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Message-Id: <201303220135.51520.sergei.shtylyov@cogentembedded.com>
Date: Fri, 22 Mar 2013 01:35:51 +0300
From: Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To: netdev@...r.kernel.org
Cc: nobuhiro.iwamatsu.yj@...esas.com
Subject: [PATCH v2 3/3] sh_eth: use managed device API
Switch the driver to the managed device API by replacing ioremap() calls with
devm_ioremap_resource() (which will also result in calling request_mem_region()
which the driver forgot to do until now) and k[mz]alloc() with devm_kzalloc() --
this permits to simplify driver's probe()/remove() method cleanup. We can now
remove the ioremap() error messages since the error messages are printed by
devm_ioremap_resource() itself. We can also remove the 'bitbang' field from
'struct sh_eth_private' as we don't need it anymore in order to free the memory
behind it...
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
---
Changes since initial posting:
- removed unused 'mdp' variable in sh_eth_drv_remove().
Sorry, I seem to have missed the unused variable warning... :-/
drivers/net/ethernet/renesas/sh_eth.c | 48 +++++++++-------------------------
drivers/net/ethernet/renesas/sh_eth.h | 1
2 files changed, 13 insertions(+), 36 deletions(-)
Index: net-next/drivers/net/ethernet/renesas/sh_eth.c
===================================================================
--- net-next.orig/drivers/net/ethernet/renesas/sh_eth.c
+++ net-next/drivers/net/ethernet/renesas/sh_eth.c
@@ -2215,7 +2215,6 @@ static void sh_eth_tsu_init(struct sh_et
/* MDIO bus release function */
static int sh_mdio_release(struct net_device *ndev)
{
- struct sh_eth_private *mdp = netdev_priv(ndev);
struct mii_bus *bus = dev_get_drvdata(&ndev->dev);
/* unregister mdio bus */
@@ -2224,15 +2223,9 @@ static int sh_mdio_release(struct net_de
/* remove mdio bus info from net_device */
dev_set_drvdata(&ndev->dev, NULL);
- /* free interrupts memory */
- kfree(bus->irq);
-
/* free bitbang info */
free_mdio_bitbang(bus);
- /* free bitbang memory */
- kfree(mdp->bitbang);
-
return 0;
}
@@ -2245,7 +2238,8 @@ static int sh_mdio_init(struct net_devic
struct sh_eth_private *mdp = netdev_priv(ndev);
/* create bit control struct for PHY */
- bitbang = kzalloc(sizeof(struct bb_info), GFP_KERNEL);
+ bitbang = devm_kzalloc(&ndev->dev, sizeof(struct bb_info),
+ GFP_KERNEL);
if (!bitbang) {
ret = -ENOMEM;
goto out;
@@ -2261,11 +2255,10 @@ static int sh_mdio_init(struct net_devic
bitbang->ctrl.ops = &bb_ops;
/* MII controller setting */
- mdp->bitbang = bitbang;
mdp->mii_bus = alloc_mdio_bitbang(&bitbang->ctrl);
if (!mdp->mii_bus) {
ret = -ENOMEM;
- goto out_free_bitbang;
+ goto out;
}
/* Hook up MII support for ethtool */
@@ -2275,7 +2268,9 @@ static int sh_mdio_init(struct net_devic
mdp->pdev->name, id);
/* PHY IRQ */
- mdp->mii_bus->irq = kmalloc(sizeof(int)*PHY_MAX_ADDR, GFP_KERNEL);
+ mdp->mii_bus->irq = devm_kzalloc(&ndev->dev,
+ sizeof(int) * PHY_MAX_ADDR,
+ GFP_KERNEL);
if (!mdp->mii_bus->irq) {
ret = -ENOMEM;
goto out_free_bus;
@@ -2287,21 +2282,15 @@ static int sh_mdio_init(struct net_devic
/* register mdio bus */
ret = mdiobus_register(mdp->mii_bus);
if (ret)
- goto out_free_irq;
+ goto out_free_bus;
dev_set_drvdata(&ndev->dev, mdp->mii_bus);
return 0;
-out_free_irq:
- kfree(mdp->mii_bus->irq);
-
out_free_bus:
free_mdio_bitbang(mdp->mii_bus);
-out_free_bitbang:
- kfree(bitbang);
-
out:
return ret;
}
@@ -2389,10 +2378,9 @@ static int sh_eth_drv_probe(struct platf
mdp = netdev_priv(ndev);
mdp->num_tx_ring = TX_RING_SIZE;
mdp->num_rx_ring = RX_RING_SIZE;
- mdp->addr = ioremap(res->start, resource_size(res));
- if (mdp->addr == NULL) {
- ret = -ENOMEM;
- dev_err(&pdev->dev, "ioremap failed.\n");
+ mdp->addr = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(mdp->addr)) {
+ ret = PTR_ERR(mdp->addr);
goto out_release;
}
@@ -2438,11 +2426,9 @@ static int sh_eth_drv_probe(struct platf
ret = -ENODEV;
goto out_release;
}
- mdp->tsu_addr = ioremap(rtsu->start,
- resource_size(rtsu));
- if (mdp->tsu_addr == NULL) {
- ret = -ENOMEM;
- dev_err(&pdev->dev, "TSU ioremap failed.\n");
+ mdp->tsu_addr = devm_ioremap_resource(&pdev->dev, rtsu);
+ if (IS_ERR(mdp->tsu_addr)) {
+ ret = PTR_ERR(mdp->tsu_addr);
goto out_release;
}
mdp->port = devno % 2;
@@ -2483,10 +2469,6 @@ out_unregister:
out_release:
/* net_dev free */
- if (mdp && mdp->addr)
- iounmap(mdp->addr);
- if (mdp && mdp->tsu_addr)
- iounmap(mdp->tsu_addr);
if (ndev)
free_netdev(ndev);
@@ -2497,14 +2479,10 @@ out:
static int sh_eth_drv_remove(struct platform_device *pdev)
{
struct net_device *ndev = platform_get_drvdata(pdev);
- struct sh_eth_private *mdp = netdev_priv(ndev);
- if (mdp->cd->tsu)
- iounmap(mdp->tsu_addr);
sh_mdio_release(ndev);
unregister_netdev(ndev);
pm_runtime_disable(&pdev->dev);
- iounmap(mdp->addr);
free_netdev(ndev);
platform_set_drvdata(pdev, NULL);
Index: net-next/drivers/net/ethernet/renesas/sh_eth.h
===================================================================
--- net-next.orig/drivers/net/ethernet/renesas/sh_eth.h
+++ net-next/drivers/net/ethernet/renesas/sh_eth.h
@@ -705,7 +705,6 @@ struct sh_eth_private {
const u16 *reg_offset;
void __iomem *addr;
void __iomem *tsu_addr;
- struct bb_info *bitbang;
u32 num_rx_ring;
u32 num_tx_ring;
dma_addr_t rx_desc_dma;
--
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