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SubjectRe: [RFC PATCH net-next v5 07/25] net: dsa: qca8k: handle error with qca8k_rmw operation
> -static u32
> -qca8k_rmw(struct qca8k_priv *priv, u32 reg, u32 mask, u32 val)
> +static int
> +qca8k_rmw(struct qca8k_priv *priv, u32 reg, u32 mask, u32 write_val)
> {
> struct mii_bus *bus = priv->bus;
> u16 r1, r2, page;
> - u32 ret;
> + u32 val;
> + int ret;
>
> qca8k_split_addr(reg, &r1, &r2, &page);
>
> @@ -205,10 +206,15 @@ qca8k_rmw(struct qca8k_priv *priv, u32 reg, u32 mask, u32 val)
> if (ret < 0)
> goto exit;
>
> - ret = qca8k_mii_read32(bus, 0x10 | r2, r1);
> - ret &= ~mask;
> - ret |= val;
> - qca8k_mii_write32(bus, 0x10 | r2, r1, ret);
> + val = qca8k_mii_read32(bus, 0x10 | r2, r1);
> + if (val < 0) {
> + ret = val;
> + goto exit;
> + }
> +
> + val &= ~mask;
> + val |= write_val;
> + qca8k_mii_write32(bus, 0x10 | r2, r1, val);

Does qca8k_mii_write32() not return an code?

Seems like yet another function you could modify. But i suggest you
wait, get this patchset merged first.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>

Andrew

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