From: Erik Stromdahl <erik.stromdahl@gmail.com>
To: kvalo@qca.qualcomm.com, linux-wireless@vger.kernel.org,
ath10k@lists.infradead.org
Cc: Erik Stromdahl <erik.stromdahl@gmail.com>
Subject: [PATCH] ath10k: fix return value check in wake_tx_q op
Date: Sun, 6 May 2018 15:25:00 +0200 [thread overview]
Message-ID: <20180506132500.16888-1-erik.stromdahl@gmail.com> (raw)
ath10k_mac_tx_push_txq returns either a postive integer (length) on
success or a negative error code on error.
The "if (ret) break;" statement will thus always break out of the loop
immediately after ath10k_mac_tx_push_txq has returned (making the loop
pointless).
A side effect of this fix is that we will iterate the queue until
ath10k_mac_tx_push_txq returns -ENOENT. This will make sure the queue is
not added back to ar->txqs when it is empty. This could potentially
improve performance somewhat (I have seen a small improvement with SDIO
devices).
Signed-off-by: Erik Stromdahl <erik.stromdahl@gmail.com>
---
drivers/net/wireless/ath/ath10k/mac.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c
index 3d7119ad7c7a..487a7a7380fd 100644
--- a/drivers/net/wireless/ath/ath10k/mac.c
+++ b/drivers/net/wireless/ath/ath10k/mac.c
@@ -4290,7 +4290,7 @@ static void ath10k_mac_op_wake_tx_queue(struct ieee80211_hw *hw,
while (ath10k_mac_tx_can_push(hw, f_txq) && max--) {
ret = ath10k_mac_tx_push_txq(hw, f_txq);
- if (ret)
+ if (ret < 0)
break;
}
if (ret != -ENOENT)
--
2.17.0
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next reply other threads:[~2018-05-06 13:26 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-06 13:25 Erik Stromdahl [this message]
2018-05-12 9:03 ` ath10k: fix return value check in wake_tx_q op Kalle Valo
[not found] ` <6dc00772b826410e930306891fd13ed9@euamsexm01f.eu.qualcomm.com>
[not found] ` <c77a1c0961f34ee68b7266444d2207f5@aptaiexm02e.ap.qualcomm.com>
2019-01-28 7:01 ` FW: [PATCH] " yiboz
2019-02-07 14:25 ` Kalle Valo
2019-02-25 4:40 ` Yibo Zhao
2019-03-04 1:56 ` Yibo Zhao
2019-03-11 6:44 ` Erik Stromdahl
2019-03-12 2:23 ` Yibo Zhao
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