target/linux/generic/backport-5.15/702-v5.19-11-net-ethernet-mtk_eth_soc-wed-fix-sparse-endian-warni.patch

   1 From: Felix Fietkau <nbd@nbd.name>
   2 Date: Fri, 8 Apr 2022 10:59:45 +0200
   3 Subject: [PATCH] net: ethernet: mtk_eth_soc/wed: fix sparse endian warnings
   4
   5 Descriptor fields are little-endian
   6
   7 Fixes: 804775dfc288 ("net: ethernet: mtk_eth_soc: add support for Wireless Ethernet Dispatch (WED)")
   8 Reported-by: kernel test robot <lkp@intel.com>
   9 Signed-off-by: Felix Fietkau <nbd@nbd.name>
  10 Signed-off-by: David S. Miller <davem@davemloft.net>
  11 ---
  12
  13 --- a/drivers/net/ethernet/mediatek/mtk_wed.c
  14 +++ b/drivers/net/ethernet/mediatek/mtk_wed.c
  15 @@ -144,16 +144,17 @@ mtk_wed_buffer_alloc(struct mtk_wed_devi
  16
  17                 for (s = 0; s < MTK_WED_BUF_PER_PAGE; s++) {
  18                         u32 txd_size;
  19 +                       u32 ctrl;
  20
  21                         txd_size = dev->wlan.init_buf(buf, buf_phys, token++);
  22
  23 -                       desc->buf0 = buf_phys;
  24 -                       desc->buf1 = buf_phys + txd_size;
  25 -                       desc->ctrl = FIELD_PREP(MTK_WDMA_DESC_CTRL_LEN0,
  26 -                                               txd_size) |
  27 -                                    FIELD_PREP(MTK_WDMA_DESC_CTRL_LEN1,
  28 -                                               MTK_WED_BUF_SIZE - txd_size) |
  29 -                                    MTK_WDMA_DESC_CTRL_LAST_SEG1;
  30 +                       desc->buf0 = cpu_to_le32(buf_phys);
  31 +                       desc->buf1 = cpu_to_le32(buf_phys + txd_size);
  32 +                       ctrl = FIELD_PREP(MTK_WDMA_DESC_CTRL_LEN0, txd_size) |
  33 +                              FIELD_PREP(MTK_WDMA_DESC_CTRL_LEN1,
  34 +                                         MTK_WED_BUF_SIZE - txd_size) |
  35 +                              MTK_WDMA_DESC_CTRL_LAST_SEG1;
  36 +                       desc->ctrl = cpu_to_le32(ctrl);
  37                         desc->info = 0;
  38                         desc++;
  39
  40 @@ -184,12 +185,14 @@ mtk_wed_free_buffer(struct mtk_wed_devic
  41
  42         for (i = 0, page_idx = 0; i < dev->buf_ring.size; i += MTK_WED_BUF_PER_PAGE) {
  43                 void *page = page_list[page_idx++];
  44 +               dma_addr_t buf_addr;
  45
  46                 if (!page)
  47                         break;
  48
  49 -               dma_unmap_page(dev->hw->dev, desc[i].buf0,
  50 -                              PAGE_SIZE, DMA_BIDIRECTIONAL);
  51 +               buf_addr = le32_to_cpu(desc[i].buf0);
  52 +               dma_unmap_page(dev->hw->dev, buf_addr, PAGE_SIZE,
  53 +                              DMA_BIDIRECTIONAL);
  54                 __free_page(page);
  55         }
  56