* [PATCH] dmaengine: altera-msgdma: Remove useless DMA-32 fallback configuration
@ 2022-01-15 7:40 Christophe JAILLET
2022-01-17 6:03 ` Stefan Roese
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: Christophe JAILLET @ 2022-01-15 7:40 UTC (permalink / raw)
To: Olivier Dautricourt, Stefan Roese, Vinod Koul
Cc: linux-kernel, kernel-janitors, Christophe JAILLET, dmaengine
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>
---
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);
--
2.32.0
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH] dmaengine: altera-msgdma: Remove useless DMA-32 fallback configuration
2022-01-15 7:40 [PATCH] dmaengine: altera-msgdma: Remove useless DMA-32 fallback configuration Christophe JAILLET
@ 2022-01-17 6:03 ` Stefan Roese
2022-01-21 12:40 ` Olivier Dautricourt
2022-02-15 11:23 ` Vinod Koul
2 siblings, 0 replies; 4+ messages in thread
From: Stefan Roese @ 2022-01-17 6:03 UTC (permalink / raw)
To: Christophe JAILLET, Olivier Dautricourt, Vinod Koul
Cc: linux-kernel, kernel-janitors, dmaengine
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
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] dmaengine: altera-msgdma: Remove useless DMA-32 fallback configuration
2022-01-15 7:40 [PATCH] dmaengine: altera-msgdma: Remove useless DMA-32 fallback configuration Christophe JAILLET
2022-01-17 6:03 ` Stefan Roese
@ 2022-01-21 12:40 ` Olivier Dautricourt
2022-02-15 11:23 ` Vinod Koul
2 siblings, 0 replies; 4+ messages in thread
From: Olivier Dautricourt @ 2022-01-21 12:40 UTC (permalink / raw)
To: Christophe JAILLET
Cc: Stefan Roese, Vinod Koul, linux-kernel, kernel-janitors, dmaengine
The 01/15/2022 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>
Acked-by: Olivier Dautricourt <olivier.dautricourt@orolia.com>
> ---
> 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);
> --
> 2.32.0
>
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] dmaengine: altera-msgdma: Remove useless DMA-32 fallback configuration
2022-01-15 7:40 [PATCH] dmaengine: altera-msgdma: Remove useless DMA-32 fallback configuration Christophe JAILLET
2022-01-17 6:03 ` Stefan Roese
2022-01-21 12:40 ` Olivier Dautricourt
@ 2022-02-15 11:23 ` Vinod Koul
2 siblings, 0 replies; 4+ messages in thread
From: Vinod Koul @ 2022-02-15 11:23 UTC (permalink / raw)
To: Christophe JAILLET
Cc: Olivier Dautricourt, Stefan Roese, linux-kernel, kernel-janitors,
dmaengine
On 15-01-22, 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.
Applied, thanks
--
~Vinod
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2022-02-15 11:23 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2022-01-15 7:40 [PATCH] dmaengine: altera-msgdma: Remove useless DMA-32 fallback configuration Christophe JAILLET
2022-01-17 6:03 ` Stefan Roese
2022-01-21 12:40 ` Olivier Dautricourt
2022-02-15 11:23 ` Vinod Koul
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