diff options
| author | Michal Vokáč <michal.vokac@ysoft.com> | 2019-09-26 11:59:17 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-10-29 11:19:32 +0300 |
| commit | 6d0da953bd8e7fc9e429309c99efd347eedad39b (patch) | |
| tree | 564c503ab47de1f6d04d32d10cc91db34f741c32 | |
| parent | 1cd24f5edab8cad6c9c3b32addd8a2a6de06226b (diff) | |
| download | linux-6d0da953bd8e7fc9e429309c99efd347eedad39b.tar.xz | |
net: dsa: qca8k: Use up to 7 ports for all operations
[ Upstream commit 7ae6d93c8f052b7a77ba56ed0f654e22a2876739 ]
The QCA8K family supports up to 7 ports. So use the existing
QCA8K_NUM_PORTS define to allocate the switch structure and limit all
operations with the switch ports.
This was not an issue until commit 0394a63acfe2 ("net: dsa: enable and
disable all ports") disabled all unused ports. Since the unused ports 7-11
are outside of the correct register range on this switch some registers
were rewritten with invalid content.
Fixes: 6b93fb46480a ("net-next: dsa: add new driver for qca8xxx family")
Fixes: a0c02161ecfc ("net: dsa: variable number of ports")
Fixes: 0394a63acfe2 ("net: dsa: enable and disable all ports")
Signed-off-by: Michal Vokáč <michal.vokac@ysoft.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/net/dsa/qca8k.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/dsa/qca8k.c b/drivers/net/dsa/qca8k.c index bdd8f2df6630..33232cc9fb04 100644 --- a/drivers/net/dsa/qca8k.c +++ b/drivers/net/dsa/qca8k.c @@ -543,7 +543,7 @@ qca8k_setup(struct dsa_switch *ds) BIT(0) << QCA8K_GLOBAL_FW_CTRL1_UC_DP_S); /* Setup connection between CPU port & user ports */ - for (i = 0; i < DSA_MAX_PORTS; i++) { + for (i = 0; i < QCA8K_NUM_PORTS; i++) { /* CPU port gets connected to all user ports of the switch */ if (dsa_is_cpu_port(ds, i)) { qca8k_rmw(priv, QCA8K_PORT_LOOKUP_CTRL(QCA8K_CPU_PORT), @@ -897,7 +897,7 @@ qca8k_sw_probe(struct mdio_device *mdiodev) if (id != QCA8K_ID_QCA8337) return -ENODEV; - priv->ds = dsa_switch_alloc(&mdiodev->dev, DSA_MAX_PORTS); + priv->ds = dsa_switch_alloc(&mdiodev->dev, QCA8K_NUM_PORTS); if (!priv->ds) return -ENOMEM; |