[PATCH net-next]r8169:Correct size from dma_alloc_coherent Maximum size register with size argument from dma_alloc_coherent old variable R8169_RX_RING_BYTES return to much value 17000 instead of value of rx_buf_sz, another issue is on rtl8169_init_ring func, Tx buffer and Rx buffer have same number off descriptors NUM_RX_DESC, not others values.

[Corcodel Marian]

Signed-off-by: Corcodel Marian <corcodel.mar...@gmail.com>
---
 drivers/net/ethernet/realtek/r8169.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/realtek/r8169.c 
b/drivers/net/ethernet/realtek/r8169.c
index 3df51fa..561c23a 100644
--- a/drivers/net/ethernet/realtek/r8169.c
+++ b/drivers/net/ethernet/realtek/r8169.c
@@ -5200,6 +5200,7 @@ static void rtl_set_rx_tx_desc_registers(struct 
rtl8169_private *tp,
         * register to be written before TxDescAddrLow to work.
         * Switching from MMIO to I/O access fixes the issue as well.
         */
+       
        RTL_W32(TxDescStartAddrHigh, ((u64) tp->TxPhyAddr) >> 32);
        RTL_W32(TxDescStartAddrLow, ((u64) tp->TxPhyAddr) & DMA_BIT_MASK(32));
        RTL_W32(RxDescAddrHigh, ((u64) tp->RxPhyAddr) >> 32);
@@ -6724,8 +6725,8 @@ static int rtl8169_init_ring(struct net_device *dev)
 
        rtl8169_init_ring_indexes(tp);
 
-       memset(tp->tx_skb, 0x0, NUM_TX_DESC * sizeof(struct ring_info));
-       memset(tp->Rx_databuff, 0x0, NUM_RX_DESC * sizeof(void *));
+       memset(tp->tx_skb, 0x0, NUM_RX_DESC);
+       memset(tp->Rx_databuff, 0x0, NUM_RX_DESC);
 
        return rtl8169_rx_fill(tp);
 }
@@ -7555,7 +7556,7 @@ static int rtl8169_close(struct net_device *dev)
 
        free_irq(pdev->irq, dev);
 
-       dma_free_coherent(&pdev->dev, R8169_RX_RING_BYTES, tp->RxDescArray,
+       dma_free_coherent(&pdev->dev, rx_buf_sz, tp->RxDescArray,
                          tp->RxPhyAddr);
        dma_free_coherent(&pdev->dev, R8169_TX_RING_BYTES, tp->TxDescArray,
                          tp->TxPhyAddr);
@@ -7594,7 +7595,7 @@ static int rtl_open(struct net_device *dev)
        if (!tp->TxDescArray)
                goto err_pm_runtime_put;
 
-       tp->RxDescArray = dma_alloc_coherent(&pdev->dev, R8169_RX_RING_BYTES,
+       tp->RxDescArray = dma_alloc_coherent(&pdev->dev, rx_buf_sz,
                                             &tp->RxPhyAddr, GFP_KERNEL);
        if (!tp->RxDescArray)
                goto err_free_tx_0;
@@ -7644,7 +7645,7 @@ err_release_fw_2:
        rtl_release_firmware(tp);
        rtl8169_rx_clear(tp);
 err_free_rx_1:
-       dma_free_coherent(&pdev->dev, R8169_RX_RING_BYTES, tp->RxDescArray,
+       dma_free_coherent(&pdev->dev, rx_buf_sz, tp->RxDescArray,
                          tp->RxPhyAddr);
        tp->RxDescArray = NULL;
 err_free_tx_0:
-- 
2.1.4

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