140 lines
4.0 KiB
Diff
140 lines
4.0 KiB
Diff
From 34a5102c3235c470a6c77fba16cb971964d9c136 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
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Date: Tue, 31 Jan 2017 19:37:54 +0100
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Subject: [PATCH 1/3] net: bgmac: allocate struct bgmac just once & don't copy
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it
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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So far were were allocating struct bgmac in 3 places: platform code,
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bcma code and shared bgmac_enet_probe function. The reason for this was
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bgmac_enet_probe:
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1) Requiring early-filled struct bgmac
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2) Calling alloc_etherdev on its own in order to use netdev_priv later
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This solution got few drawbacks:
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1) Was duplicating allocating code
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2) Required copying early-filled struct
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3) Resulted in platform/bcma code having access only to unused struct
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Solve this situation by simply extracting some probe code into the new
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bgmac_alloc function.
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Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
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Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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---
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drivers/net/ethernet/broadcom/bgmac-bcma.c | 4 +---
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drivers/net/ethernet/broadcom/bgmac-platform.c | 2 +-
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drivers/net/ethernet/broadcom/bgmac.c | 25 +++++++++++++++++--------
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drivers/net/ethernet/broadcom/bgmac.h | 3 ++-
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4 files changed, 21 insertions(+), 13 deletions(-)
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--- a/drivers/net/ethernet/broadcom/bgmac-bcma.c
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+++ b/drivers/net/ethernet/broadcom/bgmac-bcma.c
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@@ -99,12 +99,11 @@ static int bgmac_probe(struct bcma_devic
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u8 *mac;
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int err;
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- bgmac = kzalloc(sizeof(*bgmac), GFP_KERNEL);
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+ bgmac = bgmac_alloc(&core->dev);
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if (!bgmac)
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return -ENOMEM;
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bgmac->bcma.core = core;
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- bgmac->dev = &core->dev;
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bgmac->dma_dev = core->dma_dev;
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bgmac->irq = core->irq;
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@@ -285,7 +284,6 @@ static int bgmac_probe(struct bcma_devic
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err1:
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bcma_mdio_mii_unregister(bgmac->mii_bus);
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err:
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- kfree(bgmac);
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bcma_set_drvdata(core, NULL);
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return err;
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--- a/drivers/net/ethernet/broadcom/bgmac-platform.c
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+++ b/drivers/net/ethernet/broadcom/bgmac-platform.c
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@@ -93,7 +93,7 @@ static int bgmac_probe(struct platform_d
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struct resource *regs;
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const u8 *mac_addr;
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- bgmac = devm_kzalloc(&pdev->dev, sizeof(*bgmac), GFP_KERNEL);
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+ bgmac = bgmac_alloc(&pdev->dev);
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if (!bgmac)
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return -ENOMEM;
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--- a/drivers/net/ethernet/broadcom/bgmac.c
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+++ b/drivers/net/ethernet/broadcom/bgmac.c
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@@ -1459,22 +1459,32 @@ static int bgmac_phy_connect(struct bgma
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return 0;
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}
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-int bgmac_enet_probe(struct bgmac *info)
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+struct bgmac *bgmac_alloc(struct device *dev)
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{
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struct net_device *net_dev;
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struct bgmac *bgmac;
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- int err;
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/* Allocation and references */
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- net_dev = alloc_etherdev(sizeof(*bgmac));
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+ net_dev = devm_alloc_etherdev(dev, sizeof(*bgmac));
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if (!net_dev)
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- return -ENOMEM;
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+ return NULL;
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net_dev->netdev_ops = &bgmac_netdev_ops;
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net_dev->ethtool_ops = &bgmac_ethtool_ops;
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+
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bgmac = netdev_priv(net_dev);
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- memcpy(bgmac, info, sizeof(*bgmac));
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+ bgmac->dev = dev;
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bgmac->net_dev = net_dev;
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+
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+ return bgmac;
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+}
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+EXPORT_SYMBOL_GPL(bgmac_alloc);
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+
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+int bgmac_enet_probe(struct bgmac *bgmac)
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+{
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+ struct net_device *net_dev = bgmac->net_dev;
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+ int err;
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+
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net_dev->irq = bgmac->irq;
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SET_NETDEV_DEV(net_dev, bgmac->dev);
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@@ -1501,7 +1511,7 @@ int bgmac_enet_probe(struct bgmac *info)
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err = bgmac_dma_alloc(bgmac);
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if (err) {
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dev_err(bgmac->dev, "Unable to alloc memory for DMA\n");
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- goto err_netdev_free;
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+ goto err_out;
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}
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bgmac->int_mask = BGMAC_IS_ERRMASK | BGMAC_IS_RX | BGMAC_IS_TX_MASK;
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@@ -1537,8 +1547,7 @@ err_phy_disconnect:
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phy_disconnect(net_dev->phydev);
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err_dma_free:
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bgmac_dma_free(bgmac);
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-err_netdev_free:
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- free_netdev(net_dev);
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+err_out:
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return err;
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}
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--- a/drivers/net/ethernet/broadcom/bgmac.h
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+++ b/drivers/net/ethernet/broadcom/bgmac.h
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@@ -515,7 +515,8 @@ struct bgmac {
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u32 set);
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};
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-int bgmac_enet_probe(struct bgmac *info);
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+struct bgmac *bgmac_alloc(struct device *dev);
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+int bgmac_enet_probe(struct bgmac *bgmac);
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void bgmac_enet_remove(struct bgmac *bgmac);
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struct mii_bus *bcma_mdio_mii_register(struct bcma_device *core, u8 phyaddr);
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