net: stmmac: Do not request stmmaceth clock

The stmmaceth clock is specified by the slave_bus and apb_pclk clocks in
the device tree bindings for snps,dwc-qos-ethernet-4.10 compatible nodes
of this IP.

The subdrivers for these bindings will be requesting the stmmac clock
correctly at a later point, so there is no need to request it here and
cause an error message to be printed to the kernel log.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c

@@ -521,13 +521,15 @@ stmmac_probe_config_dt(struct platform_device *pdev, const char **mac)
 	}
 
 	/* clock setup */
-	plat->stmmac_clk = devm_clk_get(&pdev->dev,
-					STMMAC_RESOURCE_NAME);
-	if (IS_ERR(plat->stmmac_clk)) {
-		dev_warn(&pdev->dev, "Cannot get CSR clock\n");
-		plat->stmmac_clk = NULL;
+	if (!of_device_is_compatible(np, "snps,dwc-qos-ethernet-4.10")) {
+		plat->stmmac_clk = devm_clk_get(&pdev->dev,
+						STMMAC_RESOURCE_NAME);
+		if (IS_ERR(plat->stmmac_clk)) {
+			dev_warn(&pdev->dev, "Cannot get CSR clock\n");
+			plat->stmmac_clk = NULL;
+		}
+		clk_prepare_enable(plat->stmmac_clk);
 	}
-	clk_prepare_enable(plat->stmmac_clk);
 
 	plat->pclk = devm_clk_get(&pdev->dev, "pclk");
 	if (IS_ERR(plat->pclk)) {