linux-kernel - [PATCH net-next v2 6/8] net: dsa: microchip: ksz8_r_dyn_mac_table(): ksz: do not return EAGAIN on timeout

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Date: Wed,  3 Apr 2024 14:50:37 +0200
From: Oleksij Rempel <o.rempel@...gutronix.de>
To: "David S. Miller" <davem@...emloft.net>,
	Andrew Lunn <andrew@...n.ch>,
	Eric Dumazet <edumazet@...gle.com>,
	Florian Fainelli <f.fainelli@...il.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Vladimir Oltean <olteanv@...il.com>,
	Woojung Huh <woojung.huh@...rochip.com>,
	Arun Ramadoss <arun.ramadoss@...rochip.com>
Cc: Oleksij Rempel <o.rempel@...gutronix.de>,
	kernel@...gutronix.de,
	linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org,
	UNGLinuxDriver@...rochip.com,
	Søren Andersen <san@...v.dk>
Subject: [PATCH net-next v2 6/8] net: dsa: microchip: ksz8_r_dyn_mac_table(): ksz: do not return EAGAIN on timeout

EAGAIN was not used by previous code and not used by  current code. So,
remove it and use proper error value.

Reviewed-by: Vladimir Oltean <olteanv@...il.com>
Acked-by: Arun Ramadoss <arun.ramadoss@...rochip.com>
Signed-off-by: Oleksij Rempel <o.rempel@...gutronix.de>
---
 drivers/net/dsa/microchip/ksz8795.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/net/dsa/microchip/ksz8795.c b/drivers/net/dsa/microchip/ksz8795.c
index 5765d23bc6edc..eeb32df0939d1 100644
--- a/drivers/net/dsa/microchip/ksz8795.c
+++ b/drivers/net/dsa/microchip/ksz8795.c
@@ -396,7 +396,7 @@ static int ksz8_valid_dyn_entry(struct ksz_device *dev, u8 *data)
 
 	/* Entry is not ready for accessing. */
 	if (*data & masks[DYNAMIC_MAC_TABLE_NOT_READY]) {
-		return -EAGAIN;
+		return -ETIMEDOUT;
 	/* Entry is ready for accessing. */
 	} else {
 		ksz_read8(dev, regs[REG_IND_DATA_8], data);
@@ -431,15 +431,14 @@ static int ksz8_r_dyn_mac_table(struct ksz_device *dev, u16 addr, u8 *mac_addr,
 	ksz_write16(dev, regs[REG_IND_CTRL_0], ctrl_addr);
 
 	ret = ksz8_valid_dyn_entry(dev, &data);
-	if (ret == -EAGAIN) {
-		if (addr == 0)
-			*entries = 0;
-		goto unlock_alu;
-	} else if (ret == -ENXIO) {
+	if (ret == -ENXIO) {
 		*entries = 0;
 		goto unlock_alu;
 	}
 
+	if (ret)
+		goto unlock_alu;
+
 	ksz_read64(dev, regs[REG_IND_DATA_HI], &buf);
 	data_hi = (u32)(buf >> 32);
 	data_lo = (u32)buf;
-- 
2.39.2