linux-kernel - [PATCH] net: phy: nxp-c45-tja11xx: use bitmap

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Message-ID: <20250913182837.206800-1-yury.norov@gmail.com>
Date: Sat, 13 Sep 2025 14:28:36 -0400
From: "Yury Norov (NVIDIA)" <yury.norov@...il.com>
To: Andrei Botila <andrei.botila@....nxp.com>,
	Andrew Lunn <andrew@...n.ch>,
	Heiner Kallweit <hkallweit1@...il.com>,
	Russell King <linux@...linux.org.uk>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Sabrina Dubroca <sd@...asysnail.net>,
	netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: "Yury Norov (NVIDIA)" <yury.norov@...il.com>
Subject: [PATCH] net: phy: nxp-c45-tja11xx: use bitmap_empty() where appropriate

The driver opencodes bitmap_empty() in a couple of funcitons. Switch to
the proper and more verbose API.

Signed-off-by: Yury Norov (NVIDIA) <yury.norov@...il.com>
---
 drivers/net/phy/nxp-c45-tja11xx-macsec.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/net/phy/nxp-c45-tja11xx-macsec.c b/drivers/net/phy/nxp-c45-tja11xx-macsec.c
index 550ef08970f4..fc897ba79b03 100644
--- a/drivers/net/phy/nxp-c45-tja11xx-macsec.c
+++ b/drivers/net/phy/nxp-c45-tja11xx-macsec.c
@@ -926,7 +926,6 @@ static int nxp_c45_mdo_dev_open(struct macsec_context *ctx)
 	struct phy_device *phydev = ctx->phydev;
 	struct nxp_c45_phy *priv = phydev->priv;
 	struct nxp_c45_secy *phy_secy;
-	int any_bit_set;
 
 	phy_secy = nxp_c45_find_secy(&priv->macsec->secy_list, ctx->secy->sci);
 	if (IS_ERR(phy_secy))
@@ -939,8 +938,7 @@ static int nxp_c45_mdo_dev_open(struct macsec_context *ctx)
 	if (phy_secy->rx_sc)
 		nxp_c45_rx_sc_en(phydev, phy_secy->rx_sc, true);
 
-	any_bit_set = find_first_bit(priv->macsec->secy_bitmap, TX_SC_MAX);
-	if (any_bit_set == TX_SC_MAX)
+	if (bitmap_empty(priv->macsec->secy_bitmap, TX_SC_MAX))
 		nxp_c45_macsec_en(phydev, true);
 
 	set_bit(phy_secy->secy_id, priv->macsec->secy_bitmap);
@@ -953,7 +951,6 @@ static int nxp_c45_mdo_dev_stop(struct macsec_context *ctx)
 	struct phy_device *phydev = ctx->phydev;
 	struct nxp_c45_phy *priv = phydev->priv;
 	struct nxp_c45_secy *phy_secy;
-	int any_bit_set;
 
 	phy_secy = nxp_c45_find_secy(&priv->macsec->secy_list, ctx->secy->sci);
 	if (IS_ERR(phy_secy))
@@ -967,8 +964,7 @@ static int nxp_c45_mdo_dev_stop(struct macsec_context *ctx)
 	nxp_c45_set_rx_sc0_impl(phydev, false);
 
 	clear_bit(phy_secy->secy_id, priv->macsec->secy_bitmap);
-	any_bit_set = find_first_bit(priv->macsec->secy_bitmap, TX_SC_MAX);
-	if (any_bit_set == TX_SC_MAX)
+	if (bitmap_empty(priv->macsec->secy_bitmap, TX_SC_MAX))
 		nxp_c45_macsec_en(phydev, false);
 
 	return 0;
-- 
2.43.0