From: Rob Clark <robdcl...@chromium.org>

Annotate dev_pm_qos_mtx to teach lockdep to scream about allocations
that could trigger reclaim under dev_pm_qos_mtx.

Signed-off-by: Rob Clark <robdcl...@chromium.org>
---
 drivers/base/power/qos.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/base/power/qos.c b/drivers/base/power/qos.c
index 5ec06585b6d1..63cb1086f195 100644
--- a/drivers/base/power/qos.c
+++ b/drivers/base/power/qos.c
@@ -1017,3 +1017,14 @@ void dev_pm_qos_hide_latency_tolerance(struct device 
*dev)
        pm_runtime_put(dev);
 }
 EXPORT_SYMBOL_GPL(dev_pm_qos_hide_latency_tolerance);
+
+static int __init dev_pm_qos_init(void)
+{
+       /* Teach lockdep about lock ordering wrt. shrinker: */
+       fs_reclaim_acquire(GFP_KERNEL);
+       might_lock(&dev_pm_qos_mtx);
+       fs_reclaim_release(GFP_KERNEL);
+
+       return 0;
+}
+early_initcall(dev_pm_qos_init);
-- 
2.41.0

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