| Message ID | dbecd4eb49a9586ee343b5473dda4b84c42112e9.1641742884.git.christophe.jaillet@wanadoo.fr (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | cfcfc8f5a54b2e125b3be857f630ffc37822df26 |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | net: enetc: Remove useless DMA-32 fallback configuration | expand |
Hello: This patch was applied to netdev/net-next.git (master) by Jakub Kicinski <kuba@kernel.org>: On Sun, 9 Jan 2022 16:41:43 +0100 you 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 > > [...] Here is the summary with links: - net: enetc: Remove useless DMA-32 fallback configuration https://git.kernel.org/netdev/net-next/c/cfcfc8f5a54b You are awesome, thank you!
diff --git a/drivers/net/ethernet/freescale/enetc/enetc.c b/drivers/net/ethernet/freescale/enetc/enetc.c index eacb41f86bdb..d6930a797c6c 100644 --- a/drivers/net/ethernet/freescale/enetc/enetc.c +++ b/drivers/net/ethernet/freescale/enetc/enetc.c @@ -2897,12 +2897,8 @@ int enetc_pci_probe(struct pci_dev *pdev, const char *name, int sizeof_priv) /* set up for high or low dma */ 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 configuration failed: 0x%x\n", err); - goto err_dma; - } + dev_err(&pdev->dev, "DMA configuration failed: 0x%x\n", err); + goto err_dma; } err = pci_request_mem_regions(pdev, name); diff --git a/drivers/net/ethernet/freescale/enetc/enetc_ptp.c b/drivers/net/ethernet/freescale/enetc/enetc_ptp.c index 36b4f51dd297..17c097cef7d4 100644 --- a/drivers/net/ethernet/freescale/enetc/enetc_ptp.c +++ b/drivers/net/ethernet/freescale/enetc/enetc_ptp.c @@ -42,15 +42,10 @@ static int enetc_ptp_probe(struct pci_dev *pdev, if (err) return dev_err_probe(&pdev->dev, err, "device enable failed\n"); - /* set up for high or low dma */ 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 configuration failed: 0x%x\n", err); - goto err_dma; - } + dev_err(&pdev->dev, "DMA configuration failed: 0x%x\n", err); + goto err_dma; } err = pci_request_mem_regions(pdev, KBUILD_MODNAME);
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/net/ethernet/freescale/enetc/enetc.c | 8 ++------ drivers/net/ethernet/freescale/enetc/enetc_ptp.c | 9 ++------- 2 files changed, 4 insertions(+), 13 deletions(-)