linux-kernel - [PATCH 6/7] dsa: marvell: Correct value of max_frame

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Date:   Thu,  9 Mar 2023 13:54:20 +0100
From:   Lukasz Majewski <lukma@...x.de>
To:     Andrew Lunn <andrew@...n.ch>, Vladimir Oltean <olteanv@...il.com>,
        Russell King <linux@...linux.org.uk>
Cc:     Eric Dumazet <edumazet@...gle.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Alexander Duyck <alexander.duyck@...il.com>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Lukasz Majewski <lukma@...x.de>
Subject: [PATCH 6/7] dsa: marvell: Correct value of max_frame_size variable after validation

Running of the mv88e6xxx_validate_frame_size() function provided following
results:

[    1.585565] BUG: Marvell 88E6020 has differing max_frame_size: 1632 != 2048
[    1.592540] BUG: Marvell 88E6071 has differing max_frame_size: 1632 != 2048
		^------ Correct -> mv88e6250 family max frame size = 2048B

[    1.599507] BUG: Marvell 88E6085 has differing max_frame_size: 1632 != 1522
[    1.606476] BUG: Marvell 88E6165 has differing max_frame_size: 1522 != 1632
[    1.613445] BUG: Marvell 88E6190X has differing max_frame_size: 10240 != 1522
[    1.620590] BUG: Marvell 88E6191X has differing max_frame_size: 10240 != 1522
[    1.627730] BUG: Marvell 88E6193X has differing max_frame_size: 10240 != 1522
		^------ Needs to be fixed!!!

[    1.634871] BUG: Marvell 88E6220 has differing max_frame_size: 1632 != 2048
[    1.641842] BUG: Marvell 88E6250 has differing max_frame_size: 1632 != 2048
		^------ Correct -> mv88e6250 family max frame size = 2048B

This commit removes the validation function and provides correct values
for the max frame size field.

Signed-off-by: Lukasz Majewski <lukma@...x.de>
---
Changes for v5:
- New patch
---
 drivers/net/dsa/mv88e6xxx/chip.c | 32 +++++---------------------------
 1 file changed, 5 insertions(+), 27 deletions(-)

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index af14eb8a1bfd..dbb69787f4ef 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -5669,7 +5669,7 @@ static const struct mv88e6xxx_info mv88e6xxx_table[] = {
 		.num_internal_phys = 5,
 		.max_vid = 4095,
 		.max_sid = 63,
-		.max_frame_size = 1522,
+		.max_frame_size = 1632,
 		.port_base_addr = 0x10,
 		.phy_base_addr = 0x0,
 		.global1_addr = 0x1b,
@@ -5837,7 +5837,7 @@ static const struct mv88e6xxx_info mv88e6xxx_table[] = {
 		.num_internal_phys = 0,
 		.max_vid = 4095,
 		.max_sid = 63,
-		.max_frame_size = 1632,
+		.max_frame_size = 1522,
 		.port_base_addr = 0x10,
 		.phy_base_addr = 0x0,
 		.global1_addr = 0x1b,
@@ -6012,7 +6012,7 @@ static const struct mv88e6xxx_info mv88e6xxx_table[] = {
 		.num_gpio = 16,
 		.max_vid = 8191,
 		.max_sid = 63,
-		.max_frame_size = 1522,
+		.max_frame_size = 10240,
 		.port_base_addr = 0x0,
 		.phy_base_addr = 0x0,
 		.global1_addr = 0x1b,
@@ -6060,7 +6060,7 @@ static const struct mv88e6xxx_info mv88e6xxx_table[] = {
 		.num_internal_phys = 9,
 		.max_vid = 8191,
 		.max_sid = 63,
-		.max_frame_size = 1522,
+		.max_frame_size = 10240,
 		.port_base_addr = 0x0,
 		.phy_base_addr = 0x0,
 		.global1_addr = 0x1b,
@@ -6084,7 +6084,7 @@ static const struct mv88e6xxx_info mv88e6xxx_table[] = {
 		.num_internal_phys = 9,
 		.max_vid = 8191,
 		.max_sid = 63,
-		.max_frame_size = 1522,
+		.max_frame_size = 10240,
 		.port_base_addr = 0x0,
 		.phy_base_addr = 0x0,
 		.global1_addr = 0x1b,
@@ -7169,27 +7169,6 @@ static int __maybe_unused mv88e6xxx_resume(struct device *dev)
 
 static SIMPLE_DEV_PM_OPS(mv88e6xxx_pm_ops, mv88e6xxx_suspend, mv88e6xxx_resume);
 
-static void mv88e6xxx_validate_frame_size(void)
-{
-	int max;
-	int i;
-
-	for (i = 0; i < ARRAY_SIZE(mv88e6xxx_table); i++) {
-		/* same logic as in mv88e6xxx_get_max_mtu() */
-		if (mv88e6xxx_table[i].ops->port_set_jumbo_size)
-			max = 10240;
-		else if (mv88e6xxx_table[i].ops->set_max_frame_size)
-			max = 1632;
-		else
-			max = 1522;
-
-		if (mv88e6xxx_table[i].max_frame_size != max)
-			pr_err("BUG: %s has differing max_frame_size: %d != %d\n",
-			       mv88e6xxx_table[i].name, max,
-			       mv88e6xxx_table[i].max_frame_size);
-	}
-}
-
 static int mv88e6xxx_probe(struct mdio_device *mdiodev)
 {
 	struct dsa_mv88e6xxx_pdata *pdata = mdiodev->dev.platform_data;
@@ -7323,7 +7302,6 @@ static int mv88e6xxx_probe(struct mdio_device *mdiodev)
 	if (err)
 		goto out_mdio;
 
-	mv88e6xxx_validate_frame_size();
 	return 0;
 
 out_mdio:
-- 
2.20.1