ice: avoid unnecessary devm_ usage

1. pcaps are free'd right after AQ routines are done, no need for
   devm_'s
2. a test frame for loopback test in ethtool -t is destroyed at the end
   of the test so we don't need devm_ here either.
Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

drivers/net/ethernet/intel/ice/ice_common.c

@@ -1002,9 +1002,9 @@ static void ice_get_itr_intrl_gran(struct ice_hw *hw)
  */
 int ice_init_hw(struct ice_hw *hw)
 {
-	struct ice_aqc_get_phy_caps_data *pcaps;
+	struct ice_aqc_get_phy_caps_data *pcaps __free(kfree);
+	void *mac_buf __free(kfree);
 	u16 mac_buf_len;
-	void *mac_buf;
 	int status;
 
 	/* Set MAC type based on DeviceID */
@@ -1082,7 +1082,7 @@ int ice_init_hw(struct ice_hw *hw)
 	if (status)
 		goto err_unroll_sched;
 
-	pcaps = devm_kzalloc(ice_hw_to_dev(hw), sizeof(*pcaps), GFP_KERNEL);
+	pcaps = kzalloc(sizeof(*pcaps), GFP_KERNEL);
 	if (!pcaps) {
 		status = -ENOMEM;
 		goto err_unroll_sched;
@@ -1092,7 +1092,6 @@ int ice_init_hw(struct ice_hw *hw)
 	status = ice_aq_get_phy_caps(hw->port_info, false,
 				     ICE_AQC_REPORT_TOPO_CAP_MEDIA, pcaps,
 				     NULL);
-	devm_kfree(ice_hw_to_dev(hw), pcaps);
 	if (status)
 		dev_warn(ice_hw_to_dev(hw), "Get PHY capabilities failed status = %d, continuing anyway\n",
 			 status);
@@ -1119,18 +1118,15 @@ int ice_init_hw(struct ice_hw *hw)
 
 	/* Get MAC information */
 	/* A single port can report up to two (LAN and WoL) addresses */
-	mac_buf = devm_kcalloc(ice_hw_to_dev(hw), 2,
-			       sizeof(struct ice_aqc_manage_mac_read_resp),
-			       GFP_KERNEL);
-	mac_buf_len = 2 * sizeof(struct ice_aqc_manage_mac_read_resp);
-
+	mac_buf = kcalloc(2, sizeof(struct ice_aqc_manage_mac_read_resp),
+			  GFP_KERNEL);
 	if (!mac_buf) {
 		status = -ENOMEM;
 		goto err_unroll_fltr_mgmt_struct;
 	}
 
+	mac_buf_len = 2 * sizeof(struct ice_aqc_manage_mac_read_resp);
 	status = ice_aq_manage_mac_read(hw, mac_buf, mac_buf_len, NULL);
-	devm_kfree(ice_hw_to_dev(hw), mac_buf);
 
 	if (status)
 		goto err_unroll_fltr_mgmt_struct;
@@ -3276,19 +3272,14 @@ int ice_update_link_info(struct ice_port_info *pi)
 		return status;
 
 	if (li->link_info & ICE_AQ_MEDIA_AVAILABLE) {
-		struct ice_aqc_get_phy_caps_data *pcaps;
-		struct ice_hw *hw;
+		struct ice_aqc_get_phy_caps_data *pcaps __free(kfree);
 
-		hw = pi->hw;
-		pcaps = devm_kzalloc(ice_hw_to_dev(hw), sizeof(*pcaps),
-				     GFP_KERNEL);
+		pcaps = kzalloc(sizeof(*pcaps), GFP_KERNEL);
 		if (!pcaps)
 			return -ENOMEM;
 
 		status = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_TOPO_CAP_MEDIA,
 					     pcaps, NULL);
-
-		devm_kfree(ice_hw_to_dev(hw), pcaps);
 	}
 
 	return status;
@@ -3429,8 +3420,8 @@ ice_cfg_phy_fc(struct ice_port_info *pi, struct ice_aqc_set_phy_cfg_data *cfg,
 int
 ice_set_fc(struct ice_port_info *pi, u8 *aq_failures, bool ena_auto_link_update)
 {
+	struct ice_aqc_get_phy_caps_data *pcaps __free(kfree);
 	struct ice_aqc_set_phy_cfg_data cfg = { 0 };
-	struct ice_aqc_get_phy_caps_data *pcaps;
 	struct ice_hw *hw;
 	int status;
 
@@ -3440,7 +3431,7 @@ ice_set_fc(struct ice_port_info *pi, u8 *aq_failures, bool ena_auto_link_update)
 	*aq_failures = 0;
 	hw = pi->hw;
 
-	pcaps = devm_kzalloc(ice_hw_to_dev(hw), sizeof(*pcaps), GFP_KERNEL);
+	pcaps = kzalloc(sizeof(*pcaps), GFP_KERNEL);
 	if (!pcaps)
 		return -ENOMEM;
 
@@ -3492,7 +3483,6 @@ ice_set_fc(struct ice_port_info *pi, u8 *aq_failures, bool ena_auto_link_update)
 	}
 
 out:
-	devm_kfree(ice_hw_to_dev(hw), pcaps);
 	return status;
 }
 
@@ -3571,7 +3561,7 @@ int
 ice_cfg_phy_fec(struct ice_port_info *pi, struct ice_aqc_set_phy_cfg_data *cfg,
 		enum ice_fec_mode fec)
 {
-	struct ice_aqc_get_phy_caps_data *pcaps;
+	struct ice_aqc_get_phy_caps_data *pcaps __free(kfree);
 	struct ice_hw *hw;
 	int status;
 
@@ -3640,8 +3630,6 @@ ice_cfg_phy_fec(struct ice_port_info *pi, struct ice_aqc_set_phy_cfg_data *cfg,
 	}
 
 out:
-	kfree(pcaps);
-
 	return status;
 }
 

drivers/net/ethernet/intel/ice/ice_ethtool.c

@@ -802,7 +802,7 @@ static int ice_lbtest_create_frame(struct ice_pf *pf, u8 **ret_data, u16 size)
 	if (!pf)
 		return -EINVAL;
 
-	data = devm_kzalloc(ice_pf_to_dev(pf), size, GFP_KERNEL);
+	data = kzalloc(size, GFP_KERNEL);
 	if (!data)
 		return -ENOMEM;
 
@@ -945,11 +945,9 @@ static u64 ice_loopback_test(struct net_device *netdev)
 	int num_frames, valid_frames;
 	struct ice_tx_ring *tx_ring;
 	struct ice_rx_ring *rx_ring;
-	struct device *dev;
-	u8 *tx_frame;
+	u8 *tx_frame __free(kfree);
 	int i;
 
-	dev = ice_pf_to_dev(pf);
 	netdev_info(netdev, "loopback test\n");
 
 	test_vsi = ice_lb_vsi_setup(pf, pf->hw.port_info);
@@ -994,7 +992,7 @@ static u64 ice_loopback_test(struct net_device *netdev)
 	for (i = 0; i < num_frames; i++) {
 		if (ice_diag_send(tx_ring, tx_frame, ICE_LB_FRAME_SIZE)) {
 			ret = 8;
-			goto lbtest_free_frame;
+			goto remove_mac_filters;
 		}
 	}
 
@@ -1004,8 +1002,6 @@ static u64 ice_loopback_test(struct net_device *netdev)
 	else if (valid_frames != num_frames)
 		ret = 10;
 
-lbtest_free_frame:
-	devm_kfree(dev, tx_frame);
 remove_mac_filters:
 	if (ice_fltr_remove_mac(test_vsi, broadcast, ICE_FWD_TO_VSI))
 		netdev_err(netdev, "Could not remove MAC filter for the test VSI\n");