From: Chin-Yen Lee Date: Thu, 19 Dec 2019 08:58:11 +0000 (+0800) Subject: rtw88: pci: reset dma when reset pci trx ring X-Git-Tag: microblaze-v5.7-rc1~165^2~11^2~44 X-Git-Url: http://git.monstr.eu/?a=commitdiff_plain;h=fd30e891e0bc68735b52d480d078959e5fb30e70;p=linux-2.6-microblaze.git rtw88: pci: reset dma when reset pci trx ring When PCI trx rings are reset, the DMA engine should also be reset. Otherswise, the rx_tag of rx flow is not synchronous to hw. Remove DMA reset when rtw_pci_start() as we added it in rtw_pci_setup(). Signed-off-by: Chin-Yen Lee Signed-off-by: Yan-Hsuan Chuang Reviewed-by: Chris Chiu Signed-off-by: Kalle Valo --- diff --git a/drivers/net/wireless/realtek/rtw88/pci.c b/drivers/net/wireless/realtek/rtw88/pci.c index 068f1bec88e6..c394df494c95 100644 --- a/drivers/net/wireless/realtek/rtw88/pci.c +++ b/drivers/net/wireless/realtek/rtw88/pci.c @@ -486,13 +486,6 @@ static void rtw_pci_disable_interrupt(struct rtw_dev *rtwdev, rtwpci->irq_enabled = false; } -static int rtw_pci_setup(struct rtw_dev *rtwdev) -{ - rtw_pci_reset_trx_ring(rtwdev); - - return 0; -} - static void rtw_pci_dma_reset(struct rtw_dev *rtwdev, struct rtw_pci *rtwpci) { /* reset dma and rx tag */ @@ -501,6 +494,16 @@ static void rtw_pci_dma_reset(struct rtw_dev *rtwdev, struct rtw_pci *rtwpci) rtwpci->rx_tag = 0; } +static int rtw_pci_setup(struct rtw_dev *rtwdev) +{ + struct rtw_pci *rtwpci = (struct rtw_pci *)rtwdev->priv; + + rtw_pci_reset_trx_ring(rtwdev); + rtw_pci_dma_reset(rtwdev, rtwpci); + + return 0; +} + static void rtw_pci_dma_release(struct rtw_dev *rtwdev, struct rtw_pci *rtwpci) { struct rtw_pci_tx_ring *tx_ring; @@ -518,8 +521,6 @@ static int rtw_pci_start(struct rtw_dev *rtwdev) struct rtw_pci *rtwpci = (struct rtw_pci *)rtwdev->priv; unsigned long flags; - rtw_pci_dma_reset(rtwdev, rtwpci); - spin_lock_irqsave(&rtwpci->irq_lock, flags); rtw_pci_enable_interrupt(rtwdev, rtwpci); spin_unlock_irqrestore(&rtwpci->irq_lock, flags);