4.4-stable review patch. If anyone has any objections, please let me know.
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From: Tsang-Shian Lin thlin@realtek.com
[ Upstream commit b7573a0a27bfa8270dea9b145448f6884b7cacc1 ]
Reset the driver current tx read/write index to zero when inactiveps nic out of sync with HW state. Wrong driver tx read/write index will cause Tx fail.
Signed-off-by: Tsang-Shian Lin thlin@realtek.com Signed-off-by: Ping-Ke Shih pkshih@realtek.com Signed-off-by: Larry Finger Larry.Finger@lwfinger.net Cc: Yan-Hsuan Chuang yhchuang@realtek.com Cc: Birming Chiu birming@realtek.com Cc: Shaofu shaofu@realtek.com Cc: Steven Ting steventing@realtek.com Signed-off-by: Kalle Valo kvalo@codeaurora.org Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/wireless/realtek/rtlwifi/pci.c | 7 +++++++ 1 file changed, 7 insertions(+)
--- a/drivers/net/wireless/realtek/rtlwifi/pci.c +++ b/drivers/net/wireless/realtek/rtlwifi/pci.c @@ -1572,7 +1572,14 @@ int rtl_pci_reset_trx_ring(struct ieee80 dev_kfree_skb_irq(skb); ring->idx = (ring->idx + 1) % ring->entries; } + + if (rtlpriv->use_new_trx_flow) { + rtlpci->tx_ring[i].cur_tx_rp = 0; + rtlpci->tx_ring[i].cur_tx_wp = 0; + } + ring->idx = 0; + ring->entries = rtlpci->txringcount[i]; } } spin_unlock_irqrestore(&rtlpriv->locks.irq_th_lock, flags);