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Date: Fri, 23 Sep 2022 21:53:32 -0400
From: Sean Anderson <seanga2@...il.com>
To: "David S . Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org
Cc: Nick Bowler <nbowler@...conx.ca>,
Rolf Eike Beer <eike-kernel@...tec.de>,
Zheyu Ma <zheyuma97@...il.com>,
linux-kernel@...r.kernel.org (open list),
Sean Anderson <seanga2@...il.com>
Subject: [PATCH net-next v2 06/13] sunhme: switch to devres
From: Rolf Eike Beer <eike-kernel@...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@...tec.de>
[ rebased onto net-next/master; fixed error reporting ]
Signed-off-by: Sean Anderson <seanga2@...il.com>
---
(no changes since v1)
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)
--
2.37.1
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