linux-kernel - Re: [PATCH] iommu/sun50i: check return value of of_find_device_by_node() in sun50i_iommu_of

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Message-ID: <20201029092516.rhhajxzzkwsyvtt5@gilmour.lan>
Date:   Thu, 29 Oct 2020 10:25:16 +0100
From:   Maxime Ripard <maxime@...no.tech>
To:     Yu Kuai <yukuai3@...wei.com>
Cc:     joro@...tes.org, wens@...e.org, iommu@...ts.linux-foundation.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        yi.zhang@...wei.com
Subject: Re: [PATCH] iommu/sun50i: check return value of
 of_find_device_by_node() in sun50i_iommu_of_xlate()

On Thu, Oct 29, 2020 at 05:22:44PM +0800, Yu Kuai wrote:
> If of_find_device_by_node() failed in sun50i_iommu_of_xlate(), null
> pointer dereference will be triggered. Thus return error code if
> of_find_device_by_node() failed.
> 
> Fixes: 4100b8c229b3("iommu: Add Allwinner H6 IOMMU driver")
> Signed-off-by: Yu Kuai <yukuai3@...wei.com>

Acked-by: Maxime Ripard <mripard@...nel.org>

Thanks!
Maxime

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