Message ID | 20220823080231.2466017-9-o.rempel@pengutronix.de (mailing list archive) |
---|---|
State | Superseded |
Delegated to: | Netdev Maintainers |
Headers | show |
Series | net: dsa: microchip: add error handling and register access validation | expand |
diff --git a/drivers/net/dsa/microchip/ksz9477.c b/drivers/net/dsa/microchip/ksz9477.c index 313a17a989839..54514c9e6e003 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;
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> --- drivers/net/dsa/microchip/ksz9477.c | 5 +++++ 1 file changed, 5 insertions(+)