[PATCH net] net: stmmac: dwmac-rk: Ensure clk_phy doesn't contain invalid address

[Russell King (Oracle)]

On Thu, Sep 04, 2025 at 11:34:43AM +0100, Simon Horman wrote:
> Thanks, and sorry for my early confusion about applying this patch.
> 
> I agree that the bug you point out is addressed by this patch.
> Although I wonder if it is cleaner not to set bsp_priv->clk_phy
> unless there is no error, rather than setting it then resetting
> it if there is an error.

+1 !

> More importantly, I wonder if there is another bug: does clk_set_rate need
> to be called in the case where there is no error and bsp_priv->integrated_phy
> is false?

I think there's another issue:

static int rk_gmac_clk_init(struct plat_stmmacenet_data *plat)
{
...
        if (plat->phy_node) {
                bsp_priv->clk_phy = of_clk_get(plat->phy_node, 0);
...

static void rk_gmac_remove(struct platform_device *pdev)
{
...
        if (priv->plat->phy_node && bsp_priv->integrated_phy)
                clk_put(bsp_priv->clk_phy);

So if bsp_priv->integrated_phy is false, then we get the clock but
don't put it.

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