forked from Minki/linux
brcmfmac: properly align buffers on certain platforms with 64 bit DMA
Systems with 64 bit DMA at least partially require buffers to be used for DMA to be 8-byte-aligned. One example is Amlogic Meson GX. Switching the MMC/SDIO driver for this platform to SG DMA mode resulted in problems due to unaligned buffers. Fortunately the brcmfmac driver has a global define for the alignment. Changing it to 8 fixed the issues with Meson GX. Suggested-by: Helmut Klein <hgkr.klein@gmail.com> Tested-by: Helmut Klein <hgkr.klein@gmail.com> Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
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@ -540,7 +540,11 @@ static int qcount[NUMPRIO];
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/* Limit on rounding up frames */
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static const uint max_roundup = 512;
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#ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
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#define ALIGNMENT 8
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#else
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#define ALIGNMENT 4
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#endif
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enum brcmf_sdio_frmtype {
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BRCMF_SDIO_FT_NORMAL,
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