[PATCH] net: ethernet: mtk_wed: increase WED v2 WDMA RESV_BUFF to 0x80

[Simon Horman]

On Wed, Aug 19, 2026 at 09:07:07PM +0800, Shiji Yang wrote:
> Change WDMA RESV_BUFF from 0x40 to 0x80 to avoid CDM TX FIFO overflow.
> Without this patch mt7986 and mt7981 may have WDMA TX hang issue. This
> patch was pulled from mtk-openwrt-feeds GPL open source project.
> 
> Link: https://github.com/mediatek/mtk-openwrt-feeds/commit/07c87502e854b68b48544d101b6fe17ec059b97b
> Signed-off-by: Shiji Yang <yangshiji66 at outlook.com>

As a bug fix for code present in the net tree, this should

1. Be targeted at the net tree

   Subject: [PATCH net] ...

2. Be CCed to stable

3. Have a fixes tag. Perhaps this one?

   Fixes: cf26df8833cc ("net: ethernet: mtk_eth_wed: add mtk_wed_configure_irq and mtk_wed_dma_{enable/disable}")

I'm unsure if the maintainers would like a repost because of this.
But at any rate, please keep it in mind for the future.

More information on the netdev development processes can be found here:
https://docs.kernel.org/process/maintainer-netdev.html

The above not withstanding, this looks good to me.

Reviewed-by: Simon Horman <horms at kernel.org>