[PATCH 19/19] staging: wfx: remove false positive warning

Jerome Pouiller
2020-05-15T08:34:47Z

When a station is removed, the driver check that all the Tx frames were
correctly sent. However, the station can be removed before all the Tx
frames were acknowledged and a false positive warning can be emitted.

The previous commit has added a trace when driver received an
acknowledge for a non-existent station. It appear that these events
are perfectly correlated and there is no leak.

Now, the subject is perfectly understood. Remove the warning. Just keep
a debug trace in case we have any doubt in the future.

In the past, the subject has already been discussed here:
https://lore.kernel.org/driverdev-devel/6287924.ghGFUMk3OD@pc-42/

Fixes: 4bbc6a3e7ad0 ("staging: wfx: make warning about pending frame less scary")
Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
---
drivers/staging/wfx/sta.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/wfx/sta.c b/drivers/staging/wfx/sta.c
index f448957c1a92..6015cd2c4d8a 100644
--- a/drivers/staging/wfx/sta.c
+++ b/drivers/staging/wfx/sta.c
@@ -441,8 +441,10 @@ int wfx_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif,

for (i = 0; i < ARRAY_SIZE(sta_priv->buffered); i++)
if (sta_priv->buffered[i])
- dev_warn(wvif->wdev->dev, "release station while %d pending frame on queue %d",
- sta_priv->buffered[i], i);
+ // Not an error if paired with trace in
+ // wfx_tx_update_sta()
+ dev_dbg(wvif->wdev->dev, "release station while %d pending frame on queue %d",
+ sta_priv->buffered[i], i);
// See note in wfx_sta_add()
if (!sta_priv->link_id)
return 0;
--
2.26.2