ath9k_htc: Silence undersized packet warnings

Some devices like TP-Link TL-WN722N produces this kind of messages
frequently.

kernel: ath: phy0: Short RX data len, dropping (dlen: 4)

This warning is useful for developers to recognize that the device
(Wi-Fi dongle or USB hub etc) is noisy but not for general users. So
this patch make this warning to debug message.

Reported-By: Denis <pro.denis@protonmail.com>
Ref: https://bugzilla.kernel.org/show_bug.cgi?id=207539
Fixes: cd486e627e67 ("ath9k_htc: Discard undersized packets")
Signed-off-by: Masashi Honma <masashi.honma@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200504214443.4485-1-masashi.honma@gmail.com

diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c b/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c
index 9cec5c216e1ffda7b8c7291104ed02d6620a18e5..118e5550b10c240a1e9e7376458c6d22193643a9 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c
+++ b/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c
@@ -999,9 +999,9 @@ static bool ath9k_rx_prepare(struct ath9k_htc_priv *priv,
         * which are not PHY_ERROR (short radar pulses have a length of 3)
         */
        if (unlikely(!rs_datalen || (rs_datalen < 10 && !is_phyerr))) {
-               ath_warn(common,
-                        "Short RX data len, dropping (dlen: %d)\n",
-                        rs_datalen);
+               ath_dbg(common, ANY,
+                       "Short RX data len, dropping (dlen: %d)\n",
+                       rs_datalen);
                goto rx_next;
        }