[PATCH net-next 0/3] r8169: series with smaller improvements

[PATCH net-next 0/3] r8169: series with smaller improvements

[Heiner Kallweit]

This series includes smaller improvements, nothing exciting.

Heiner Kallweit (3):
  r8169: use default watchdog timeout
  r8169: improve rtl8169_irq_mask_and_ack
  r8169: improve a check in rtl_init_one

 drivers/net/ethernet/realtek/r8169.c | 18 ++++++------------
 1 file changed, 6 insertions(+), 12 deletions(-)

-- 
2.19.0

[PATCH net-next 1/3] r8169: use default watchdog timeout

[Heiner Kallweit]

The networking core has a default watchdog timeout of 5s. I see no
need to define an own timeout of 6s which is basically the same.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
---
 drivers/net/ethernet/realtek/r8169.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/net/ethernet/realtek/r8169.c b/drivers/net/ethernet/realtek/r8169.c
index 1843fafb6..dd5822673 100644
--- a/drivers/net/ethernet/realtek/r8169.c
+++ b/drivers/net/ethernet/realtek/r8169.c
@@ -77,8 +77,6 @@ static const int multicast_filter_limit = 32;
 #define R8169_TX_RING_BYTES	(NUM_TX_DESC * sizeof(struct TxDesc))
 #define R8169_RX_RING_BYTES	(NUM_RX_DESC * sizeof(struct RxDesc))
 
-#define RTL8169_TX_TIMEOUT	(6*HZ)
-
 /* write/read MMIO register */
 #define RTL_W8(tp, reg, val8)	writeb((val8), tp->mmio_addr + (reg))
 #define RTL_W16(tp, reg, val16)	writew((val16), tp->mmio_addr + (reg))
@@ -7414,7 +7412,6 @@ static int rtl_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 		dev->dev_addr[i] = RTL_R8(tp, MAC0 + i);
 
 	dev->ethtool_ops = &rtl8169_ethtool_ops;
-	dev->watchdog_timeo = RTL8169_TX_TIMEOUT;
 
 	netif_napi_add(dev, &tp->napi, rtl8169_poll, NAPI_POLL_WEIGHT);
 
-- 
2.19.0

[PATCH net-next 2/3] r8169: improve rtl8169_irq_mask_and_ack

[Heiner Kallweit]

Code can be slightly simplified by acking even events we're not
interested in. In addition add a comment making clear that the
read has no functional purpose and is just a PCI commit.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
---
 drivers/net/ethernet/realtek/r8169.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/realtek/r8169.c b/drivers/net/ethernet/realtek/r8169.c
index dd5822673..2d9e6c186 100644
--- a/drivers/net/ethernet/realtek/r8169.c
+++ b/drivers/net/ethernet/realtek/r8169.c
@@ -1352,7 +1352,8 @@ static void rtl_irq_enable_all(struct rtl8169_private *tp)
 static void rtl8169_irq_mask_and_ack(struct rtl8169_private *tp)
 {
 	rtl_irq_disable(tp);
-	rtl_ack_events(tp, RTL_EVENT_NAPI | tp->event_slow);
+	rtl_ack_events(tp, 0xffff);
+	/* PCI commit */
 	RTL_R8(tp, ChipCmd);
 }
 
@@ -7365,14 +7366,12 @@ static int rtl_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 
 	rtl_init_rxcfg(tp);
 
-	rtl_irq_disable(tp);
+	rtl8169_irq_mask_and_ack(tp);
 
 	rtl_hw_initialize(tp);
 
 	rtl_hw_reset(tp);
 
-	rtl_ack_events(tp, 0xffff);
-
 	pci_set_master(pdev);
 
 	rtl_init_mdio_ops(tp);
-- 
2.19.0

[PATCH net-next 3/3] r8169: improve a check in rtl_init_one

[Heiner Kallweit]

The check for pci_is_pcie() is redundant here because all
chip versions >=18 are PCIe only anyway. In addition use
dma_set_mask_and_coherent() instead of separate calls to
pci_set_dma_mask() and pci_set_consistent_dma_mask().

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
---
 drivers/net/ethernet/realtek/r8169.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/realtek/r8169.c b/drivers/net/ethernet/realtek/r8169.c
index 2d9e6c186..f882be49f 100644
--- a/drivers/net/ethernet/realtek/r8169.c
+++ b/drivers/net/ethernet/realtek/r8169.c
@@ -7346,11 +7346,9 @@ static int rtl_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 
 	tp->cp_cmd = RTL_R16(tp, CPlusCmd);
 
-	if ((sizeof(dma_addr_t) > 4) &&
-	    (use_dac == 1 || (use_dac == -1 && pci_is_pcie(pdev) &&
-			      tp->mac_version >= RTL_GIGA_MAC_VER_18)) &&
-	    !pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) &&
-	    !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64))) {
+	if (sizeof(dma_addr_t) > 4 && (use_dac == 1 || (use_dac == -1 &&
+	    tp->mac_version >= RTL_GIGA_MAC_VER_18)) &&
+	    !dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64))) {
 
 		/* CPlusCmd Dual Access Cycle is only needed for non-PCIe */
 		if (!pci_is_pcie(pdev))
-- 
2.19.0

Re: [PATCH net-next 0/3] r8169: series with smaller improvements

[David Miller]

From: Heiner Kallweit <hkallweit1@gmail.com>
Date: Tue, 25 Sep 2018 07:55:36 +0200

> This series includes smaller improvements, nothing exciting.

Series applied.