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rtw88: pci: release tx skbs DMAed when stop

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Interrupt is disabled to stop PCI, which means the skbs
queued for each TX ring will not be released via DMA
interrupt. To avoid those skbs remained being left in
the skb queue until PCI has been removed, driver needs
to release skbs by itself.

Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Tested-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Yan-Hsuan Chuang 2019-09-16 15:03:35 +08:00 • committed by Kalle Valo
parent dc579ca5cf
commit 0e41edcdfe
1 changed files with 12 additions and 0 deletions
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12
drivers/net/wireless/realtek/rtw88/pci.c
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@ -500,6 +500,17 @@ static void rtw_pci_dma_reset(struct rtw_dev *rtwdev, struct rtw_pci *rtwpci)
rtwpci->rx_tag = 0;
}
static void rtw_pci_dma_release(struct rtw_dev *rtwdev, struct rtw_pci *rtwpci)
{
struct rtw_pci_tx_ring *tx_ring;
u8 queue;
for (queue = 0; queue < RTK_MAX_TX_QUEUE_NUM; queue++) {
tx_ring = &rtwpci->tx_rings[queue];
rtw_pci_free_tx_ring_skbs(rtwdev, tx_ring);
}
}
static int rtw_pci_start(struct rtw_dev *rtwdev)
{
struct rtw_pci *rtwpci = (struct rtw_pci *)rtwdev->priv;
@ -521,6 +532,7 @@ static void rtw_pci_stop(struct rtw_dev *rtwdev)
spin_lock_irqsave(&rtwpci->irq_lock, flags);
rtw_pci_disable_interrupt(rtwdev, rtwpci);
rtw_pci_dma_release(rtwdev, rtwpci);
spin_unlock_irqrestore(&rtwpci->irq_lock, flags);
}