diff options
| author | Christophe JAILLET <christophe.jaillet@wanadoo.fr> | 2022-01-02 00:28:51 +0300 |
|---|---|---|
| committer | Hans Verkuil <hverkuil-cisco@xs4all.nl> | 2022-12-07 19:58:46 +0300 |
| commit | f0ed939b6ab63f6ed9f9ff454f33997de10d8ae7 (patch) | |
| tree | f7e0619494fb32fe693f8ee7b8d4fe13765b5a05 /drivers/media/pci | |
| parent | 6e616668a1958886fb80d1282150c2be6cc51c4f (diff) | |
| download | linux-f0ed939b6ab63f6ed9f9ff454f33997de10d8ae7.tar.xz | |
media: pt3: Use dma_set_mask_and_coherent() and simplify code
Use dma_set_mask_and_coherent() instead of unrolling it with some
dma_set_mask()+dma_set_coherent_mask().
Moreover, as stated in [1], dma_set_mask() with a 64-bit mask will never
fail 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://lkml.org/lkml/2021/6/7/398
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: Akihiro Tsukada <tskd08@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Diffstat (limited to 'drivers/media/pci')
| -rw-r--r-- | drivers/media/pci/pt3/pt3.c | 16 |
1 files changed, 4 insertions, 12 deletions
diff --git a/drivers/media/pci/pt3/pt3.c b/drivers/media/pci/pt3/pt3.c index f6deac85962e..246f73b8a9e7 100644 --- a/drivers/media/pci/pt3/pt3.c +++ b/drivers/media/pci/pt3/pt3.c @@ -707,18 +707,10 @@ static int pt3_probe(struct pci_dev *pdev, const struct pci_device_id *ent) if (ret < 0) return ret; - ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)); - if (ret == 0) - dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64)); - else { - ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); - if (ret == 0) - dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); - else { - dev_err(&pdev->dev, "Failed to set DMA mask\n"); - return ret; - } - dev_info(&pdev->dev, "Use 32bit DMA\n"); + ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); + if (ret) { + dev_err(&pdev->dev, "Failed to set DMA mask\n"); + return ret; } pt3 = devm_kzalloc(&pdev->dev, sizeof(*pt3), GFP_KERNEL); |