# Re: \[PATCH 2/6\] mmc: mmc\_spi: replace flush\_kernel\_dcache\_page with flush\_dcache\_page

- From: Ulf Hansson \<hidden\>
- Date: 2021-08-04 11:13:30 
- List: linux-arm-kernel
- Page: https://ratatoskr.run/linux-arm-kernel/2021/08/1467561
- Thread: https://ratatoskr.run/linux-arm-kernel/2021/07/1439128/t.md

```text
On Mon, 12 Jul 2021 at 08:11, Christoph Hellwig [ref] wrote:
>
> Pages passed to block drivers can be mapped page cache pages, so we
> must use flush_dcache_page here instead of the more limited
> flush_kernel_dcache_page that is intended for highmem pages only.
>
> Signed-off-by: Christoph Hellwig <hch@lst.de>

Apologies for the delay!

Acked-by: Ulf Hansson <redacted>

Kind regards
Uffe

> ---
>  drivers/mmc/host/mmc_spi.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/mmc/host/mmc_spi.c b/drivers/mmc/host/mmc_spi.c
> index 65c65bb5737f..3d28a3d3001b 100644
> --- a/drivers/mmc/host/mmc_spi.c
> +++ b/drivers/mmc/host/mmc_spi.c
> @@ -948,7 +948,7 @@ mmc_spi_data_do(struct mmc_spi_host *host, struct mmc_command *cmd,
>
>                 /* discard mappings */
>                 if (direction == DMA_FROM_DEVICE)
> -                       flush_kernel_dcache_page(sg_page(sg));
> +                       flush_dcache_page(sg_page(sg));
>                 kunmap(sg_page(sg));
>                 if (dma_dev)
>                         dma_unmap_page(dma_dev, dma_addr, PAGE_SIZE, dir);
> --
> 2.30.2
>

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```