| Message ID | 10c29cb45d14fb8ed89cf1308c4a9a7d445c52eb.1641717275.git.christophe.jaillet@wanadoo.fr (mailing list archive) |
|---|---|
| State | Accepted |
| Delegated to: | Jason Gunthorpe |
| Headers | show |
| Series | RDMA/pvrdma: Remove useless DMA-32 fallback configuration | expand |
On Sun, Jan 09, 2022 at 09:35:18AM +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://lkml.org/lkml/2021/6/7/398 > > Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> > --- > drivers/infiniband/hw/vmw_pvrdma/pvrdma_main.c | 10 ++++------ > 1 file changed, 4 insertions(+), 6 deletions(-) Applied to for-next, thanks Jason
diff --git a/drivers/infiniband/hw/vmw_pvrdma/pvrdma_main.c b/drivers/infiniband/hw/vmw_pvrdma/pvrdma_main.c index 105f3a155939..343288b02792 100644 --- a/drivers/infiniband/hw/vmw_pvrdma/pvrdma_main.c +++ b/drivers/infiniband/hw/vmw_pvrdma/pvrdma_main.c @@ -811,12 +811,10 @@ static int pvrdma_pci_probe(struct pci_dev *pdev, } /* Enable 64-Bit DMA */ - if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)) != 0) { - ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); - if (ret != 0) { - dev_err(&pdev->dev, "dma_set_mask failed\n"); - goto err_free_resource; - } + ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); + if (ret) { + dev_err(&pdev->dev, "dma_set_mask failed\n"); + goto err_free_resource; } dma_set_max_seg_size(&pdev->dev, UINT_MAX); pci_set_master(pdev);
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> --- drivers/infiniband/hw/vmw_pvrdma/pvrdma_main.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-)