Refreshed all patches.

Compile-tested on: ar71xx
Runtime-tested on: ar71xx

Signed-off-by: Koen Vandeputte <koen.vandepu...@ncentric.com>
---
 include/kernel-version.mk                          |   4 +-
 ...-detect-JEDEC-incompatible-w25q128-using-.patch |   2 +-
 ...80-NET-skip-GRO-for-foreign-MAC-addresses.patch |  10 +-
 .../202-core-linux-support-layerscape.patch        |   2 +-
 .../401-mtd-spi-nor-support-layerscape.patch       |  14 +-
 ...53-mtd-spi-nor-add-w25q256-3b-mode-switch.patch |  10 +-
 .../0054-mtd-add-chunked-read-io-to-m25p80.patch   |   6 +-
 .../sunxi/patches-4.9/0052-stmmac-form-4-12.patch  | 386 +++++++++++----------
 8 files changed, 228 insertions(+), 206 deletions(-)

diff --git a/include/kernel-version.mk b/include/kernel-version.mk
index 4be674ccdde7..8b3187b7085d 100644
--- a/include/kernel-version.mk
+++ b/include/kernel-version.mk
@@ -4,12 +4,12 @@ LINUX_RELEASE?=1
 
 LINUX_VERSION-3.18 = .71
 LINUX_VERSION-4.4 = .121
-LINUX_VERSION-4.9 = .91
+LINUX_VERSION-4.9 = .92
 LINUX_VERSION-4.14 = .32
 
 LINUX_KERNEL_HASH-3.18.71 = 
5abc9778ad44ce02ed6c8ab52ece8a21c6d20d21f6ed8a19287b4a38a50c1240
 LINUX_KERNEL_HASH-4.4.121 = 
44a88268b5088dc326b30c9b9133ac35a9a200b636b7268d08f32abeae6ca729
-LINUX_KERNEL_HASH-4.9.91 = 
60caa752ec9fa1c426f6a2f37db3f268d0961b67a723b6443949112167b39832
+LINUX_KERNEL_HASH-4.9.92 = 
028dab1ee686b7bcf70ccd623828162ad2da63c73e6f0d88a6e622a3fe786e64
 LINUX_KERNEL_HASH-4.14.32 = 
cb0979bec663089a43b10cfbeae0cf9673544b0ff5968c33ede614ec0f43b680
 
 remove_uri_prefix=$(subst git://,,$(subst http://,,$(subst https://,,$(1))))
diff --git 
a/target/linux/bcm53xx/patches-4.9/400-mtd-spi-nor-detect-JEDEC-incompatible-w25q128-using-.patch
 
b/target/linux/bcm53xx/patches-4.9/400-mtd-spi-nor-detect-JEDEC-incompatible-w25q128-using-.patch
index 665c9786c76d..caed9ec41db3 100644
--- 
a/target/linux/bcm53xx/patches-4.9/400-mtd-spi-nor-detect-JEDEC-incompatible-w25q128-using-.patch
+++ 
b/target/linux/bcm53xx/patches-4.9/400-mtd-spi-nor-detect-JEDEC-incompatible-w25q128-using-.patch
@@ -13,7 +13,7 @@ Signed-off-by: Rafał Miłecki <zaj...@gmail.com>
 
 --- a/drivers/mtd/spi-nor/spi-nor.c
 +++ b/drivers/mtd/spi-nor/spi-nor.c
-@@ -1190,6 +1190,18 @@ static const struct flash_info *spi_nor_
+@@ -1194,6 +1194,18 @@ static const struct flash_info *spi_nor_
        }
        dev_err(nor->dev, "unrecognized JEDEC id bytes: %02x, %02x, %02x\n",
                id[0], id[1], id[2]);
diff --git 
a/target/linux/generic/pending-4.9/680-NET-skip-GRO-for-foreign-MAC-addresses.patch
 
b/target/linux/generic/pending-4.9/680-NET-skip-GRO-for-foreign-MAC-addresses.patch
index 86a64d84245b..4d1f6c4c2b9c 100644
--- 
a/target/linux/generic/pending-4.9/680-NET-skip-GRO-for-foreign-MAC-addresses.patch
+++ 
b/target/linux/generic/pending-4.9/680-NET-skip-GRO-for-foreign-MAC-addresses.patch
@@ -34,7 +34,7 @@ Signed-off-by: Felix Fietkau <n...@nbd.name>
        __u16                   tc_index;       /* traffic control index */
 --- a/net/core/dev.c
 +++ b/net/core/dev.c
-@@ -4542,6 +4542,9 @@ static enum gro_result dev_gro_receive(s
+@@ -4550,6 +4550,9 @@ static enum gro_result dev_gro_receive(s
        enum gro_result ret;
        int grow;
  
@@ -44,7 +44,7 @@ Signed-off-by: Felix Fietkau <n...@nbd.name>
        if (!(skb->dev->features & NETIF_F_GRO))
                goto normal;
  
-@@ -5830,6 +5833,48 @@ static void __netdev_adjacent_dev_unlink
+@@ -5838,6 +5841,48 @@ static void __netdev_adjacent_dev_unlink
                                           &upper_dev->adj_list.lower);
  }
  
@@ -93,7 +93,7 @@ Signed-off-by: Felix Fietkau <n...@nbd.name>
  static int __netdev_upper_dev_link(struct net_device *dev,
                                   struct net_device *upper_dev, bool master,
                                   void *upper_priv, void *upper_info)
-@@ -5902,6 +5947,7 @@ static int __netdev_upper_dev_link(struc
+@@ -5910,6 +5955,7 @@ static int __netdev_upper_dev_link(struc
                        goto rollback_lower_mesh;
        }
  
@@ -101,7 +101,7 @@ Signed-off-by: Felix Fietkau <n...@nbd.name>
        ret = call_netdevice_notifiers_info(NETDEV_CHANGEUPPER, dev,
                                            &changeupper_info.info);
        ret = notifier_to_errno(ret);
-@@ -6028,6 +6074,7 @@ void netdev_upper_dev_unlink(struct net_
+@@ -6036,6 +6082,7 @@ void netdev_upper_dev_unlink(struct net_
        list_for_each_entry(i, &upper_dev->all_adj_list.upper, list)
                __netdev_adjacent_dev_unlink(dev, i->dev, i->ref_nr);
  
@@ -109,7 +109,7 @@ Signed-off-by: Felix Fietkau <n...@nbd.name>
        call_netdevice_notifiers_info(NETDEV_CHANGEUPPER, dev,
                                      &changeupper_info.info);
  }
-@@ -6628,6 +6675,7 @@ int dev_set_mac_address(struct net_devic
+@@ -6636,6 +6683,7 @@ int dev_set_mac_address(struct net_devic
        if (err)
                return err;
        dev->addr_assign_type = NET_ADDR_SET;
diff --git 
a/target/linux/layerscape/patches-4.9/202-core-linux-support-layerscape.patch 
b/target/linux/layerscape/patches-4.9/202-core-linux-support-layerscape.patch
index 77e54f83403e..a284d8bbd47a 100644
--- 
a/target/linux/layerscape/patches-4.9/202-core-linux-support-layerscape.patch
+++ 
b/target/linux/layerscape/patches-4.9/202-core-linux-support-layerscape.patch
@@ -421,7 +421,7 @@ Signed-off-by: Yangbo Lu <yangbo...@nxp.com>
   *    These are the defined Ethernet Protocol ID's.
 --- a/net/core/dev.c
 +++ b/net/core/dev.c
-@@ -6622,9 +6622,18 @@ int dev_set_mtu(struct net_device *dev,
+@@ -6630,9 +6630,18 @@ int dev_set_mtu(struct net_device *dev,
        if (new_mtu == dev->mtu)
                return 0;
  
diff --git 
a/target/linux/layerscape/patches-4.9/401-mtd-spi-nor-support-layerscape.patch 
b/target/linux/layerscape/patches-4.9/401-mtd-spi-nor-support-layerscape.patch
index 6ffc2e1097fb..9d849686080c 100644
--- 
a/target/linux/layerscape/patches-4.9/401-mtd-spi-nor-support-layerscape.patch
+++ 
b/target/linux/layerscape/patches-4.9/401-mtd-spi-nor-support-layerscape.patch
@@ -768,7 +768,7 @@ Signed-off-by: Yangbo Lu <yangbo...@nxp.com>
        { "w25q32", INFO(0xef4016, 0, 64 * 1024,  64, SECT_4K) },
        {
                "w25q32dw", INFO(0xef6016, 0, 64 * 1024,  64,
-@@ -1192,6 +1216,53 @@ static const struct flash_info *spi_nor_
+@@ -1196,6 +1220,53 @@ static const struct flash_info *spi_nor_
                id[0], id[1], id[2]);
        return ERR_PTR(-ENODEV);
  }
@@ -822,7 +822,7 @@ Signed-off-by: Yangbo Lu <yangbo...@nxp.com>
  
  static int spi_nor_read(struct mtd_info *mtd, loff_t from, size_t len,
                        size_t *retlen, u_char *buf)
-@@ -1411,7 +1482,7 @@ static int macronix_quad_enable(struct s
+@@ -1415,7 +1486,7 @@ static int macronix_quad_enable(struct s
   * Write status Register and configuration register with 2 bytes
   * The first byte will be written to the status register, while the
   * second byte will be written to the configuration register.
@@ -831,7 +831,7 @@ Signed-off-by: Yangbo Lu <yangbo...@nxp.com>
   */
  static int write_sr_cr(struct spi_nor *nor, u16 val)
  {
-@@ -1459,6 +1530,24 @@ static int spansion_quad_enable(struct s
+@@ -1463,6 +1534,24 @@ static int spansion_quad_enable(struct s
        return 0;
  }
  
@@ -856,7 +856,7 @@ Signed-off-by: Yangbo Lu <yangbo...@nxp.com>
  static int set_quad_mode(struct spi_nor *nor, const struct flash_info *info)
  {
        int status;
-@@ -1605,9 +1694,25 @@ int spi_nor_scan(struct spi_nor *nor, co
+@@ -1609,9 +1698,25 @@ int spi_nor_scan(struct spi_nor *nor, co
                write_sr(nor, 0);
                spi_nor_wait_till_ready(nor);
        }
@@ -882,7 +882,7 @@ Signed-off-by: Yangbo Lu <yangbo...@nxp.com>
        mtd->priv = nor;
        mtd->type = MTD_NORFLASH;
        mtd->writesize = 1;
-@@ -1641,6 +1746,8 @@ int spi_nor_scan(struct spi_nor *nor, co
+@@ -1645,6 +1750,8 @@ int spi_nor_scan(struct spi_nor *nor, co
                nor->flags |= SNOR_F_USE_FSR;
        if (info->flags & SPI_NOR_HAS_TB)
                nor->flags |= SNOR_F_HAS_SR_TB;
@@ -891,7 +891,7 @@ Signed-off-by: Yangbo Lu <yangbo...@nxp.com>
  
  #ifdef CONFIG_MTD_SPI_NOR_USE_4K_SECTORS
        /* prefer "small sector" erase if possible */
-@@ -1680,9 +1787,15 @@ int spi_nor_scan(struct spi_nor *nor, co
+@@ -1684,9 +1791,15 @@ int spi_nor_scan(struct spi_nor *nor, co
        /* Some devices cannot do fast-read, no matter what DT tells us */
        if (info->flags & SPI_NOR_NO_FR)
                nor->flash_read = SPI_NOR_NORMAL;
@@ -910,7 +910,7 @@ Signed-off-by: Yangbo Lu <yangbo...@nxp.com>
                ret = set_quad_mode(nor, info);
                if (ret) {
                        dev_err(dev, "quad mode not supported\n");
-@@ -1695,6 +1808,9 @@ int spi_nor_scan(struct spi_nor *nor, co
+@@ -1699,6 +1812,9 @@ int spi_nor_scan(struct spi_nor *nor, co
  
        /* Default commands */
        switch (nor->flash_read) {
diff --git 
a/target/linux/ramips/patches-4.9/0053-mtd-spi-nor-add-w25q256-3b-mode-switch.patch
 
b/target/linux/ramips/patches-4.9/0053-mtd-spi-nor-add-w25q256-3b-mode-switch.patch
index c43dd03eeb03..a27f922a0462 100644
--- 
a/target/linux/ramips/patches-4.9/0053-mtd-spi-nor-add-w25q256-3b-mode-switch.patch
+++ 
b/target/linux/ramips/patches-4.9/0053-mtd-spi-nor-add-w25q256-3b-mode-switch.patch
@@ -125,7 +125,7 @@ Signed-off-by: Felix Fietkau <n...@nbd.name>
  
        /* Catalyst / On Semiconductor -- non-JEDEC */
        { "cat25c11", CAT25_INFO(  16, 8, 16, 1, SPI_NOR_NO_ERASE | 
SPI_NOR_NO_FR) },
-@@ -1205,6 +1257,9 @@ static int spi_nor_read(struct mtd_info
+@@ -1209,6 +1261,9 @@ static int spi_nor_read(struct mtd_info
        if (ret)
                return ret;
  
@@ -135,7 +135,7 @@ Signed-off-by: Felix Fietkau <n...@nbd.name>
        while (len) {
                loff_t addr = from;
  
-@@ -1229,6 +1284,18 @@ static int spi_nor_read(struct mtd_info
+@@ -1233,6 +1288,18 @@ static int spi_nor_read(struct mtd_info
        ret = 0;
  
  read_err:
@@ -154,7 +154,7 @@ Signed-off-by: Felix Fietkau <n...@nbd.name>
        spi_nor_unlock_and_unprep(nor, SPI_NOR_OPS_READ);
        return ret;
  }
-@@ -1330,6 +1397,10 @@ static int spi_nor_write(struct mtd_info
+@@ -1334,6 +1401,10 @@ static int spi_nor_write(struct mtd_info
        if (ret)
                return ret;
  
@@ -165,7 +165,7 @@ Signed-off-by: Felix Fietkau <n...@nbd.name>
        for (i = 0; i < len; ) {
                ssize_t written;
                loff_t addr = to + i;
-@@ -1377,6 +1448,7 @@ static int spi_nor_write(struct mtd_info
+@@ -1381,6 +1452,7 @@ static int spi_nor_write(struct mtd_info
        }
  
  write_err:
@@ -173,7 +173,7 @@ Signed-off-by: Felix Fietkau <n...@nbd.name>
        spi_nor_unlock_and_unprep(nor, SPI_NOR_OPS_WRITE);
        return ret;
  }
-@@ -1719,8 +1791,10 @@ int spi_nor_scan(struct spi_nor *nor, co
+@@ -1723,8 +1795,10 @@ int spi_nor_scan(struct spi_nor *nor, co
        else if (mtd->size > 0x1000000) {
                /* enable 4-byte addressing if the device exceeds 16MiB */
                nor->addr_width = 4;
diff --git 
a/target/linux/ramips/patches-4.9/0054-mtd-add-chunked-read-io-to-m25p80.patch 
b/target/linux/ramips/patches-4.9/0054-mtd-add-chunked-read-io-to-m25p80.patch
index d6133e15965e..4045376842c5 100644
--- 
a/target/linux/ramips/patches-4.9/0054-mtd-add-chunked-read-io-to-m25p80.patch
+++ 
b/target/linux/ramips/patches-4.9/0054-mtd-add-chunked-read-io-to-m25p80.patch
@@ -1,6 +1,6 @@
 --- a/drivers/mtd/spi-nor/spi-nor.c
 +++ b/drivers/mtd/spi-nor/spi-nor.c
-@@ -1453,6 +1453,67 @@ write_err:
+@@ -1457,6 +1457,67 @@ write_err:
        return ret;
  }
  
@@ -68,7 +68,7 @@
  static int macronix_quad_enable(struct spi_nor *nor)
  {
        int ret, val;
-@@ -1704,10 +1765,12 @@ int spi_nor_scan(struct spi_nor *nor, co
+@@ -1708,10 +1769,12 @@ int spi_nor_scan(struct spi_nor *nor, co
        }
  
        /* sst nor chips use AAI word program */
@@ -83,7 +83,7 @@
  
        if (info->flags & USE_FSR)
                nor->flags |= SNOR_F_USE_FSR;
-@@ -1739,11 +1802,20 @@ int spi_nor_scan(struct spi_nor *nor, co
+@@ -1743,11 +1806,20 @@ int spi_nor_scan(struct spi_nor *nor, co
        mtd->writebufsize = nor->page_size;
  
        if (np) {
diff --git a/target/linux/sunxi/patches-4.9/0052-stmmac-form-4-12.patch 
b/target/linux/sunxi/patches-4.9/0052-stmmac-form-4-12.patch
index 1356a4b9e97a..182648b98fa7 100644
--- a/target/linux/sunxi/patches-4.9/0052-stmmac-form-4-12.patch
+++ b/target/linux/sunxi/patches-4.9/0052-stmmac-form-4-12.patch
@@ -2887,7 +2887,7 @@
 +
 +              /* Display RX ring */
 +              priv->hw->desc->display_ring(head_rx, DMA_RX_SIZE, true);
-       }
++      }
 +}
 +
 +static void stmmac_display_tx_rings(struct stmmac_priv *priv)
@@ -2906,15 +2906,15 @@
 +                      head_tx = (void *)tx_q->dma_etx;
 +              else
 +                      head_tx = (void *)tx_q->dma_tx;
++
++              priv->hw->desc->display_ring(head_tx, DMA_TX_SIZE, false);
+       }
++}
  
 -      /* Display Rx ring */
 -      priv->hw->desc->display_ring(head_rx, DMA_RX_SIZE, true);
 -      /* Display Tx ring */
 -      priv->hw->desc->display_ring(head_tx, DMA_TX_SIZE, false);
-+              priv->hw->desc->display_ring(head_tx, DMA_TX_SIZE, false);
-+      }
-+}
-+
 +static void stmmac_display_rings(struct stmmac_priv *priv)
 +{
 +      /* Display RX ring */
@@ -3131,7 +3131,7 @@
  
        if (priv->hw->mode->set_16kib_bfsize)
                bfsize = priv->hw->mode->set_16kib_bfsize(dev->mtu);
-@@ -1024,235 +1234,409 @@ static int init_dma_desc_rings(struct ne
+@@ -1024,257 +1234,516 @@ static int init_dma_desc_rings(struct ne
  
        priv->dma_buf_sz = bfsize;
  
@@ -3163,7 +3163,10 @@
 +                              p = &((rx_q->dma_erx + i)->basic);
 +                      else
 +                              p = rx_q->dma_rx + i;
-+
+ 
+-              ret = stmmac_init_rx_buffers(priv, p, i, flags);
+-              if (ret)
+-                      goto err_init_rx_buffers;
 +                      ret = stmmac_init_rx_buffers(priv, p, i, flags,
 +                                                   queue);
 +                      if (ret)
@@ -3173,18 +3176,15 @@
 +                                rx_q->rx_skbuff[i], rx_q->rx_skbuff[i]->data,
 +                                (unsigned int)rx_q->rx_skbuff_dma[i]);
 +              }
- 
--              ret = stmmac_init_rx_buffers(priv, p, i, flags);
--              if (ret)
--                      goto err_init_rx_buffers;
++
 +              rx_q->cur_rx = 0;
 +              rx_q->dirty_rx = (unsigned int)(i - DMA_RX_SIZE);
++
++              stmmac_clear_rx_descriptors(priv, queue);
  
 -              netif_dbg(priv, probe, priv->dev, "[%p]\t[%p]\t[%x]\n",
 -                        priv->rx_skbuff[i], priv->rx_skbuff[i]->data,
 -                        (unsigned int)priv->rx_skbuff_dma[i]);
-+              stmmac_clear_rx_descriptors(priv, queue);
-+
 +              /* Setup the chained descriptor addresses */
 +              if (priv->mode == STMMAC_CHAIN_MODE) {
 +                      if (priv->extend_desc)
@@ -3277,8 +3277,13 @@
 +                              priv->hw->mode->init(tx_q->dma_tx,
 +                                                   tx_q->dma_tx_phy,
 +                                                   DMA_TX_SIZE, 0);
-+              }
-+
+               }
+ 
+-              priv->tx_skbuff_dma[i].buf = 0;
+-              priv->tx_skbuff_dma[i].map_as_page = false;
+-              priv->tx_skbuff_dma[i].len = 0;
+-              priv->tx_skbuff_dma[i].last_segment = false;
+-              priv->tx_skbuff[i] = NULL;
 +              for (i = 0; i < DMA_TX_SIZE; i++) {
 +                      struct dma_desc *p;
 +                      if (priv->extend_desc)
@@ -3300,13 +3305,8 @@
 +                      tx_q->tx_skbuff_dma[i].len = 0;
 +                      tx_q->tx_skbuff_dma[i].last_segment = false;
 +                      tx_q->tx_skbuff[i] = NULL;
-               }
- 
--              priv->tx_skbuff_dma[i].buf = 0;
--              priv->tx_skbuff_dma[i].map_as_page = false;
--              priv->tx_skbuff_dma[i].len = 0;
--              priv->tx_skbuff_dma[i].last_segment = false;
--              priv->tx_skbuff[i] = NULL;
++              }
++
 +              tx_q->dirty_tx = 0;
 +              tx_q->cur_tx = 0;
 +
@@ -3387,17 +3387,10 @@
 -                                               priv->tx_skbuff_dma[i].buf,
 -                                               priv->tx_skbuff_dma[i].len,
 -                                               DMA_TO_DEVICE);
--              }
 +      for (i = 0; i < DMA_TX_SIZE; i++)
 +              stmmac_free_tx_buffer(priv, queue, i);
 +}
- 
--              if (priv->tx_skbuff[i]) {
--                      dev_kfree_skb_any(priv->tx_skbuff[i]);
--                      priv->tx_skbuff[i] = NULL;
--                      priv->tx_skbuff_dma[i].buf = 0;
--                      priv->tx_skbuff_dma[i].map_as_page = false;
--              }
++
 +/**
 + * free_dma_rx_desc_resources - free RX dma desc resources
 + * @priv: private structure
@@ -3426,11 +3419,10 @@
 +
 +              kfree(rx_q->rx_skbuff_dma);
 +              kfree(rx_q->rx_skbuff);
-       }
- }
- 
- /**
-- * alloc_dma_desc_resources - alloc TX/RX resources.
++      }
++}
++
++/**
 + * free_dma_tx_desc_resources - free TX dma desc resources
 + * @priv: private structure
 + */
@@ -3463,90 +3455,36 @@
 +
 +/**
 + * alloc_dma_rx_desc_resources - alloc RX resources.
-  * @priv: private structure
-  * Description: according to which descriptor can be used (extend or basic)
-  * this function allocates the resources for TX and RX paths. In case of
-  * reception, for example, it pre-allocated the RX socket buffer in order to
-  * allow zero-copy mechanism.
-  */
--static int alloc_dma_desc_resources(struct stmmac_priv *priv)
++ * @priv: private structure
++ * Description: according to which descriptor can be used (extend or basic)
++ * this function allocates the resources for TX and RX paths. In case of
++ * reception, for example, it pre-allocated the RX socket buffer in order to
++ * allow zero-copy mechanism.
++ */
 +static int alloc_dma_rx_desc_resources(struct stmmac_priv *priv)
- {
++{
 +      u32 rx_count = priv->plat->rx_queues_to_use;
-       int ret = -ENOMEM;
++      int ret = -ENOMEM;
 +      u32 queue;
- 
--      priv->rx_skbuff_dma = kmalloc_array(DMA_RX_SIZE, sizeof(dma_addr_t),
--                                          GFP_KERNEL);
--      if (!priv->rx_skbuff_dma)
--              return -ENOMEM;
++
 +      /* RX queues buffers and DMA */
 +      for (queue = 0; queue < rx_count; queue++) {
 +              struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
- 
--      priv->rx_skbuff = kmalloc_array(DMA_RX_SIZE, sizeof(struct sk_buff *),
--                                      GFP_KERNEL);
--      if (!priv->rx_skbuff)
--              goto err_rx_skbuff;
--
--      priv->tx_skbuff_dma = kmalloc_array(DMA_TX_SIZE,
--                                          sizeof(*priv->tx_skbuff_dma),
--                                          GFP_KERNEL);
--      if (!priv->tx_skbuff_dma)
--              goto err_tx_skbuff_dma;
--
--      priv->tx_skbuff = kmalloc_array(DMA_TX_SIZE, sizeof(struct sk_buff *),
--                                      GFP_KERNEL);
--      if (!priv->tx_skbuff)
--              goto err_tx_skbuff;
--
--      if (priv->extend_desc) {
--              priv->dma_erx = dma_zalloc_coherent(priv->device, DMA_RX_SIZE *
--                                                  sizeof(struct
--                                                         dma_extended_desc),
--                                                  &priv->dma_rx_phy,
--                                                  GFP_KERNEL);
--              if (!priv->dma_erx)
--                      goto err_dma;
++
 +              rx_q->queue_index = queue;
 +              rx_q->priv_data = priv;
- 
--              priv->dma_etx = dma_zalloc_coherent(priv->device, DMA_TX_SIZE *
--                                                  sizeof(struct
--                                                         dma_extended_desc),
--                                                  &priv->dma_tx_phy,
++
 +              rx_q->rx_skbuff_dma = kmalloc_array(DMA_RX_SIZE,
 +                                                  sizeof(dma_addr_t),
-                                                   GFP_KERNEL);
--              if (!priv->dma_etx) {
--                      dma_free_coherent(priv->device, DMA_RX_SIZE *
--                                        sizeof(struct dma_extended_desc),
--                                        priv->dma_erx, priv->dma_rx_phy);
--                      goto err_dma;
--              }
--      } else {
--              priv->dma_rx = dma_zalloc_coherent(priv->device, DMA_RX_SIZE *
--                                                 sizeof(struct dma_desc),
--                                                 &priv->dma_rx_phy,
--                                                 GFP_KERNEL);
--              if (!priv->dma_rx)
--                      goto err_dma;
++                                                  GFP_KERNEL);
 +              if (!rx_q->rx_skbuff_dma)
 +                      return -ENOMEM;
- 
--              priv->dma_tx = dma_zalloc_coherent(priv->device, DMA_TX_SIZE *
--                                                 sizeof(struct dma_desc),
--                                                 &priv->dma_tx_phy,
--                                                 GFP_KERNEL);
--              if (!priv->dma_tx) {
--                      dma_free_coherent(priv->device, DMA_RX_SIZE *
--                                        sizeof(struct dma_desc),
--                                        priv->dma_rx, priv->dma_rx_phy);
++
 +              rx_q->rx_skbuff = kmalloc_array(DMA_RX_SIZE,
 +                                              sizeof(struct sk_buff *),
 +                                              GFP_KERNEL);
 +              if (!rx_q->rx_skbuff)
-                       goto err_dma;
++                      goto err_dma;
 +
 +              if (priv->extend_desc) {
 +                      rx_q->dma_erx = dma_zalloc_coherent(priv->device,
@@ -3567,19 +3505,12 @@
 +                                                         GFP_KERNEL);
 +                      if (!rx_q->dma_rx)
 +                              goto err_dma;
-               }
-       }
- 
-       return 0;
- 
- err_dma:
--      kfree(priv->tx_skbuff);
--err_tx_skbuff:
--      kfree(priv->tx_skbuff_dma);
--err_tx_skbuff_dma:
--      kfree(priv->rx_skbuff);
--err_rx_skbuff:
--      kfree(priv->rx_skbuff_dma);
++              }
++      }
++
++      return 0;
++
++err_dma:
 +      free_dma_rx_desc_resources(priv);
 +
 +      return ret;
@@ -3636,7 +3567,7 @@
 +                                                         GFP_KERNEL);
 +                      if (!tx_q->dma_tx)
 +                              goto err_dma_buffers;
-+              }
+               }
 +      }
 +
 +      return 0;
@@ -3644,9 +3575,9 @@
 +err_dma_buffers:
 +      free_dma_tx_desc_resources(priv);
 +
-       return ret;
- }
- 
++      return ret;
++}
++
 +/**
 + * alloc_dma_desc_resources - alloc TX/RX resources.
 + * @priv: private structure
@@ -3672,78 +3603,119 @@
 + * free_dma_desc_resources - free dma desc resources
 + * @priv: private structure
 + */
- static void free_dma_desc_resources(struct stmmac_priv *priv)
- {
--      /* Release the DMA TX/RX socket buffers */
--      dma_free_rx_skbufs(priv);
--      dma_free_tx_skbufs(priv);
--
--      /* Free DMA regions of consistent memory previously allocated */
--      if (!priv->extend_desc) {
--              dma_free_coherent(priv->device,
--                                DMA_TX_SIZE * sizeof(struct dma_desc),
--                                priv->dma_tx, priv->dma_tx_phy);
--              dma_free_coherent(priv->device,
--                                DMA_RX_SIZE * sizeof(struct dma_desc),
--                                priv->dma_rx, priv->dma_rx_phy);
--      } else {
--              dma_free_coherent(priv->device, DMA_TX_SIZE *
--                                sizeof(struct dma_extended_desc),
--                                priv->dma_etx, priv->dma_tx_phy);
--              dma_free_coherent(priv->device, DMA_RX_SIZE *
--                                sizeof(struct dma_extended_desc),
--                                priv->dma_erx, priv->dma_rx_phy);
--      }
--      kfree(priv->rx_skbuff_dma);
--      kfree(priv->rx_skbuff);
--      kfree(priv->tx_skbuff_dma);
--      kfree(priv->tx_skbuff);
++static void free_dma_desc_resources(struct stmmac_priv *priv)
++{
 +      /* Release the DMA RX socket buffers */
 +      free_dma_rx_desc_resources(priv);
 +
 +      /* Release the DMA TX socket buffers */
 +      free_dma_tx_desc_resources(priv);
- }
- 
- /**
-@@ -1262,19 +1646,104 @@ static void free_dma_desc_resources(stru
-  */
- static void stmmac_mac_enable_rx_queues(struct stmmac_priv *priv)
- {
--      int rx_count = priv->dma_cap.number_rx_queues;
--      int queue = 0;
++}
++
++/**
++ *  stmmac_mac_enable_rx_queues - Enable MAC rx queues
++ *  @priv: driver private structure
++ *  Description: It is used for enabling the rx queues in the MAC
++ */
++static void stmmac_mac_enable_rx_queues(struct stmmac_priv *priv)
++{
 +      u32 rx_queues_count = priv->plat->rx_queues_to_use;
 +      int queue;
 +      u8 mode;
  
--      /* If GMAC does not have multiple queues, then this is not necessary*/
--      if (rx_count == 1)
--              return;
+-              if (priv->tx_skbuff[i]) {
+-                      dev_kfree_skb_any(priv->tx_skbuff[i]);
+-                      priv->tx_skbuff[i] = NULL;
+-                      priv->tx_skbuff_dma[i].buf = 0;
+-                      priv->tx_skbuff_dma[i].map_as_page = false;
+-              }
 +      for (queue = 0; queue < rx_queues_count; queue++) {
 +              mode = priv->plat->rx_queues_cfg[queue].mode_to_use;
 +              priv->hw->mac->rx_queue_enable(priv->hw, mode, queue);
-+      }
-+}
+       }
+ }
  
--      /**
--       *  If the core is synthesized with multiple rx queues / multiple
--       *  dma channels, then rx queues will be disabled by default.
--       *  For now only rx queue 0 is enabled.
--       */
--      priv->hw->mac->rx_queue_enable(priv->hw, queue);
-+/**
+ /**
+- * alloc_dma_desc_resources - alloc TX/RX resources.
+- * @priv: private structure
+- * Description: according to which descriptor can be used (extend or basic)
+- * this function allocates the resources for TX and RX paths. In case of
+- * reception, for example, it pre-allocated the RX socket buffer in order to
+- * allow zero-copy mechanism.
 + * stmmac_start_rx_dma - start RX DMA channel
 + * @priv: driver private structure
 + * @chan: RX channel index
 + * Description:
 + * This starts a RX DMA channel
-+ */
+  */
+-static int alloc_dma_desc_resources(struct stmmac_priv *priv)
 +static void stmmac_start_rx_dma(struct stmmac_priv *priv, u32 chan)
-+{
+ {
+-      int ret = -ENOMEM;
+-
+-      priv->rx_skbuff_dma = kmalloc_array(DMA_RX_SIZE, sizeof(dma_addr_t),
+-                                          GFP_KERNEL);
+-      if (!priv->rx_skbuff_dma)
+-              return -ENOMEM;
+-
+-      priv->rx_skbuff = kmalloc_array(DMA_RX_SIZE, sizeof(struct sk_buff *),
+-                                      GFP_KERNEL);
+-      if (!priv->rx_skbuff)
+-              goto err_rx_skbuff;
+-
+-      priv->tx_skbuff_dma = kmalloc_array(DMA_TX_SIZE,
+-                                          sizeof(*priv->tx_skbuff_dma),
+-                                          GFP_KERNEL);
+-      if (!priv->tx_skbuff_dma)
+-              goto err_tx_skbuff_dma;
+-
+-      priv->tx_skbuff = kmalloc_array(DMA_TX_SIZE, sizeof(struct sk_buff *),
+-                                      GFP_KERNEL);
+-      if (!priv->tx_skbuff)
+-              goto err_tx_skbuff;
+-
+-      if (priv->extend_desc) {
+-              priv->dma_erx = dma_zalloc_coherent(priv->device, DMA_RX_SIZE *
+-                                                  sizeof(struct
+-                                                         dma_extended_desc),
+-                                                  &priv->dma_rx_phy,
+-                                                  GFP_KERNEL);
+-              if (!priv->dma_erx)
+-                      goto err_dma;
+-
+-              priv->dma_etx = dma_zalloc_coherent(priv->device, DMA_TX_SIZE *
+-                                                  sizeof(struct
+-                                                         dma_extended_desc),
+-                                                  &priv->dma_tx_phy,
+-                                                  GFP_KERNEL);
+-              if (!priv->dma_etx) {
+-                      dma_free_coherent(priv->device, DMA_RX_SIZE *
+-                                        sizeof(struct dma_extended_desc),
+-                                        priv->dma_erx, priv->dma_rx_phy);
+-                      goto err_dma;
+-              }
+-      } else {
+-              priv->dma_rx = dma_zalloc_coherent(priv->device, DMA_RX_SIZE *
+-                                                 sizeof(struct dma_desc),
+-                                                 &priv->dma_rx_phy,
+-                                                 GFP_KERNEL);
+-              if (!priv->dma_rx)
+-                      goto err_dma;
 +      netdev_dbg(priv->dev, "DMA RX processes started in channel %d\n", chan);
 +      priv->hw->dma->start_rx(priv->ioaddr, chan);
 +}
-+
+ 
+-              priv->dma_tx = dma_zalloc_coherent(priv->device, DMA_TX_SIZE *
+-                                                 sizeof(struct dma_desc),
+-                                                 &priv->dma_tx_phy,
+-                                                 GFP_KERNEL);
+-              if (!priv->dma_tx) {
+-                      dma_free_coherent(priv->device, DMA_RX_SIZE *
+-                                        sizeof(struct dma_desc),
+-                                        priv->dma_rx, priv->dma_rx_phy);
+-                      goto err_dma;
+-              }
+-      }
 +/**
 + * stmmac_start_tx_dma - start TX DMA channel
 + * @priv: driver private structure
@@ -3756,7 +3728,8 @@
 +      netdev_dbg(priv->dev, "DMA TX processes started in channel %d\n", chan);
 +      priv->hw->dma->start_tx(priv->ioaddr, chan);
 +}
-+
+ 
+-      return 0;
 +/**
 + * stmmac_stop_rx_dma - stop RX DMA channel
 + * @priv: driver private structure
@@ -3769,7 +3742,16 @@
 +      netdev_dbg(priv->dev, "DMA RX processes stopped in channel %d\n", chan);
 +      priv->hw->dma->stop_rx(priv->ioaddr, chan);
 +}
-+
+ 
+-err_dma:
+-      kfree(priv->tx_skbuff);
+-err_tx_skbuff:
+-      kfree(priv->tx_skbuff_dma);
+-err_tx_skbuff_dma:
+-      kfree(priv->rx_skbuff);
+-err_rx_skbuff:
+-      kfree(priv->rx_skbuff_dma);
+-      return ret;
 +/**
 + * stmmac_stop_tx_dma - stop TX DMA channel
 + * @priv: driver private structure
@@ -3781,8 +3763,9 @@
 +{
 +      netdev_dbg(priv->dev, "DMA TX processes stopped in channel %d\n", chan);
 +      priv->hw->dma->stop_tx(priv->ioaddr, chan);
-+}
-+
+ }
+ 
+-static void free_dma_desc_resources(struct stmmac_priv *priv)
 +/**
 + * stmmac_start_all_dma - start all RX and TX DMA channels
 + * @priv: driver private structure
@@ -3790,7 +3773,31 @@
 + * This starts all the RX and TX DMA channels
 + */
 +static void stmmac_start_all_dma(struct stmmac_priv *priv)
-+{
+ {
+-      /* Release the DMA TX/RX socket buffers */
+-      dma_free_rx_skbufs(priv);
+-      dma_free_tx_skbufs(priv);
+-
+-      /* Free DMA regions of consistent memory previously allocated */
+-      if (!priv->extend_desc) {
+-              dma_free_coherent(priv->device,
+-                                DMA_TX_SIZE * sizeof(struct dma_desc),
+-                                priv->dma_tx, priv->dma_tx_phy);
+-              dma_free_coherent(priv->device,
+-                                DMA_RX_SIZE * sizeof(struct dma_desc),
+-                                priv->dma_rx, priv->dma_rx_phy);
+-      } else {
+-              dma_free_coherent(priv->device, DMA_TX_SIZE *
+-                                sizeof(struct dma_extended_desc),
+-                                priv->dma_etx, priv->dma_tx_phy);
+-              dma_free_coherent(priv->device, DMA_RX_SIZE *
+-                                sizeof(struct dma_extended_desc),
+-                                priv->dma_erx, priv->dma_rx_phy);
+-      }
+-      kfree(priv->rx_skbuff_dma);
+-      kfree(priv->rx_skbuff);
+-      kfree(priv->tx_skbuff_dma);
+-      kfree(priv->tx_skbuff);
 +      u32 rx_channels_count = priv->plat->rx_queues_to_use;
 +      u32 tx_channels_count = priv->plat->tx_queues_to_use;
 +      u32 chan = 0;
@@ -3800,23 +3807,38 @@
 +
 +      for (chan = 0; chan < tx_channels_count; chan++)
 +              stmmac_start_tx_dma(priv, chan);
-+}
-+
-+/**
+ }
+ 
+ /**
+- *  stmmac_mac_enable_rx_queues - Enable MAC rx queues
+- *  @priv: driver private structure
+- *  Description: It is used for enabling the rx queues in the MAC
 + * stmmac_stop_all_dma - stop all RX and TX DMA channels
 + * @priv: driver private structure
 + * Description:
 + * This stops the RX and TX DMA channels
-+ */
+  */
+-static void stmmac_mac_enable_rx_queues(struct stmmac_priv *priv)
 +static void stmmac_stop_all_dma(struct stmmac_priv *priv)
-+{
+ {
+-      int rx_count = priv->dma_cap.number_rx_queues;
+-      int queue = 0;
 +      u32 rx_channels_count = priv->plat->rx_queues_to_use;
 +      u32 tx_channels_count = priv->plat->tx_queues_to_use;
 +      u32 chan = 0;
-+
+ 
+-      /* If GMAC does not have multiple queues, then this is not necessary*/
+-      if (rx_count == 1)
+-              return;
 +      for (chan = 0; chan < rx_channels_count; chan++)
 +              stmmac_stop_rx_dma(priv, chan);
-+
+ 
+-      /**
+-       *  If the core is synthesized with multiple rx queues / multiple
+-       *  dma channels, then rx queues will be disabled by default.
+-       *  For now only rx queue 0 is enabled.
+-       */
+-      priv->hw->mac->rx_queue_enable(priv->hw, queue);
 +      for (chan = 0; chan < tx_channels_count; chan++)
 +              stmmac_stop_tx_dma(priv, chan);
  }
-- 
2.7.4


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