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Subject[PATCH net-next 06/13] sunhme: switch to devres
Date
From: Rolf Eike Beer <eike-kernel@sf-tec.de>

This not only removes a lot of code, it also fixes the memleak of the DMA
memory when register_netdev() fails.

Signed-off-by: Rolf Eike Beer <eike-kernel@sf-tec.de>
[ rebased onto net-next/master; fixed error reporting ]
Signed-off-by: Sean Anderson <seanga2@gmail.com>
---

drivers/net/ethernet/sun/sunhme.c | 60 +++++++++----------------------
1 file changed, 17 insertions(+), 43 deletions(-)

diff --git a/drivers/net/ethernet/sun/sunhme.c b/drivers/net/ethernet/sun/sunhme.c
index f0b77bdf51dd..cde0d8062fd3 100644
--- a/drivers/net/ethernet/sun/sunhme.c
+++ b/drivers/net/ethernet/sun/sunhme.c
@@ -2926,7 +2926,7 @@ static int happy_meal_pci_probe(struct pci_dev *pdev,
struct happy_meal *hp;
struct net_device *dev;
void __iomem *hpreg_base;
- unsigned long hpreg_res;
+ struct resource *hpreg_res;
int i, qfe_slot = -1;
char prom_name[64];
u8 addr[ETH_ALEN];
@@ -2943,7 +2943,7 @@ static int happy_meal_pci_probe(struct pci_dev *pdev,
strcpy(prom_name, "SUNW,hme");
#endif

- err = pci_enable_device(pdev);
+ err = pcim_enable_device(pdev);

if (err)
goto err_out;
@@ -2964,10 +2964,11 @@ static int happy_meal_pci_probe(struct pci_dev *pdev,
goto err_out;
}

- dev = alloc_etherdev(sizeof(struct happy_meal));
- err = -ENOMEM;
- if (!dev)
+ dev = devm_alloc_etherdev(&pdev->dev, sizeof(struct happy_meal));
+ if (!dev) {
+ err = -ENOMEM;
goto err_out;
+ }
SET_NETDEV_DEV(dev, &pdev->dev);

hp = netdev_priv(dev);
@@ -2983,25 +2984,26 @@ static int happy_meal_pci_probe(struct pci_dev *pdev,
qp->happy_meals[qfe_slot] = dev;
}

- hpreg_res = pci_resource_start(pdev, 0);
err = -EINVAL;
if ((pci_resource_flags(pdev, 0) & IORESOURCE_IO) != 0) {
printk(KERN_ERR "happymeal(PCI): Cannot find proper PCI device base address.\n");
goto err_out_clear_quattro;
}

- err = pci_request_regions(pdev, DRV_NAME);
- if (err) {
+ hpreg_res = devm_request_region(&pdev->dev, pci_resource_start(pdev, 0),
+ pci_resource_len(pdev, 0), DRV_NAME);
+ if (IS_ERR(hpreg_res)) {
+ err = PTR_ERR(hpreg_res);
printk(KERN_ERR "happymeal(PCI): Cannot obtain PCI resources, "
"aborting.\n");
goto err_out_clear_quattro;
}

- hpreg_base = ioremap(hpreg_res, 0x8000);
+ hpreg_base = pcim_iomap(pdev, 0, 0x8000);
err = -ENOMEM;
if (!hpreg_base) {
printk(KERN_ERR "happymeal(PCI): Unable to remap card memory.\n");
- goto err_out_free_res;
+ goto err_out_clear_quattro;
}

for (i = 0; i < 6; i++) {
@@ -3067,11 +3069,11 @@ static int happy_meal_pci_probe(struct pci_dev *pdev,
hp->happy_bursts = DMA_BURSTBITS;
#endif

- hp->happy_block = dma_alloc_coherent(&pdev->dev, PAGE_SIZE,
- &hp->hblock_dvma, GFP_KERNEL);
+ hp->happy_block = dmam_alloc_coherent(&pdev->dev, PAGE_SIZE,
+ &hp->hblock_dvma, GFP_KERNEL);
err = -ENOMEM;
if (!hp->happy_block)
- goto err_out_iounmap;
+ goto err_out_clear_quattro;

hp->linkcheck = 0;
hp->timer_state = asleep;
@@ -3105,11 +3107,11 @@ static int happy_meal_pci_probe(struct pci_dev *pdev,
happy_meal_set_initial_advertisement(hp);
spin_unlock_irq(&hp->happy_lock);

- err = register_netdev(hp->dev);
+ err = devm_register_netdev(&pdev->dev, dev);
if (err) {
printk(KERN_ERR "happymeal(PCI): Cannot register net device, "
"aborting.\n");
- goto err_out_free_coherent;
+ goto err_out_clear_quattro;
}

pci_set_drvdata(pdev, hp);
@@ -3142,41 +3144,14 @@ static int happy_meal_pci_probe(struct pci_dev *pdev,

return 0;

-err_out_free_coherent:
- dma_free_coherent(hp->dma_dev, PAGE_SIZE,
- hp->happy_block, hp->hblock_dvma);
-
-err_out_iounmap:
- iounmap(hp->gregs);
-
-err_out_free_res:
- pci_release_regions(pdev);
-
err_out_clear_quattro:
if (qp != NULL)
qp->happy_meals[qfe_slot] = NULL;

- free_netdev(dev);
-
err_out:
return err;
}

-static void happy_meal_pci_remove(struct pci_dev *pdev)
-{
- struct happy_meal *hp = pci_get_drvdata(pdev);
- struct net_device *net_dev = hp->dev;
-
- unregister_netdev(net_dev);
-
- dma_free_coherent(hp->dma_dev, PAGE_SIZE,
- hp->happy_block, hp->hblock_dvma);
- iounmap(hp->gregs);
- pci_release_regions(hp->happy_dev);
-
- free_netdev(net_dev);
-}
-
static const struct pci_device_id happymeal_pci_ids[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_SUN, PCI_DEVICE_ID_SUN_HAPPYMEAL) },
{ } /* Terminating entry */
@@ -3188,7 +3163,6 @@ static struct pci_driver hme_pci_driver = {
.name = "hme",
.id_table = happymeal_pci_ids,
.probe = happy_meal_pci_probe,
- .remove = happy_meal_pci_remove,
};

static int __init happy_meal_pci_init(void)
--
2.37.1
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