From 5b36c9b4a9872f7852b8ce7cffbfc2f6d6c25371 Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Sat, 23 Jul 2011 13:57:33 +0200 Subject: [PATCH] b43: read correct register on bcma bus. This causes an databus error on a Broadcom SoC using bcma. Signed-off-by: Hauke Mehrtens Signed-off-by: John W. Linville --- drivers/net/wireless/b43/dma.c | 20 +++++++++++++++++--- 1 file changed, 17 insertions(+), 3 deletions(-) diff --git a/drivers/net/wireless/b43/dma.c b/drivers/net/wireless/b43/dma.c index 83cba22ac6e8..481e534534eb 100644 --- a/drivers/net/wireless/b43/dma.c +++ b/drivers/net/wireless/b43/dma.c @@ -795,9 +795,23 @@ static u64 supported_dma_mask(struct b43_wldev *dev) u32 tmp; u16 mmio_base; - tmp = b43_read32(dev, SSB_TMSHIGH); - if (tmp & SSB_TMSHIGH_DMA64) - return DMA_BIT_MASK(64); + switch (dev->dev->bus_type) { +#ifdef CONFIG_B43_BCMA + case B43_BUS_BCMA: + tmp = bcma_aread32(dev->dev->bdev, BCMA_IOST); + if (tmp & BCMA_IOST_DMA64) + return DMA_BIT_MASK(64); + break; +#endif +#ifdef CONFIG_B43_SSB + case B43_BUS_SSB: + tmp = ssb_read32(dev->dev->sdev, SSB_TMSHIGH); + if (tmp & SSB_TMSHIGH_DMA64) + return DMA_BIT_MASK(64); + break; +#endif + } + mmio_base = b43_dmacontroller_base(0, 0); b43_write32(dev, mmio_base + B43_DMA32_TXCTL, B43_DMA32_TXADDREXT_MASK); tmp = b43_read32(dev, mmio_base + B43_DMA32_TXCTL); -- 2.20.1