From: Kalle Valo <kvalo@codeaurora.org>
To: Heiner Kallweit <hkallweit1@gmail.com>
Cc: Arend van Spriel <arend.vanspriel@broadcom.com>,
Franky Lin <franky.lin@broadcom.com>,
Hante Meuleman <hante.meuleman@broadcom.com>,
linux-wireless@vger.kernel.org,
brcm80211-dev-list.pdl@broadcom.com,
Helmut Klein <hgkr.klein@gmail.com>
Subject: Re: brcmfmac: properly align buffers on certain platforms with 64 bit DMA
Date: Thu, 13 Apr 2017 14:06:44 +0000 (UTC) [thread overview]
Message-ID: <20170413140644.45B2660D70@smtp.codeaurora.org> (raw)
In-Reply-To: <7120e0d6-8687-2622-7432-cb78dae3e122@gmail.com>
Heiner Kallweit <hkallweit1@gmail.com> wrote:
> 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>
Patch applied to wireless-drivers-next.git, thanks.
6e84ab604bde brcmfmac: properly align buffers on certain platforms with 64 bit DMA
--
https://patchwork.kernel.org/patch/9665425/
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
prev parent reply other threads:[~2017-04-13 14:06 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-05 18:33 [PATCH] brcmfmac: properly align buffers on certain platforms with 64 bit DMA Heiner Kallweit
2017-04-13 14:06 ` Kalle Valo [this message]
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