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ath9k: fix dma direction for map/unmap in ath_rx_tasklet
For edma, we should use DMA_BIDIRECTIONAL, or else use DMA_FROM_DEVICE. This is found to address "BUG at arch/x86/mm/physaddr.c:5" as described here: http://lkml.org/lkml/2010/7/14/21 Signed-off-by: Ming Lei <tom.leiming@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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1 changed files with 2 additions and 2 deletions
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@ -844,9 +844,9 @@ int ath_rx_tasklet(struct ath_softc *sc, int flush, bool hp)
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int dma_type;
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if (edma)
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dma_type = DMA_FROM_DEVICE;
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else
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dma_type = DMA_BIDIRECTIONAL;
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else
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dma_type = DMA_FROM_DEVICE;
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qtype = hp ? ATH9K_RX_QUEUE_HP : ATH9K_RX_QUEUE_LP;
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spin_lock_bh(&sc->rx.rxbuflock);
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