diff options
| author | Oleksij Rempel <o.rempel@pengutronix.de> | 2023-04-04 12:18:42 +0200 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2023-04-06 11:34:45 +0200 |
| commit | 3c2e6b54e4e98f85bc9e17e20d6c702dd907afd3 (patch) | |
| tree | cc741c884f94714157bbaa35f3baa5d00f4d7b74 /drivers/net/dsa/microchip/ksz8795.c | |
| parent | c8e04374f9e1194a99c1c67980a21aa3f56a79d0 (diff) | |
net: dsa: microchip: Utilize error values in ksz8_w_sta_mac_table()
To handle potential read/write operation failures, update
ksz8_w_sta_mac_table() to make use of the return values provided by
read/write functions.
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Acked-by: Arun Ramadoss <arun.ramadoss@microchip.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'drivers/net/dsa/microchip/ksz8795.c')
| -rw-r--r-- | drivers/net/dsa/microchip/ksz8795.c | 33 |
1 files changed, 18 insertions, 15 deletions
diff --git a/drivers/net/dsa/microchip/ksz8795.c b/drivers/net/dsa/microchip/ksz8795.c index f394fb7d9ea1..23614a937cc3 100644 --- a/drivers/net/dsa/microchip/ksz8795.c +++ b/drivers/net/dsa/microchip/ksz8795.c @@ -358,19 +358,26 @@ unlock_alu: return ret; } -static void ksz8_w_table(struct ksz_device *dev, int table, u16 addr, u64 data) +static int ksz8_w_table(struct ksz_device *dev, int table, u16 addr, u64 data) { const u16 *regs; u16 ctrl_addr; + int ret; regs = dev->info->regs; ctrl_addr = IND_ACC_TABLE(table) | addr; mutex_lock(&dev->alu_mutex); - ksz_write64(dev, regs[REG_IND_DATA_HI], data); - ksz_write16(dev, regs[REG_IND_CTRL_0], ctrl_addr); + ret = ksz_write64(dev, regs[REG_IND_DATA_HI], data); + if (ret) + goto unlock_alu; + + ret = ksz_write16(dev, regs[REG_IND_CTRL_0], ctrl_addr); +unlock_alu: mutex_unlock(&dev->alu_mutex); + + return ret; } static int ksz8_valid_dyn_entry(struct ksz_device *dev, u8 *data) @@ -510,8 +517,8 @@ static int ksz8_r_sta_mac_table(struct ksz_device *dev, u16 addr, return 0; } -static void ksz8_w_sta_mac_table(struct ksz_device *dev, u16 addr, - struct alu_struct *alu) +static int ksz8_w_sta_mac_table(struct ksz_device *dev, u16 addr, + struct alu_struct *alu) { u32 data_hi, data_lo; const u8 *shifts; @@ -539,7 +546,8 @@ static void ksz8_w_sta_mac_table(struct ksz_device *dev, u16 addr, data_hi &= ~masks[STATIC_MAC_TABLE_OVERRIDE]; data = (u64)data_hi << 32 | data_lo; - ksz8_w_table(dev, TABLE_STATIC_MAC, addr, data); + + return ksz8_w_table(dev, TABLE_STATIC_MAC, addr, data); } static void ksz8_from_vlan(struct ksz_device *dev, u32 vlan, u8 *fid, @@ -1035,9 +1043,8 @@ static int ksz8_add_sta_mac(struct ksz_device *dev, int port, /* Need a way to map VID to FID. */ alu.fid = vid; } - ksz8_w_sta_mac_table(dev, index, &alu); - return 0; + return ksz8_w_sta_mac_table(dev, index, &alu); } static int ksz8_del_sta_mac(struct ksz_device *dev, int port, @@ -1061,16 +1068,14 @@ static int ksz8_del_sta_mac(struct ksz_device *dev, int port, /* no available entry */ if (index == dev->info->num_statics) - goto exit; + return 0; /* clear port */ alu.port_forward &= ~BIT(port); if (!alu.port_forward) alu.is_static = false; - ksz8_w_sta_mac_table(dev, index, &alu); -exit: - return 0; + return ksz8_w_sta_mac_table(dev, index, &alu); } int ksz8_mdb_add(struct ksz_device *dev, int port, @@ -1394,9 +1399,7 @@ int ksz8_enable_stp_addr(struct ksz_device *dev) alu.is_override = true; alu.port_forward = dev->info->cpu_ports; - ksz8_w_sta_mac_table(dev, 0, &alu); - - return 0; + return ksz8_w_sta_mac_table(dev, 0, &alu); } int ksz8_setup(struct dsa_switch *ds) |