linux-kernel - [PATCH] net: atlantic: Use the bitmap API instead of hand-writing it

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Message-Id: <27b498801eb6d9d9876b35165c57b7f8606f4da8.1642920729.git.christophe.jaillet@wanadoo.fr>
Date:   Sun, 23 Jan 2022 07:53:46 +0100
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     Igor Russkikh <irusskikh@...vell.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        netdev@...r.kernel.org
Subject: [PATCH] net: atlantic: Use the bitmap API instead of hand-writing it

Simplify code by using bitmap_weight() and bitmap_zero() instead of
hand-writing these functions.

Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 drivers/net/ethernet/aquantia/atlantic/aq_filters.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_filters.c b/drivers/net/ethernet/aquantia/atlantic/aq_filters.c
index 1bc4d33a0ce5..30a573db02bb 100644
--- a/drivers/net/ethernet/aquantia/atlantic/aq_filters.c
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_filters.c
@@ -826,7 +826,6 @@ int aq_filters_vlans_update(struct aq_nic_s *aq_nic)
 	struct aq_hw_s *aq_hw = aq_nic->aq_hw;
 	int hweight = 0;
 	int err = 0;
-	int i;
 
 	if (unlikely(!aq_hw_ops->hw_filter_vlan_set))
 		return -EOPNOTSUPP;
@@ -837,8 +836,7 @@ int aq_filters_vlans_update(struct aq_nic_s *aq_nic)
 			 aq_nic->aq_hw_rx_fltrs.fl2.aq_vlans);
 
 	if (aq_nic->ndev->features & NETIF_F_HW_VLAN_CTAG_FILTER) {
-		for (i = 0; i < BITS_TO_LONGS(VLAN_N_VID); i++)
-			hweight += hweight_long(aq_nic->active_vlans[i]);
+		hweight = bitmap_weight(aq_nic->active_vlans, VLAN_N_VID);
 
 		err = aq_hw_ops->hw_filter_vlan_ctrl(aq_hw, false);
 		if (err)
@@ -871,7 +869,7 @@ int aq_filters_vlan_offload_off(struct aq_nic_s *aq_nic)
 	struct aq_hw_s *aq_hw = aq_nic->aq_hw;
 	int err = 0;
 
-	memset(aq_nic->active_vlans, 0, sizeof(aq_nic->active_vlans));
+	bitmap_zero(aq_nic->active_vlans, VLAN_N_VID);
 	aq_fvlan_rebuild(aq_nic, aq_nic->active_vlans,
 			 aq_nic->aq_hw_rx_fltrs.fl2.aq_vlans);
 
-- 
2.32.0