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drm/nouveau: fix reference count leak in nouveau_debugfs_strap_peek

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[ Upstream commit 8f29432417b11039ef960ab18987c7d61b2b5396 ]

nouveau_debugfs_strap_peek() calls pm_runtime_get_sync() that
increments the reference count. In case of failure, decrement the
ref count before returning the error.

Signed-off-by: Aditya Pakki <pakki001@umn.edu>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Aditya Pakki 2020-06-13 20:48:37 -05:00 committed by Greg Kroah-Hartman
parent 20e7c44560
commit db0a2e4857
1 changed files with 3 additions and 1 deletions
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4
drivers/gpu/drm/nouveau/nouveau_debugfs.c
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@ -54,8 +54,10 @@ nouveau_debugfs_strap_peek(struct seq_file *m, void *data)
int ret;
ret = pm_runtime_get_sync(drm->dev->dev);
if (ret < 0 && ret != -EACCES)
if (ret < 0 && ret != -EACCES) {
pm_runtime_put_autosuspend(drm->dev->dev);
return ret;
}
seq_printf(m, "0x%08x\n",
nvif_rd32(&drm->client.device.object, 0x101000));