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| author | Alan Cox <alan@lxorguk.ukuu.org.uk> | 2007-07-10 17:05:16 +0100 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2007-07-10 12:29:24 -0400 |
| commit | f49343a54864b98333b98706accba66aa75a0c16 (patch) | |
| tree | e8656c82986674842ef0154988e7df7aeb817d13 /drivers/net/ioc3-eth.c | |
| parent | 44e4925e4601961b9bd1982008a55fce865d318c (diff) | |
| download | lwn-f49343a54864b98333b98706accba66aa75a0c16.tar.gz lwn-f49343a54864b98333b98706accba66aa75a0c16.zip | |
IOC3: Switch to pci refcounting safe APIs
Convert the IOC3 driver to use ref counting pci interfaces so that we can
obsolete the (usually unsafe) pci_find_{slot/device} interfaces and avoid
future authors writing hotplug-unsafe device drivers.
Signed-off-by: Alan Cox <alan@redhat.com>
Build fixes:
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/net/ioc3-eth.c')
| -rw-r--r-- | drivers/net/ioc3-eth.c | 41 |
1 files changed, 24 insertions, 17 deletions
diff --git a/drivers/net/ioc3-eth.c b/drivers/net/ioc3-eth.c index f749e07c6425..3ca1e8ece548 100644 --- a/drivers/net/ioc3-eth.c +++ b/drivers/net/ioc3-eth.c @@ -352,13 +352,12 @@ static u64 nic_find(struct ioc3 *ioc3, int *last) static int nic_init(struct ioc3 *ioc3) { - const char *type; + const char *unknown = "unknown"; + const char *type = unknown; u8 crc; u8 serial[6]; int save = 0, i; - type = "unknown"; - while (1) { u64 reg; reg = nic_find(ioc3, &save); @@ -392,7 +391,7 @@ static int nic_init(struct ioc3 *ioc3) } printk("Found %s NIC", type); - if (type != "unknown") { + if (type != unknown) { printk (" registration number %02x:%02x:%02x:%02x:%02x:%02x," " CRC %02x", serial[0], serial[1], serial[2], serial[3], serial[4], serial[5], crc); @@ -1103,20 +1102,28 @@ static int ioc3_close(struct net_device *dev) * MiniDINs; all other subdevices are left swinging in the wind, leave * them disabled. */ -static inline int ioc3_is_menet(struct pci_dev *pdev) + +static int ioc3_adjacent_is_ioc3(struct pci_dev *pdev, int slot) +{ + struct pci_dev *dev = pci_get_slot(pdev->bus, PCI_DEVFN(slot, 0)); + int ret = 0; + + if (dev) { + if (dev->vendor == PCI_VENDOR_ID_SGI && + dev->device == PCI_DEVICE_ID_SGI_IOC3) + ret = 1; + pci_dev_put(dev); + } + + return ret; +} + +static int ioc3_is_menet(struct pci_dev *pdev) { - struct pci_dev *dev; - - return pdev->bus->parent == NULL - && (dev = pci_find_slot(pdev->bus->number, PCI_DEVFN(0, 0))) - && dev->vendor == PCI_VENDOR_ID_SGI - && dev->device == PCI_DEVICE_ID_SGI_IOC3 - && (dev = pci_find_slot(pdev->bus->number, PCI_DEVFN(1, 0))) - && dev->vendor == PCI_VENDOR_ID_SGI - && dev->device == PCI_DEVICE_ID_SGI_IOC3 - && (dev = pci_find_slot(pdev->bus->number, PCI_DEVFN(2, 0))) - && dev->vendor == PCI_VENDOR_ID_SGI - && dev->device == PCI_DEVICE_ID_SGI_IOC3; + return pdev->bus->parent == NULL && + ioc3_adjacent_is_ioc3(pdev, 0) && + ioc3_adjacent_is_ioc3(pdev, 1) && + ioc3_adjacent_is_ioc3(pdev, 2); } #ifdef CONFIG_SERIAL_8250 |