kernel: delete Linux 5.4 config and patches

[openwrt/staging/chunkeey.git] / target / linux / layerscape / patches-5.4 / 701-net-0047-sdk_dpaa-update-comments-about-recycling-and-back-po.patch

diff --git a/target/linux/layerscape/patches-5.4/701-net-0047-sdk_dpaa-update-comments-about-recycling-and-back-po.patch b/target/linux/layerscape/patches-5.4/701-net-0047-sdk_dpaa-update-comments-about-recycling-and-back-po.patch
deleted file mode 100644 (file)
index a54dce9..0000000
--- a/target/linux/layerscape/patches-5.4/701-net-0047-sdk_dpaa-update-comments-about-recycling-and-back-po.patch
+++ /dev/null
@@ -1,67 +0,0 @@
-From 2d7b6e7daf076b63f461ce9c4ec6022ddc3d15bb Mon Sep 17 00:00:00 2001
-From: Camelia Groza <camelia.groza@nxp.com>
-Date: Mon, 15 Jan 2018 17:42:42 +0200
-Subject: [PATCH] sdk_dpaa: update comments about recycling and back-pointer
- storage
-
-Signed-off-by: Camelia Groza <camelia.groza@nxp.com>
----
- drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c | 18 ++++++++++++++++--
- 1 file changed, 16 insertions(+), 2 deletions(-)
-
---- a/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c
-+++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c
-@@ -121,6 +121,10 @@ static int _dpa_bp_add_8_bufs(const stru
-                       put_page(virt_to_head_page(new_buf));
-                       goto build_skb_failed;
-               }
-+
-+              /* Store the skb back-pointer before the start of the buffer.
-+               * Otherwise it will be overwritten by the FMan.
-+               */
-               DPA_WRITE_SKB_PTR(skb, skbh, new_buf, -1);
- 
-               addr = dma_map_single(dev, new_buf,
-@@ -344,7 +348,10 @@ bool dpa_buf_is_recyclable(struct sk_buf
-        * - buffer address aligned to cacheline bytes
-        * - offset of data from start of buffer no lower than a minimum value
-        * - offset of data from start of buffer no higher than a maximum value
-+       * - the skb back-pointer is stored safely
-        */
-+
-+      /* guarantee both the minimum size and the minimum data offset */
-       new = min(skb_end_pointer(skb) - min_size, skb->data - min_offset);
- 
-       /* left align to the nearest cacheline */
-@@ -694,6 +701,9 @@ int __hot skb_to_contig_fd(struct dpa_pr
-               dma_dir = DMA_BIDIRECTIONAL;
-               dma_map_size = dpa_bp->size;
- 
-+              /* Store the skb back-pointer before the start of the buffer.
-+               * Otherwise it will be overwritten by the FMan.
-+               */
-               DPA_WRITE_SKB_PTR(skb, skbh, buffer_start, -1);
-               *offset = skb_headroom(skb) - fd->offset;
-       } else
-@@ -711,7 +721,7 @@ int __hot skb_to_contig_fd(struct dpa_pr
- 
-               /* The buffer will be Tx-confirmed, but the TxConf cb must
-                * necessarily look at our Tx private data to retrieve the
--               * skbuff. (In short: can't use DPA_WRITE_SKB_PTR() here.)
-+               * skbuff. Store the back-pointer inside the buffer.
-                */
-               DPA_WRITE_SKB_PTR(skb, skbh, buffer_start, 0);
-       }
-@@ -975,7 +985,11 @@ int __hot skb_to_sg_fd(struct dpa_priv_s
-       fd->length20 = skb->len;
-       fd->offset = priv->tx_headroom;
- 
--      /* DMA map the SGT page */
-+      /* DMA map the SGT page
-+       *
-+       * It's safe to store the skb back-pointer inside the buffer since
-+       * S/G frames are non-recyclable.
-+       */
-       DPA_WRITE_SKB_PTR(skb, skbh, sgt_buf, 0);
-       addr = dma_map_single(dpa_bp->dev, sgt_buf,
-                             priv->tx_headroom + sgt_size,