| Message ID | 03c66fe5c2a81dbb29349ebf9af631e5ea216ec4.1642232675.git.christophe.jaillet@wanadoo.fr (mailing list archive) |
|---|---|
| State | Accepted |
| Delegated to: | Jason Gunthorpe |
| Headers | show |
| Series | [v2] IB/mthca: Remove useless DMA-32 fallback configuration | expand |
On Sat, Jan 15, 2022 at 08:45:05AM +0100, 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> > --- > v2: Update link to use lore instead of lklm > --- > drivers/infiniband/hw/mthca/mthca_main.c | 8 ++------ > 1 file changed, 2 insertions(+), 6 deletions(-) Applied to for-next, thanks Jason
diff --git a/drivers/infiniband/hw/mthca/mthca_main.c b/drivers/infiniband/hw/mthca/mthca_main.c index f507c4cd46d3..b54bc8865dae 100644 --- a/drivers/infiniband/hw/mthca/mthca_main.c +++ b/drivers/infiniband/hw/mthca/mthca_main.c @@ -939,12 +939,8 @@ static int __mthca_init_one(struct pci_dev *pdev, int hca_type) err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); if (err) { - dev_warn(&pdev->dev, "Warning: couldn't set 64-bit PCI DMA mask.\n"); - err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); - if (err) { - dev_err(&pdev->dev, "Can't set PCI DMA mask, aborting.\n"); - goto err_free_res; - } + dev_err(&pdev->dev, "Can't set PCI DMA mask, aborting.\n"); + goto err_free_res; } /* We can handle large RDMA requests, so allow larger segments. */
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> --- v2: Update link to use lore instead of lklm --- drivers/infiniband/hw/mthca/mthca_main.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-)