[PATCH net-next 03/14] net: systemport: Remove obsolete 32-bit DMA mask fallback
From: Ruizhe Zhou <hidden>
Date: 2026-09-03 08:44:57
Also in:
lkml
Subsystem:
broadcom systemport ethernet driver, networking drivers, the rest · Maintainers:
Florian Fainelli, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
The DMA API guarantees support for masks of 32 bits or wider and explicitly identifies retrying a 32-bit mask after a wider 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 <redacted> --- drivers/net/ethernet/broadcom/bcmsysport.c | 2 -- 1 file changed, 2 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/bcmsysport.c b/drivers/net/ethernet/broadcom/bcmsysport.c
index 4d06c6ba6641..4f0ec136b606 100644
--- a/drivers/net/ethernet/broadcom/bcmsysport.c
+++ b/drivers/net/ethernet/broadcom/bcmsysport.c@@ -2453,8 +2453,6 @@ static int bcm_sysport_probe(struct platform_device *pdev) return -EINVAL; ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(40)); - if (ret) - ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); if (ret) { dev_err(&pdev->dev, "unable to set DMA mask: %d\n", ret); return ret;
--
2.27.0