- rte_le_to_cpu_32(resp->tqm_max_entries_per_ring);
- ctx->tqm_entries_multiple = resp->tqm_entries_multiple;
- if (!ctx->tqm_entries_multiple)
- ctx->tqm_entries_multiple = 1;
- ctx->mrav_max_entries =
- rte_le_to_cpu_32(resp->mrav_max_entries);
- ctx->mrav_entry_size = rte_le_to_cpu_16(resp->mrav_entry_size);
- ctx->tim_entry_size = rte_le_to_cpu_16(resp->tim_entry_size);
- ctx->tim_max_entries = rte_le_to_cpu_32(resp->tim_max_entries);
- } else {
- rc = 0;
- }
ctx_err:
HWRM_UNLOCK();
--
2.21.0
