From 6f4432bae9f2d12fc1815b5e26cc07e69bcad0df Mon Sep 17 00:00:00 2001
From: Qiushi Wu <wu000273@umn.edu>
Date: Sun, 14 Jun 2020 05:31:06 +0200
Subject: [PATCH] media: sti: Fix reference count leaks
Git-commit: 6f4432bae9f2d12fc1815b5e26cc07e69bcad0df
Patch-mainline: v5.10-rc1
References: git-fixes

pm_runtime_get_sync() increments the runtime PM usage counter even
when it returns an error code, causing incorrect ref count if
pm_runtime_put_noidle() is not called in error handling paths.
Thus call pm_runtime_put_noidle() if pm_runtime_get_sync() fails.

Signed-off-by: Qiushi Wu <wu000273@umn.edu>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/media/platform/sti/hva/hva-hw.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/media/platform/sti/hva/hva-hw.c b/drivers/media/platform/sti/hva/hva-hw.c
index 8533d3bc6d5c..43f279e2a6a3 100644
--- a/drivers/media/platform/sti/hva/hva-hw.c
+++ b/drivers/media/platform/sti/hva/hva-hw.c
@@ -272,6 +272,7 @@ static unsigned long int hva_hw_get_ip_version(struct hva_dev *hva)
 
 	if (pm_runtime_get_sync(dev) < 0) {
 		dev_err(dev, "%s     failed to get pm_runtime\n", HVA_PREFIX);
+		pm_runtime_put_noidle(dev);
 		mutex_unlock(&hva->protect_mutex);
 		return -EFAULT;
 	}
@@ -553,6 +554,7 @@ void hva_hw_dump_regs(struct hva_dev *hva, struct seq_file *s)
 
 	if (pm_runtime_get_sync(dev) < 0) {
 		seq_puts(s, "Cannot wake up IP\n");
+		pm_runtime_put_noidle(dev);
 		mutex_unlock(&hva->protect_mutex);
 		return;
 	}
-- 
2.16.4