linux-kernel - Re: [Patch v7 1/4] memory: tegra: Add memory controller channels support

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Date:   Thu, 14 Apr 2022 00:17:06 +0300
From:   Dmitry Osipenko <dmitry.osipenko@...labora.com>
To:     Ashish Mhetre <amhetre@...dia.com>, digetx@...il.com,
        krzysztof.kozlowski@...aro.org, thierry.reding@...il.com,
        jonathanh@...dia.com, robh+dt@...nel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-tegra@...r.kernel.org, krzysztof.kozlowski+dt@...aro.org
Cc:     vdumpa@...dia.com, Snikam@...dia.com
Subject: Re: [Patch v7 1/4] memory: tegra: Add memory controller channels
 support


On 4/13/22 12:40, Ashish Mhetre wrote:
> +static int tegra186_mc_map_regs(struct tegra_mc *mc)
> +{
> +	struct platform_device *pdev = to_platform_device(mc->dev);
> +	int i;
> +
> +	mc->bcast_ch_regs = devm_platform_ioremap_resource_byname(pdev, "broadcast");
> +	if (IS_ERR(mc->bcast_ch_regs)) {
> +		if (PTR_ERR(mc->bcast_ch_regs) == -EINVAL) {
> +			dev_warn(&pdev->dev, "Broadcast channel is missing, please update your device-tree\n");

Set mc->bcast_ch_regs=NULL on error.