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Message-Id: <20230712113145.12888-1-duminjie@vivo.com>
Date: Wed, 12 Jul 2023 19:31:45 +0800
From: Minjie Du <duminjie@...o.com>
To: Thierry Reding <thierry.reding@...il.com>,
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>,
linux-tegra@...r.kernel.org (open list:TEGRA IOMMU DRIVERS),
iommu@...ts.linux.dev (open list:IOMMU SUBSYSTEM),
linux-kernel@...r.kernel.org (open list)
Cc: opensource.kernel@...o.com, Minjie Du <duminjie@...o.com>
Subject: [PATCH v1] iommu: fix parameter check in tegra_smmu_debugfs_init()
Make IS_ERR() judge the debugfs_create_dir() function return
in tegra_smmu_debugfs_init()
Signed-off-by: Minjie Du <duminjie@...o.com>
---
drivers/iommu/tegra-smmu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iommu/tegra-smmu.c b/drivers/iommu/tegra-smmu.c
index 1cbf063cc..841e14cce 100644
--- a/drivers/iommu/tegra-smmu.c
+++ b/drivers/iommu/tegra-smmu.c
@@ -1056,7 +1056,7 @@ DEFINE_SHOW_ATTRIBUTE(tegra_smmu_clients);
static void tegra_smmu_debugfs_init(struct tegra_smmu *smmu)
{
smmu->debugfs = debugfs_create_dir("smmu", NULL);
- if (!smmu->debugfs)
+ if (IS_ERR(smmu->debugfs))
return;
debugfs_create_file("swgroups", S_IRUGO, smmu->debugfs, smmu,
--
2.39.0
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