linux-kernel - Re: [PATCH v2 2/3] iommu/tegra-smmu: Rework .probe_device and .attach

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Date:   Wed, 30 Sep 2020 08:11:52 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Nicolin Chen <nicoleotsuka@...il.com>, thierry.reding@...il.com,
        joro@...tes.org, krzk@...nel.org
Cc:     vdumpa@...dia.com, jonathanh@...dia.com,
        linux-tegra@...r.kernel.org, iommu@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/3] iommu/tegra-smmu: Rework .probe_device and
 .attach_dev

30.09.2020 03:30, Nicolin Chen пишет:
> +	/* An invalid mc pointer means mc and smmu drivers are not ready */
> +	if (IS_ERR_OR_NULL(mc))

tegra_get_memory_controller() doesn't return NULL.

> +		return ERR_PTR(-EPROBE_DEFER);