From 0ea3186ce03cfa9b1c5cb8677ac3ffcd19695cd7 Mon Sep 17 00:00:00 2001 From: Amitkumar Karwar Date: Fri, 30 Jan 2015 00:40:06 -0800 Subject: [PATCH] mwifiex: fix NULL packet downloading issues This patch makes sure that skb is freed after downloading NULL packet in error cases. Also, USB chipsets return -EINPROGRESS after downloading packets, they are freed in USB completion handler later. We will add missing change to set tx_lock_flag for USB which blocks further packets. Signed-off-by: Amitkumar Karwar Signed-off-by: Cathy Luo Signed-off-by: Kalle Valo --- drivers/net/wireless/mwifiex/sta_tx.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/mwifiex/sta_tx.c b/drivers/net/wireless/mwifiex/sta_tx.c index 1debe76017b1..5ce2d9a4f919 100644 --- a/drivers/net/wireless/mwifiex/sta_tx.c +++ b/drivers/net/wireless/mwifiex/sta_tx.c @@ -183,9 +183,13 @@ int mwifiex_send_null_packet(struct mwifiex_private *priv, u8 flags) } switch (ret) { case -EBUSY: - adapter->data_sent = true; - /* Fall through FAILURE handling */ + dev_kfree_skb_any(skb); + dev_err(adapter->dev, "%s: host_to_card failed: ret=%d\n", + __func__, ret); + adapter->dbg.num_tx_host_to_card_failure++; + break; case -1: + adapter->data_sent = false; dev_kfree_skb_any(skb); dev_err(adapter->dev, "%s: host_to_card failed: ret=%d\n", __func__, ret); @@ -198,6 +202,7 @@ int mwifiex_send_null_packet(struct mwifiex_private *priv, u8 flags) adapter->tx_lock_flag = true; break; case -EINPROGRESS: + adapter->tx_lock_flag = true; break; default: break; -- 2.30.2