In message: [PATCH v5.2&v5.3] mmc: cavium: Drop the aligned check for the dma
address
on 19/09/2019 Kevin Hao wrote:
> From: Kevin Hao <kexin....@windriver.com>
>
> In commit 73c1489f17e8 ("mmc: cavium: forbid unaligned DMA"), the codes
> are added to check the unaligned dma request. But at that time,
> we still don't do the dma map for the scatterlist yet. So it is
> meaningless to check the dma address. So drop of it.
>
> Signed-off-by: Kevin Hao <kexin....@windriver.com>
> ---
>
> Hi Bruce,
>
> This targets for standard/cn96xx branch.
Merged to v5.2 and linux-yocto-dev
Bruce
>
> drivers/mmc/host/cavium.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/mmc/host/cavium.c b/drivers/mmc/host/cavium.c
> index fc6464957df9..d724155d7eb6 100644
> --- a/drivers/mmc/host/cavium.c
> +++ b/drivers/mmc/host/cavium.c
> @@ -853,7 +853,7 @@ static void cvm_mmc_dma_request(struct mmc_host *mmc,
> /* unaligned multi-block DMA has problems, so forbid all unaligned */
> for (seg = 0; seg < mrq->data->sg_len; seg++) {
> struct scatterlist *sg = &mrq->data->sg[seg];
> - u64 align = (sg->offset | sg->length | sg->dma_address);
> + u64 align = (sg->offset | sg->length);
>
> if (!(align & 7))
> continue;
> --
> 2.14.4
>
--
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