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iommu/apple-dart: fix device leak on of_xlate()

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commit a6eaa872c52a181ae9a290fd4e40c9df91166d7a upstream.

Make sure to drop the reference taken to the iommu platform device when
looking up its driver data during of_xlate().

Fixes: 46d1fb072e ("iommu/dart: Add DART iommu driver")
Cc: stable@vger.kernel.org	# 5.15
Cc: Sven Peter <sven@kernel.org>
Acked-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johan Hovold
2025-10-20 06:53:05 +02:00
committed by Greg Kroah-Hartman
parent b3e9fa847b
commit aa749c2daf
1 changed files with 2 additions and 0 deletions
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2
drivers/iommu/apple-dart.c
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@@ -758,6 +758,8 @@ static int apple_dart_of_xlate(struct device *dev, struct of_phandle_args *args)
struct apple_dart *cfg_dart;
int i, sid;
put_device(&iommu_pdev->dev);
if (args->args_count != 1)
return -EINVAL;
sid = args->args[0];