linux-kernel - Re: 回复: [PATCH v1] iommu: fix parameter check in tegra_smmu_debugfs

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Date:   Wed, 12 Jul 2023 17:06:24 +0200
From:   Thierry Reding <thierry.reding@...il.com>
To:     杜敏杰 <duminjie@...o.com>
Cc:     Krishna Reddy <vdumpa@...dia.com>, Joerg Roedel <joro@...tes.org>,
        Will Deacon <will@...nel.org>,
        Robin Murphy <robin.murphy@....com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        "open list:TEGRA IOMMU DRIVERS" <linux-tegra@...r.kernel.org>,
        "open list:IOMMU SUBSYSTEM" <iommu@...ts.linux.dev>,
        open list <linux-kernel@...r.kernel.org>,
        "opensource.kernel" <opensource.kernel@...o.com>
Subject: Re: 回复: [PATCH v1] iommu: fix
 parameter check in tegra_smmu_debugfs_init()

On Wed, Jul 12, 2023 at 12:37:02PM +0000, 杜敏杰 wrote:
> Hi Thierry!
> 
> >I think we can just drop the error check altogether since
> >debugfs_create_file() will simply return early if smmu->debugfs is an error pointer.
> 
> So do you mean maybe delete the smmu->debugfs check is better?
> Maybe I can resubmit a new patch.

Yes, I think that would be preferable.

Thierry

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