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Date: Tue, 25 Aug 2020 02:48:12 -0400 From: FelixCuioc <FelixCui-oc@...oxin.com> To: Joerg Roedel <joro@...tes.org>, <iommu@...ts.linux-foundation.org>, <linux-kernel@...r.kernel.org>, David Woodhouse <dwmw2@...radead.org>, "Lu Baolu" <baolu.lu@...ux.intel.com>, Dan Carpenter <dan.carpenter@...cle.com>, <kbuild@...ts.01.org> CC: <kbuild-all@...ts.01.org>, <CobeChen-oc@...oxin.com>, <RaymondPang-oc@...oxin.com> Subject: [PATCH 2/2] iommu/vt-d:Add support for probing ACPI device in RMRR In the probe_acpi_namespace_devices function,when the physical node of the acpi device is NULL,the unlock function is missing. Add mutex_unlock(&adev->physical_node_lock). Reported-by: Dan Carpenter <dan.carpenter@...cle.com> Signed-off-by: FelixCuioc <FelixCui-oc@...oxin.com> --- drivers/iommu/intel/iommu.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index b31f02f41c96..25e9853cba1b 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -4851,6 +4851,7 @@ static int __init probe_acpi_namespace_devices(void) if (pn_dev == NULL) { dev->bus->iommu_ops = &intel_iommu_ops; ret = iommu_probe_device(dev); + mutex_unlock(&adev->physical_node_lock); if (ret) { pr_err("acpi_device probe fail! ret:%d\n", ret); return ret; -- 2.17.1
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