[PATCH net-next v2 3/5] net: dsa: microchip: remove ksz_port:on variable

From: Oleksij Rempel
Date: Fri May 26 2023 - 03:35:40 EST


The only place where this variable would be set to false is the
ksz8_config_cpu_port() function. But it is done in a bogus way:

for (i = 0; i < dev->phy_port_cnt; i++) {
if (i == dev->phy_port_cnt) <--- will be never executed.
break;
p->on = 1;

So, we never have a situation where p->on = 0. In this case, we can just
remove it.

Signed-off-by: Oleksij Rempel <o.rempel@xxxxxxxxxxxxxx>
Reviewed-by: Andrew Lunn <andrew@xxxxxxx>
---
drivers/net/dsa/microchip/ksz8795.c | 20 +-------------------
drivers/net/dsa/microchip/ksz_common.h | 1 -
2 files changed, 1 insertion(+), 20 deletions(-)

diff --git a/drivers/net/dsa/microchip/ksz8795.c b/drivers/net/dsa/microchip/ksz8795.c
index d2f7fa3fbd27..84d502589f8e 100644
--- a/drivers/net/dsa/microchip/ksz8795.c
+++ b/drivers/net/dsa/microchip/ksz8795.c
@@ -941,7 +941,6 @@ void ksz8_flush_dyn_mac_table(struct ksz_device *dev, int port)
{
u8 learn[DSA_MAX_PORTS];
int first, index, cnt;
- struct ksz_port *p;
const u16 *regs;

regs = dev->info->regs;
@@ -955,9 +954,6 @@ void ksz8_flush_dyn_mac_table(struct ksz_device *dev, int port)
cnt = dev->info->port_cnt;
}
for (index = first; index < cnt; index++) {
- p = &dev->ports[index];
- if (!p->on)
- continue;
ksz_pread8(dev, index, regs[P_STP_CTRL], &learn[index]);
if (!(learn[index] & PORT_LEARN_DISABLE))
ksz_pwrite8(dev, index, regs[P_STP_CTRL],
@@ -965,9 +961,6 @@ void ksz8_flush_dyn_mac_table(struct ksz_device *dev, int port)
}
ksz_cfg(dev, S_FLUSH_TABLE_CTRL, SW_FLUSH_DYN_MAC_TABLE, true);
for (index = first; index < cnt; index++) {
- p = &dev->ports[index];
- if (!p->on)
- continue;
if (!(learn[index] & PORT_LEARN_DISABLE))
ksz_pwrite8(dev, index, regs[P_STP_CTRL], learn[index]);
}
@@ -1338,25 +1331,14 @@ void ksz8_config_cpu_port(struct dsa_switch *ds)

ksz_cfg(dev, regs[S_TAIL_TAG_CTRL], masks[SW_TAIL_TAG_ENABLE], true);

- p = &dev->ports[dev->cpu_port];
- p->on = 1;
-
ksz8_port_setup(dev, dev->cpu_port, true);

for (i = 0; i < dev->phy_port_cnt; i++) {
- p = &dev->ports[i];
-
ksz_port_stp_state_set(ds, i, BR_STATE_DISABLED);
-
- /* Last port may be disabled. */
- if (i == dev->phy_port_cnt)
- break;
- p->on = 1;
}
for (i = 0; i < dev->phy_port_cnt; i++) {
p = &dev->ports[i];
- if (!p->on)
- continue;
+
if (!ksz_is_ksz88x3(dev)) {
ksz_pread8(dev, i, regs[P_REMOTE_STATUS], &remote);
if (remote & KSZ8_PORT_FIBER_MODE)
diff --git a/drivers/net/dsa/microchip/ksz_common.h b/drivers/net/dsa/microchip/ksz_common.h
index f45f5fe11bde..5aa58aac3e07 100644
--- a/drivers/net/dsa/microchip/ksz_common.h
+++ b/drivers/net/dsa/microchip/ksz_common.h
@@ -108,7 +108,6 @@ struct ksz_port {
int stp_state;
struct phy_device phydev;

- u32 on:1; /* port is not disabled by hardware */
u32 fiber:1; /* port is fiber */
u32 force:1;
u32 read:1; /* read MIB counters in background */
--
2.39.2