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i2c: ismt: Remove useless DMA-32 fallback configuration

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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://lkml.org/lkml/2021/6/7/398

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Seth Heasley <seth.heasley@intel.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
This commit is contained in:
Christophe JAILLET 2022-01-09 13:29:45 +01:00 committed by Wolfram Sang
parent 786f01d205
commit acaa07e5dd
1 changed files with 2 additions and 5 deletions
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7
drivers/i2c/busses/i2c-ismt.c
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@ -937,11 +937,8 @@ ismt_probe(struct pci_dev *pdev, const struct pci_device_id *id)
err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
if (err) {
err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
if (err) {
dev_err(&pdev->dev, "dma_set_mask fail\n");
return -ENODEV;
}
dev_err(&pdev->dev, "dma_set_mask fail\n");
return -ENODEV;
}
err = ismt_dev_init(priv);