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Subject[PATCH 4.19 045/101] vfio: platform: fix reference leak in vfio_platform_open
Date
From: Zhang Qilong <zhangqilong3@huawei.com>

[ Upstream commit bb742ad01961a3b9d1f9d19375487b879668b6b2 ]

pm_runtime_get_sync() will increment pm usage counter even it
failed. Forgetting to call pm_runtime_put will result in
reference leak in vfio_platform_open, so we should fix it.

Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Acked-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/vfio/platform/vfio_platform_common.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/vfio/platform/vfio_platform_common.c b/drivers/vfio/platform/vfio_platform_common.c
index c0cd824be2b76..460760d0becfe 100644
--- a/drivers/vfio/platform/vfio_platform_common.c
+++ b/drivers/vfio/platform/vfio_platform_common.c
@@ -273,7 +273,7 @@ static int vfio_platform_open(void *device_data)

ret = pm_runtime_get_sync(vdev->device);
if (ret < 0)
- goto err_pm;
+ goto err_rst;

ret = vfio_platform_call_reset(vdev, &extra_dbg);
if (ret && vdev->reset_required) {
@@ -290,7 +290,6 @@ static int vfio_platform_open(void *device_data)

err_rst:
pm_runtime_put(vdev->device);
-err_pm:
vfio_platform_irq_cleanup(vdev);
err_irq:
vfio_platform_regions_cleanup(vdev);
--
2.27.0


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