diff options
| author | Guenter Roeck <linux@roeck-us.net> | 2015-03-27 04:36:31 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-03-29 23:23:51 +0300 |
| commit | 8d6d09e7a0149b60a8b504b21cafe5f4b304fd97 (patch) | |
| tree | 50e06344eb8769bf34f09351aa2059be1a630bfb /drivers/net/dsa | |
| parent | 366f0a0f98370d435de64978d623e6abf2630b01 (diff) | |
| download | linux-8d6d09e7a0149b60a8b504b21cafe5f4b304fd97.tar.xz | |
net: dsa: mv88e6xxx: Split mv88e6xxx_reg_read and mv88e6xxx_reg_write
Split mv88e6xxx_reg_read and mv88e6xxx_reg_write into two functions each,
one to acquire smi_mutex and one to get struct mii_bus *bus from
struct dsa_switch *ds and to call the actual read/write function.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/dsa')
| -rw-r--r-- | drivers/net/dsa/mv88e6xxx.c | 35 |
1 files changed, 26 insertions, 9 deletions
diff --git a/drivers/net/dsa/mv88e6xxx.c b/drivers/net/dsa/mv88e6xxx.c index 5da50b00fdf6..d8f13327a438 100644 --- a/drivers/net/dsa/mv88e6xxx.c +++ b/drivers/net/dsa/mv88e6xxx.c @@ -72,19 +72,16 @@ int __mv88e6xxx_reg_read(struct mii_bus *bus, int sw_addr, int addr, int reg) return ret & 0xffff; } -int mv88e6xxx_reg_read(struct dsa_switch *ds, int addr, int reg) +/* Must be called with SMI mutex held */ +static int _mv88e6xxx_reg_read(struct dsa_switch *ds, int addr, int reg) { - struct mv88e6xxx_priv_state *ps = ds_to_priv(ds); struct mii_bus *bus = dsa_host_dev_to_mii_bus(ds->master_dev); int ret; if (bus == NULL) return -EINVAL; - mutex_lock(&ps->smi_mutex); ret = __mv88e6xxx_reg_read(bus, ds->pd->sw_addr, addr, reg); - mutex_unlock(&ps->smi_mutex); - if (ret < 0) return ret; @@ -94,6 +91,18 @@ int mv88e6xxx_reg_read(struct dsa_switch *ds, int addr, int reg) return ret; } +int mv88e6xxx_reg_read(struct dsa_switch *ds, int addr, int reg) +{ + struct mv88e6xxx_priv_state *ps = ds_to_priv(ds); + int ret; + + mutex_lock(&ps->smi_mutex); + ret = _mv88e6xxx_reg_read(ds, addr, reg); + mutex_unlock(&ps->smi_mutex); + + return ret; +} + int __mv88e6xxx_reg_write(struct mii_bus *bus, int sw_addr, int addr, int reg, u16 val) { @@ -125,11 +134,11 @@ int __mv88e6xxx_reg_write(struct mii_bus *bus, int sw_addr, int addr, return 0; } -int mv88e6xxx_reg_write(struct dsa_switch *ds, int addr, int reg, u16 val) +/* Must be called with SMI mutex held */ +static int _mv88e6xxx_reg_write(struct dsa_switch *ds, int addr, int reg, + u16 val) { - struct mv88e6xxx_priv_state *ps = ds_to_priv(ds); struct mii_bus *bus = dsa_host_dev_to_mii_bus(ds->master_dev); - int ret; if (bus == NULL) return -EINVAL; @@ -137,8 +146,16 @@ int mv88e6xxx_reg_write(struct dsa_switch *ds, int addr, int reg, u16 val) dev_dbg(ds->master_dev, "-> addr: 0x%.2x reg: 0x%.2x val: 0x%.4x\n", addr, reg, val); + return __mv88e6xxx_reg_write(bus, ds->pd->sw_addr, addr, reg, val); +} + +int mv88e6xxx_reg_write(struct dsa_switch *ds, int addr, int reg, u16 val) +{ + struct mv88e6xxx_priv_state *ps = ds_to_priv(ds); + int ret; + mutex_lock(&ps->smi_mutex); - ret = __mv88e6xxx_reg_write(bus, ds->pd->sw_addr, addr, reg, val); + ret = _mv88e6xxx_reg_write(ds, addr, reg, val); mutex_unlock(&ps->smi_mutex); return ret; |