[dpdk-dev] [PATCH 26/27] net/ice/base: remove unused struct member

[Qi Zhang <qi.z.zhang@intel.com>]

The only time you can ever have a rq_last_status is if
a firmware event was somehow reporting a status on the receive
queue, which are generally firmware initiated events or
mailbox messages from a VF.  Mostly this struct member was unused.

Fix this problem by still printing the value of the field in a debug
print, but don't store the value forever in a struct, potentially
creating opportunities for callers to use the wrong struct member.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
---
 drivers/net/ice/base/ice_controlq.c | 6 +++---
 drivers/net/ice/base/ice_controlq.h | 1 -
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ice/base/ice_controlq.c b/drivers/net/ice/base/ice_controlq.c
index 4c4f92552b..59e7c5f88d 100644
--- a/drivers/net/ice/base/ice_controlq.c
+++ b/drivers/net/ice/base/ice_controlq.c
@@ -1110,6 +1110,7 @@ ice_clean_rq_elem(struct ice_hw *hw, struct ice_ctl_q_info *cq,
 		  struct ice_rq_event_info *e, u16 *pending)
 {
 	u16 ntc = cq->rq.next_to_clean;
+	enum ice_aq_err rq_last_status;
 	enum ice_status ret_code = ICE_SUCCESS;
 	struct ice_aq_desc *desc;
 	struct ice_dma_mem *bi;
@@ -1143,13 +1144,12 @@ ice_clean_rq_elem(struct ice_hw *hw, struct ice_ctl_q_info *cq,
 	desc = ICE_CTL_Q_DESC(cq->rq, ntc);
 	desc_idx = ntc;
 
-	cq->rq_last_status = (enum ice_aq_err)LE16_TO_CPU(desc->retval);
+	rq_last_status = (enum ice_aq_err)LE16_TO_CPU(desc->retval);
 	flags = LE16_TO_CPU(desc->flags);
 	if (flags & ICE_AQ_FLAG_ERR) {
 		ret_code = ICE_ERR_AQ_ERROR;
 		ice_debug(hw, ICE_DBG_AQ_MSG, "Control Receive Queue Event 0x%04X received with error 0x%X\n",
-			  LE16_TO_CPU(desc->opcode),
-			  cq->rq_last_status);
+			  LE16_TO_CPU(desc->opcode), rq_last_status);
 	}
 	ice_memcpy(&e->desc, desc, sizeof(e->desc), ICE_DMA_TO_NONDMA);
 	datalen = LE16_TO_CPU(desc->datalen);
diff --git a/drivers/net/ice/base/ice_controlq.h b/drivers/net/ice/base/ice_controlq.h
index 84c114f7a4..161c1bebff 100644
--- a/drivers/net/ice/base/ice_controlq.h
+++ b/drivers/net/ice/base/ice_controlq.h
@@ -84,7 +84,6 @@ struct ice_rq_event_info {
 /* Control Queue information */
 struct ice_ctl_q_info {
 	enum ice_ctl_q qtype;
-	enum ice_aq_err rq_last_status;	/* last status on receive queue */
 	struct ice_ctl_q_ring rq;	/* receive queue */
 	struct ice_ctl_q_ring sq;	/* send queue */
 	u32 sq_cmd_timeout;		/* send queue cmd write back timeout */
-- 
2.26.2