From: Yang Yingliang <yangyingliang@huawei.com>
Date: Fri, 18 Nov 2022 09:36:04 +0000 (+0800)
Subject: iommu/amd: Fix pci device refcount leak in ppr_notifier()
X-Git-Tag: v6.6.17~5882^2^10~2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=6cf0981c2233f97d56938d9d61845383d6eb227c;p=platform%2Fkernel%2Flinux-rpi.git

iommu/amd: Fix pci device refcount leak in ppr_notifier()

As comment of pci_get_domain_bus_and_slot() says, it returns
a pci device with refcount increment, when finish using it,
the caller must decrement the reference count by calling
pci_dev_put(). So call it before returning from ppr_notifier()
to avoid refcount leak.

Fixes: daae2d25a477 ("iommu/amd: Don't copy GCR3 table root pointer")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20221118093604.216371-1-yangyingliang@huawei.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
---

diff --git a/drivers/iommu/amd/iommu_v2.c b/drivers/iommu/amd/iommu_v2.c
index 6a1f02c..9f7fab4 100644
--- a/drivers/iommu/amd/iommu_v2.c
+++ b/drivers/iommu/amd/iommu_v2.c
@@ -587,6 +587,7 @@ out_drop_state:
 	put_device_state(dev_state);
 
 out:
+	pci_dev_put(pdev);
 	return ret;
 }