Commit cc973aec authored by Hauke Mehrtens's avatar Hauke Mehrtens Committed by David S. Miller

MIPS: lantiq: Do not enable IRQs in dma open

When a DMA channel is opened the IRQ should not get activated
automatically, this allows it to pull data out manually without the help
of interrupts. This is needed for a workaround in the vrx200 Ethernet
driver.
Signed-off-by: default avatarHauke Mehrtens <hauke@hauke-m.de>
Acked-by: default avatarPaul Burton <paul.burton@mips.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent aaf92530
......@@ -106,7 +106,6 @@ ltq_dma_open(struct ltq_dma_channel *ch)
spin_lock_irqsave(&ltq_dma_lock, flag);
ltq_dma_w32(ch->nr, LTQ_DMA_CS);
ltq_dma_w32_mask(0, DMA_CHAN_ON, LTQ_DMA_CCTRL);
ltq_dma_w32_mask(0, 1 << ch->nr, LTQ_DMA_IRNEN);
spin_unlock_irqrestore(&ltq_dma_lock, flag);
}
EXPORT_SYMBOL_GPL(ltq_dma_open);
......
......@@ -432,6 +432,7 @@ ltq_etop_open(struct net_device *dev)
if (!IS_TX(i) && (!IS_RX(i)))
continue;
ltq_dma_open(&ch->dma);
ltq_dma_enable_irq(&ch->dma);
napi_enable(&ch->napi);
}
phy_start(dev->phydev);
......
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