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| author | Heiner Kallweit <hkallweit1@gmail.com> | 2017-04-05 21:33:26 +0300 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2017-04-13 17:06:30 +0300 |
| commit | 6e84ab604bdedaa16239bd1c6e5fcb5660309f02 (patch) | |
| tree | 1ce2419b8cfea5cd3a9310467327e59cbf3ed1a9 /drivers/net/wireless/broadcom/brcm80211/brcmfmac | |
| parent | ecd7eb7c2bcf99f6c23d68ad56ce15949da848a1 (diff) | |
| download | linux-6e84ab604bdedaa16239bd1c6e5fcb5660309f02.tar.xz | |
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>
Diffstat (limited to 'drivers/net/wireless/broadcom/brcm80211/brcmfmac')
| -rw-r--r-- | drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c index a999f95062c7..fc64b8913aa6 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c @@ -540,7 +540,11 @@ static int qcount[NUMPRIO]; /* Limit on rounding up frames */ static const uint max_roundup = 512; +#ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT +#define ALIGNMENT 8 +#else #define ALIGNMENT 4 +#endif enum brcmf_sdio_frmtype { BRCMF_SDIO_FT_NORMAL, |