In message: [linux-yocto-dev v5.4 PATCH] mmc: cavium: Drop the aligned check
for the dma address
on 17/01/2020 Kevin Hao wrote:
> From: Kevin Hao <kexin....@windriver.com>
>
> In commit 6f30754ec148 ("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>
> Signed-off-by: Bruce Ashfield <bruce.ashfi...@gmail.com>
> ---
>
> Hi Bruce,
>
> This cherry-pick a fix from the linux-yocto v5.2 to v5.4. Please help me
> merge this into the following two branches:
> standard/cn96xx
> v5.4/standard/cn96xx
merged.
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 f6aadb90354d..cdb769c6ade6 100644
> --- a/drivers/mmc/host/cavium.c
> +++ b/drivers/mmc/host/cavium.c
> @@ -949,7 +949,7 @@ 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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