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| author | Qinglang Miao <miaoqinglang@huawei.com> | 2020-12-01 20:56:31 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-03-04 11:37:42 +0100 |
| commit | 0cdfdd1f03c2a6b22036cf8670278e6948472b7b (patch) | |
| tree | 16f41ec396ad0b40e8c63fe3d80bfa4f08307710 /drivers/gpu/drm/tegra/dc.c | |
| parent | cc1c1fe79551b4a9ebde1a59287133a5299b7260 (diff) | |
| download | kernel_replicant_linux-0cdfdd1f03c2a6b22036cf8670278e6948472b7b.tar.gz kernel_replicant_linux-0cdfdd1f03c2a6b22036cf8670278e6948472b7b.tar.bz2 kernel_replicant_linux-0cdfdd1f03c2a6b22036cf8670278e6948472b7b.zip | |
drm/tegra: Fix reference leak when pm_runtime_get_sync() fails
[ Upstream commit dcdfe2712b68f1e9dbf4f1a96ad59b80e5cc0ef7 ]
The PM reference count is not expected to be incremented on return in
these Tegra functions.
However, pm_runtime_get_sync() will increment the PM reference count
even on failure. Forgetting to put the reference again will result in
a leak.
Replace it with pm_runtime_resume_and_get() to keep the usage counter
balanced.
Fixes: fd67e9c6ed5a ("drm/tegra: Do not implement runtime PM")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Qinglang Miao <miaoqinglang@huawei.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/gpu/drm/tegra/dc.c')
| -rw-r--r-- | drivers/gpu/drm/tegra/dc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c index 424ad60b4f38..b2c8c68b7e26 100644 --- a/drivers/gpu/drm/tegra/dc.c +++ b/drivers/gpu/drm/tegra/dc.c @@ -2184,7 +2184,7 @@ static int tegra_dc_runtime_resume(struct host1x_client *client) struct device *dev = client->dev; int err; - err = pm_runtime_get_sync(dev); + err = pm_runtime_resume_and_get(dev); if (err < 0) { dev_err(dev, "failed to get runtime PM: %d\n", err); return err; |