From 914d9b2711ddb86c3480cbdac74a55b453e491bc Mon Sep 17 00:00:00 2001 From: Rolf Eike Beer Date: Fri, 23 Sep 2022 21:53:32 -0400 Subject: [PATCH] sunhme: switch to devres 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 [ rebased onto net-next/master; fixed error reporting ] Signed-off-by: Sean Anderson Signed-off-by: Jakub Kicinski --- drivers/net/ethernet/sun/sunhme.c | 55 ++++++++++----------------------------- 1 file changed, 14 insertions(+), 41 deletions(-) diff --git a/drivers/net/ethernet/sun/sunhme.c b/drivers/net/ethernet/sun/sunhme.c index 26b5e44a6f2e..7d6825c573a2 100644 --- a/drivers/net/ethernet/sun/sunhme.c +++ b/drivers/net/ethernet/sun/sunhme.c @@ -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) -- 2.11.0