Re: [PATCH v13 net-next 03/15] net: mvpp2: add CM3 SRAM memory map

On Thu, Feb 11, 2021 at 12:48:50PM +0200, stefanc@marvell.com wrote:

+static int mvpp2_get_sram(struct platform_device *pdev,
+			  struct mvpp2 *priv)
+{
+	struct resource *res;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 2);
+	if (!res) {
+		if (has_acpi_companion(&pdev->dev))
+			dev_warn(&pdev->dev, "ACPI is too old, Flow control not supported\n");
+		else
+			dev_warn(&pdev->dev, "DT is too old, Flow control not supported\n");
+		return 0;
+	}
+
+	priv->cm3_base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(priv->cm3_base))
+		return PTR_ERR(priv->cm3_base);
+
+	return 0;

You can clean this up to use:

	return PTR_ERR_OR_ZERO(priv->cm3_base);

+
+		/* Map CM3 SRAM */
+		err = mvpp2_get_sram(pdev, priv);
+		if (err)
+			dev_warn(&pdev->dev, "Fail to alloc CM3 SRAM\n");

It looks to me like mvpp2_get_sram() only fails if we are unable to
_map_ the CM3 SRAM. We are no longer allocating anything from it, so
I think this message needs to be updated.

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