From 85996f11032593390ca727f6634f8bacae2a983c Mon Sep 17 00:00:00 2001 From: Ruizhe Zhou Date: Thu, 3 Sep 2026 16:43:37 +0800 Subject: [PATCH] net: pch_gbe: Remove obsolete 32-bit DMA mask fallback The DMA API guarantees support for masks of 32 bits or wider and explicitly identifies retrying a 32-bit mask after a 64-bit request as incorrect: https://docs.kernel.org/core-api/dma-api-howto.html#dma-addressing-capabilities Remove the obsolete fallback while retaining the error check so that a genuine DMA setup failure is still reported and aborts initialization. Signed-off-by: Ruizhe Zhou Link: https://patch.msgid.link/20260903084339.870562-13-zhouruizhe@resnics.com Signed-off-by: Jakub Kicinski --- drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c b/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c index 88c5c52e0e38..ba3d10f9aec6 100644 --- a/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c +++ b/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c @@ -2504,12 +2504,10 @@ static int pch_gbe_probe(struct pci_dev *pdev, if (ret) return ret; - if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64))) { - ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); - if (ret) { - dev_err(&pdev->dev, "ERR: No usable DMA configuration, aborting\n"); - return ret; - } + ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); + if (ret) { + dev_err(&pdev->dev, "ERR: No usable DMA configuration, aborting\n"); + return ret; } ret = pcim_iomap_regions(pdev, 1 << PCH_GBE_PCI_BAR, pci_name(pdev));