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sunhme: switch to devres

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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>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Rolf Eike Beer 2022-09-23 21:53:32 -04:00 committed by Jakub Kicinski
parent 5b3dc6dda6
commit 914d9b2711
1 changed files with 14 additions and 41 deletions
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55
drivers/net/ethernet/sun/sunhme.c
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@ -2924,7 +2924,7 @@ 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];
@ -2941,7 +2941,7 @@ 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;
pci_set_master(pdev);
@ -2961,7 +2961,7 @@ static int happy_meal_pci_probe(struct pci_dev *pdev,
goto err_out;
}
dev = alloc_etherdev(sizeof(struct happy_meal));
dev = devm_alloc_etherdev(&pdev->dev, sizeof(struct happy_meal));
if (!dev) {
err = -ENOMEM;
goto err_out;
@ -2981,25 +2981,26 @@ 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);
if (!hpreg_base) {
err = -ENOMEM;
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++) {
@ -3065,11 +3066,11 @@ 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);
if (!hp->happy_block) {
err = -ENOMEM;
goto err_out_iounmap;
goto err_out_clear_quattro;
}
hp->linkcheck = 0;
@ -3104,11 +3105,11 @@ 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);
@ -3141,41 +3142,14 @@ 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 */
@ -3187,7 +3161,6 @@ 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)