lkml.org 
[lkml]   [2022]   [Jan]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [PATCH] dmaengine: altera-msgdma: Remove useless DMA-32 fallback configuration
From
On 1/15/22 08:40, Christophe JAILLET wrote:
> As stated in [1], dma_set_mask() with a 64-bit mask never fails if
> dev->dma_mask is non-NULL.
> So, if it fails, the 32 bits case will also fail for the same reason.
>
> Simplify code and remove some dead code accordingly.
>
> [1]: https://lore.kernel.org/linux-kernel/YL3vSPK5DXTNvgdx@infradead.org/#t
>
> Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>

Reviewed-by: Stefan Roese <sr@denx.de>

Thanks,
Stefan

> ---
> drivers/dma/altera-msgdma.c | 4 +---
> 1 file changed, 1 insertion(+), 3 deletions(-)
>
> diff --git a/drivers/dma/altera-msgdma.c b/drivers/dma/altera-msgdma.c
> index f5b885d69cd3..6f56dfd375e3 100644
> --- a/drivers/dma/altera-msgdma.c
> +++ b/drivers/dma/altera-msgdma.c
> @@ -891,9 +891,7 @@ static int msgdma_probe(struct platform_device *pdev)
> ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
> if (ret) {
> dev_warn(&pdev->dev, "unable to set coherent mask to 64");
> - ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
> - if (ret)
> - goto fail;
> + goto fail;
> }
>
> msgdma_reset(mdev);
>

Viele Grüße,
Stefan Roese

--
DENX Software Engineering GmbH, Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-51 Fax: (+49)-8142-66989-80 Email: sr@denx.de

\
 
 \ /
  Last update: 2022-01-17 07:05    [W:0.092 / U:1.332 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site