>Hi all,
>
>Today's linux-next merge of the net-next tree got a conflict in:
>
> drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
>
>between commit:
>
> 00423969d806 ("Revert "net: stmmac: re-init rx buffers when mac resume
>back"")
>
>from the net tree and commits:
>
> bba2556efad6 ("net: stmmac: Enable RX via AF_XDP zero-copy")
> de0b90e52a11 ("net: stmmac: rearrange RX and TX desc init into per-queue
>basis")
>
>from the net-next tree.
>
>I fixed it up (see below) and can carry the fix as necessary. This
>is now fixed as far as linux-next is concerned, but any non trivial
>conflicts should be mentioned to your upstream maintainer when your tree
>is submitted for merging. You may also want to consider cooperating
>with the maintainer of the conflicting tree to minimise any particularly
>complex conflicts.
I check linux-next merge fix above and spotted an additional fix needed.
Please see below.
>+ /**
>+ * dma_recycle_rx_skbufs - recycle RX dma buffers
>+ * @priv: private structure
>+ * @queue: RX queue index
>+ */
>+ static void dma_recycle_rx_skbufs(struct stmmac_priv *priv, u32 queue)
>+ {
>+ struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
>+ int i;
>+
>+ for (i = 0; i < priv->dma_rx_size; i++) {
>+ struct stmmac_rx_buffer *buf = &rx_q->buf_pool[i];
>+
>+ if (buf->page) {
>+ page_pool_recycle_direct(rx_q->page_pool, buf-
>>page);
>+ buf->page = NULL;
>+ }
>+
>+ if (priv->sph && buf->sec_page) {
>+ page_pool_recycle_direct(rx_q->page_pool, buf-
>>sec_page);
>+ buf->sec_page = NULL;
>+ }
>+ }
>+ }
With https://git.kernel.org/netdev/net/c/00423969d806 that reverts
stmmac_reinit_rx_buffers(), then the above dma_recycle_rx_skbufs()
is no longer needed when net-next is sent for merge.
> -/**
> - * stmmac_reinit_rx_buffers - reinit the RX descriptor buffer.
> - * @priv: driver private structure
> - * Description: this function is called to re-allocate a receive buffer, perform
> - * the DMA mapping and init the descriptor.
> - */
> -static void stmmac_reinit_rx_buffers(struct stmmac_priv *priv)
> -{
> - u32 rx_count = priv->plat->rx_queues_to_use;
> - u32 queue;
> -
> - for (queue = 0; queue < rx_count; queue++) {
> - struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
> -
> - if (rx_q->xsk_pool)
> - dma_free_rx_xskbufs(priv, queue);
dma_recycle_rx_skbufs() is only called here.
