diff options
| author | Egil Hjelmeland <privat@egil-hjelmeland.no> | 2017-07-30 19:58:54 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-07-30 19:23:29 -0700 |
| commit | ab78acb152e3f0ded13a13fd27df46448d34a4b7 (patch) | |
| tree | c667fd14e68af053ab56517cad99a9fed7204187 /drivers/net/dsa/lan9303_mdio.c | |
| parent | d329ac88eb217fef1516a1dcfda27b7f5a8eb07b (diff) | |
net: dsa: lan9303: Multiply by 4 to get MDIO register
lan9303_mdio_write()/_read() must multiply register number by 4 to get
offset.
Added some commments to the register definitions.
Signed-off-by: Egil Hjelmeland <privat@egil-hjelmeland.no>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/dsa/lan9303_mdio.c')
| -rw-r--r-- | drivers/net/dsa/lan9303_mdio.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/dsa/lan9303_mdio.c b/drivers/net/dsa/lan9303_mdio.c index 93c36c0541cf..2db7970fc88c 100644 --- a/drivers/net/dsa/lan9303_mdio.c +++ b/drivers/net/dsa/lan9303_mdio.c @@ -40,6 +40,7 @@ static int lan9303_mdio_write(void *ctx, uint32_t reg, uint32_t val) { struct lan9303_mdio *sw_dev = (struct lan9303_mdio *)ctx; + reg <<= 2; /* reg num to offset */ mutex_lock(&sw_dev->device->bus->mdio_lock); lan9303_mdio_real_write(sw_dev->device, reg, val & 0xffff); lan9303_mdio_real_write(sw_dev->device, reg + 2, (val >> 16) & 0xffff); @@ -57,6 +58,7 @@ static int lan9303_mdio_read(void *ctx, uint32_t reg, uint32_t *val) { struct lan9303_mdio *sw_dev = (struct lan9303_mdio *)ctx; + reg <<= 2; /* reg num to offset */ mutex_lock(&sw_dev->device->bus->mdio_lock); *val = lan9303_mdio_real_read(sw_dev->device, reg); *val |= (lan9303_mdio_real_read(sw_dev->device, reg + 2) << 16); |