linux-kernel - [PATCH net-next 2/5] net: dsa: realtek: rtl8365mb: remove port

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Date:   Mon,  6 Jun 2022 15:45:50 +0200
From:   Alvin Šipraga <alvin@...s.dk>
To:     luizluca@...il.com, Linus Walleij <linus.walleij@...aro.org>,
        Alvin Šipraga <alsi@...g-olufsen.dk>,
        Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Russell King <linux@...linux.org.uk>
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH net-next 2/5] net: dsa: realtek: rtl8365mb: remove port_mask private data member

From: Alvin Šipraga <alsi@...g-olufsen.dk>

There is no real need for this variable: the line change interrupt mask
is sufficiently masked out when getting linkup_ind and linkdown_ind in
the interrupt handler.

Signed-off-by: Alvin Šipraga <alsi@...g-olufsen.dk>
---
 drivers/net/dsa/realtek/rtl8365mb.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/net/dsa/realtek/rtl8365mb.c b/drivers/net/dsa/realtek/rtl8365mb.c
index 0cc90e96aab7..c64219271a2b 100644
--- a/drivers/net/dsa/realtek/rtl8365mb.c
+++ b/drivers/net/dsa/realtek/rtl8365mb.c
@@ -564,7 +564,6 @@ struct rtl8365mb_port {
  * @irq: registered IRQ or zero
  * @chip_id: chip identifier
  * @chip_ver: chip silicon revision
- * @port_mask: mask of all ports
  * @learn_limit_max: maximum number of L2 addresses the chip can learn
  * @cpu: CPU tagging and CPU port configuration for this chip
  * @mib_lock: prevent concurrent reads of MIB counters
@@ -579,7 +578,6 @@ struct rtl8365mb {
 	int irq;
 	u32 chip_id;
 	u32 chip_ver;
-	u32 port_mask;
 	u32 learn_limit_max;
 	struct rtl8365mb_cpu cpu;
 	struct mutex mib_lock;
@@ -1540,7 +1538,7 @@ static irqreturn_t rtl8365mb_irq(int irq, void *data)
 
 		linkdown_ind = FIELD_GET(RTL8365MB_PORT_LINKDOWN_IND_MASK, val);
 
-		line_changes = (linkup_ind | linkdown_ind) & mb->port_mask;
+		line_changes = linkup_ind | linkdown_ind;
 	}
 
 	if (!line_changes)
@@ -2029,7 +2027,6 @@ static int rtl8365mb_detect(struct realtek_priv *priv)
 		mb->priv = priv;
 		mb->chip_id = chip_id;
 		mb->chip_ver = chip_ver;
-		mb->port_mask = GENMASK(priv->num_ports - 1, 0);
 		mb->learn_limit_max = RTL8365MB_LEARN_LIMIT_MAX;
 		mb->jam_table = rtl8365mb_init_jam_8365mb_vc;
 		mb->jam_size = ARRAY_SIZE(rtl8365mb_init_jam_8365mb_vc);
-- 
2.36.0