bnxt_en: remove redundant debug register dma mem allocation

hwrm_dbg_resp_addr and hwrm_dbg_resp_dma_addr are never used
and can be removed.
Signed-off-by: NYueHaibing <yuehaibing@huawei.com>
Acked-by: NMichael Chan <michael.chan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/broadcom/bnxt/bnxt.c

@@ -3012,13 +3012,6 @@ static void bnxt_free_hwrm_resources(struct bnxt *bp)
 			  bp->hwrm_cmd_resp_dma_addr);
 
 	bp->hwrm_cmd_resp_addr = NULL;
-	if (bp->hwrm_dbg_resp_addr) {
-		dma_free_coherent(&pdev->dev, HWRM_DBG_REG_BUF_SIZE,
-				  bp->hwrm_dbg_resp_addr,
-				  bp->hwrm_dbg_resp_dma_addr);
-
-		bp->hwrm_dbg_resp_addr = NULL;
-	}
 }
 
 static int bnxt_alloc_hwrm_resources(struct bnxt *bp)
@@ -3030,12 +3023,6 @@ static int bnxt_alloc_hwrm_resources(struct bnxt *bp)
 						   GFP_KERNEL);
 	if (!bp->hwrm_cmd_resp_addr)
 		return -ENOMEM;
-	bp->hwrm_dbg_resp_addr = dma_alloc_coherent(&pdev->dev,
-						    HWRM_DBG_REG_BUF_SIZE,
-						    &bp->hwrm_dbg_resp_dma_addr,
-						    GFP_KERNEL);
-	if (!bp->hwrm_dbg_resp_addr)
-		netdev_warn(bp->dev, "fail to alloc debug register dma mem\n");
 
 	return 0;
 }

drivers/net/ethernet/broadcom/bnxt/bnxt.h

@@ -1287,9 +1287,6 @@ struct bnxt {
 	dma_addr_t		hwrm_short_cmd_req_dma_addr;
 	void			*hwrm_cmd_resp_addr;
 	dma_addr_t		hwrm_cmd_resp_dma_addr;
-	void			*hwrm_dbg_resp_addr;
-	dma_addr_t		hwrm_dbg_resp_dma_addr;
-#define HWRM_DBG_REG_BUF_SIZE	128
 
 	struct rx_port_stats	*hw_rx_port_stats;
 	struct tx_port_stats	*hw_tx_port_stats;