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3c59x: fix PCI resource management

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[ Upstream commit 4b264a1676 ]

The driver wrongly claimed I/O ports at an address returned by pci_iomap() --
even if it was passed an MMIO address.  Fix this by claiming/releasing all PCI
resources in the PCI driver's probe()/remove() methods instead and get rid of
'must_free_region' flag weirdness (why would Cardbus claim anything for us?).

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sergei Shtylyov 2013-05-09 11:14:07 +00:00 committed by Greg Kroah-Hartman
parent 555f6a1e0b
commit 9faef35be7
1 changed files with 13 additions and 12 deletions
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25
drivers/net/ethernet/3com/3c59x.c
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@ -632,7 +632,6 @@ struct vortex_private {
pm_state_valid:1, /* pci_dev->saved_config_space has sane contents */
open:1,
medialock:1,
must_free_region:1, /* Flag: if zero, Cardbus owns the I/O region */
large_frames:1, /* accept large frames */
handling_irq:1; /* private in_irq indicator */
/* {get|set}_wol operations are already serialized by rtnl.
@ -1012,6 +1011,12 @@ static int __devinit vortex_init_one(struct pci_dev *pdev,
if (rc < 0)
goto out;
rc = pci_request_regions(pdev, DRV_NAME);
if (rc < 0) {
pci_disable_device(pdev);
goto out;
}
unit = vortex_cards_found;
if (global_use_mmio < 0 && (unit >= MAX_UNITS || use_mmio[unit] < 0)) {
@ -1027,6 +1032,7 @@ static int __devinit vortex_init_one(struct pci_dev *pdev,
if (!ioaddr) /* If mapping fails, fall-back to BAR 0... */
ioaddr = pci_iomap(pdev, 0, 0);
if (!ioaddr) {
pci_release_regions(pdev);
pci_disable_device(pdev);
rc = -ENOMEM;
goto out;
@ -1036,6 +1042,7 @@ static int __devinit vortex_init_one(struct pci_dev *pdev,
ent->driver_data, unit);
if (rc < 0) {
pci_iounmap(pdev, ioaddr);
pci_release_regions(pdev);
pci_disable_device(pdev);
goto out;
}
@ -1179,11 +1186,6 @@ static int __devinit vortex_probe1(struct device *gendev,
/* PCI-only startup logic */
if (pdev) {
/* EISA resources already marked, so only PCI needs to do this here */
/* Ignore return value, because Cardbus drivers already allocate for us */
if (request_region(dev->base_addr, vci->io_size, print_name) != NULL)
vp->must_free_region = 1;
/* enable bus-mastering if necessary */
if (vci->flags & PCI_USES_MASTER)
pci_set_master(pdev);
@ -1221,7 +1223,7 @@ static int __devinit vortex_probe1(struct device *gendev,
&vp->rx_ring_dma);
retval = -ENOMEM;
if (!vp->rx_ring)
goto free_region;
goto free_device;
vp->tx_ring = (struct boom_tx_desc *)(vp->rx_ring + RX_RING_SIZE);
vp->tx_ring_dma = vp->rx_ring_dma + sizeof(struct boom_rx_desc) * RX_RING_SIZE;
@ -1486,9 +1488,7 @@ static int __devinit vortex_probe1(struct device *gendev,
+ sizeof(struct boom_tx_desc) * TX_RING_SIZE,
vp->rx_ring,
vp->rx_ring_dma);
free_region:
if (vp->must_free_region)
release_region(dev->base_addr, vci->io_size);
free_device:
free_netdev(dev);
pr_err(PFX "vortex_probe1 fails. Returns %d\n", retval);
out:
@ -3256,8 +3256,9 @@ static void __devexit vortex_remove_one(struct pci_dev *pdev)
+ sizeof(struct boom_tx_desc) * TX_RING_SIZE,
vp->rx_ring,
vp->rx_ring_dma);
if (vp->must_free_region)
release_region(dev->base_addr, vp->io_size);
pci_release_regions(pdev);
free_netdev(dev);
}