diff options
| author |   Oleksij Rempel <o.rempel@pengutronix.de> | 2022-08-26 12:56:25 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2022-08-31 09:41:23 +0100 |
| commit | b5708dc6539d7630b4ddbd9f72a74280630770b8 (patch) | |
| tree | 0b2d5762fd950941d50b4af39c41e426c7b4711d | |
| parent | net: dsa: microchip: ksz8795: add error handling to ksz8_r/w_phy (diff) | |
| download | wireguard-linux-b5708dc6539d7630b4ddbd9f72a74280630770b8.tar.xz wireguard-linux-b5708dc6539d7630b4ddbd9f72a74280630770b8.zip | |
net: dsa: microchip: KSZ9893: do not write to not supported Output Clock Control Register
This issue was detected after adding regmap register access validation.
KSZ9893 compatible chips do not have "Output Clock Control Register
0x0103". So, avoid writing to it.
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/dsa/microchip/ksz9477.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/net/dsa/microchip/ksz9477.c b/drivers/net/dsa/microchip/ksz9477.c index f60ceaf25a66..fb9de6b447b1 100644 --- a/drivers/net/dsa/microchip/ksz9477.c +++ b/drivers/net/dsa/microchip/ksz9477.c @@ -193,6 +193,11 @@ int ksz9477_reset_switch(struct ksz_device *dev) ksz_write32(dev, REG_SW_PORT_INT_MASK__4, 0x7F); ksz_read32(dev, REG_SW_PORT_INT_STATUS__4, &data32); + /* KSZ9893 compatible chips do not support refclk configuration */ + if (dev->chip_id == KSZ9893_CHIP_ID || + dev->chip_id == KSZ8563_CHIP_ID) + return 0; + data8 = SW_ENABLE_REFCLKO; if (dev->synclko_disable) data8 = 0; |