Re: [PATCH net v2] net: stmmac: set PP_FLAG_DMA_SYNC_DEV only if XDP is enabled

From: Jakub Kicinski
Date: Fri Oct 04 2024 - 10:09:22 EST


On Tue, 1 Oct 2024 11:22:32 +0100 Jon Hunter wrote:
> We have noticed a boot regression in both -next and mainline v6.12-rc1.
> Bisect is pointing to this commit. Reverting this commit fixes the problem.
>
> This boot regression is seen on our Tegra234 Jetson AGX Orin platform
> that uses the drivers/net/ethernet/stmicro/stmmac/dwmac-tegra.c driver.
> We are booting with NFS and although the network interface does come up,
> we fail to mount the rootfs via NFS.
>
> So it would appear that we need to set this flag for this device. Any
> thoughts?

This patch doesn't make sense to me. I'll send a revert shortly.