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enic: bug fix: don't set netdev->name too early

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Bug fix: don't set netdev->name early before netdev registration.  Setting
netdev->name early with dev_alloc_name() would occasionally cause netdev
registration to fail returning error that device was already registered.
Since we're using netdev->name to name MSI-X vectors, we now need to
move the request_irq after netdev registartion, so move it to ->open.

Signed-off-by: Scott Feldman <scofeldm@cisco.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Scott Feldman 2008-09-24 11:23:53 -07:00 committed by Jeff Garzik
parent 8f4d248cb7
commit 4b75a442d2
2 changed files with 47 additions and 76 deletions
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2
drivers/net/enic/enic.h
View file

@ -33,7 +33,7 @@
#define DRV_NAME "enic"
#define DRV_DESCRIPTION "Cisco 10G Ethernet Driver"
#define DRV_VERSION "0.0.1.18163.472"
#define DRV_VERSION "0.0.1-18163.472-k1"
#define DRV_COPYRIGHT "Copyright 2008 Cisco Systems, Inc"
#define PFX DRV_NAME ": "

121
drivers/net/enic/enic_main.c
View file

@ -1250,13 +1250,28 @@ static int enic_open(struct net_device *netdev)
unsigned int i;
int err;
err = enic_request_intr(enic);
if (err) {
printk(KERN_ERR PFX "%s: Unable to request irq.\n",
netdev->name);
return err;
}
err = enic_notify_set(enic);
if (err) {
printk(KERN_ERR PFX
"%s: Failed to alloc notify buffer, aborting.\n",
netdev->name);
goto err_out_free_intr;
}
for (i = 0; i < enic->rq_count; i++) {
err = vnic_rq_fill(&enic->rq[i], enic_rq_alloc_buf);
if (err) {
printk(KERN_ERR PFX
"%s: Unable to alloc receive buffers.\n",
netdev->name);
return err;
goto err_out_notify_unset;
}
}
@ -1278,6 +1293,13 @@ static int enic_open(struct net_device *netdev)
enic_notify_timer_start(enic);
return 0;
err_out_notify_unset:
vnic_dev_notify_unset(enic->vdev);
err_out_free_intr:
enic_free_intr(enic);
return err;
}
/* rtnl lock is held, process context */
@ -1307,6 +1329,9 @@ static int enic_stop(struct net_device *netdev)
return err;
}
vnic_dev_notify_unset(enic->vdev);
enic_free_intr(enic);
(void)vnic_cq_service(&enic->cq[ENIC_CQ_RQ],
-1, enic_rq_service_drop, NULL);
(void)vnic_cq_service(&enic->cq[ENIC_CQ_WQ],
@ -1592,18 +1617,6 @@ static int __devinit enic_probe(struct pci_dev *pdev,
return -ENOMEM;
}
/* Set the netdev name early so intr vectors are properly
* named and any error msgs can include netdev->name
*/
rtnl_lock();
err = dev_alloc_name(netdev, netdev->name);
rtnl_unlock();
if (err < 0) {
printk(KERN_ERR PFX "Unable to allocate netdev name.\n");
goto err_out_free_netdev;
}
pci_set_drvdata(pdev, netdev);
SET_NETDEV_DEV(netdev, &pdev->dev);
@ -1618,16 +1631,14 @@ static int __devinit enic_probe(struct pci_dev *pdev,
err = pci_enable_device(pdev);
if (err) {
printk(KERN_ERR PFX
"%s: Cannot enable PCI device, aborting.\n",
netdev->name);
"Cannot enable PCI device, aborting.\n");
goto err_out_free_netdev;
}
err = pci_request_regions(pdev, DRV_NAME);
if (err) {
printk(KERN_ERR PFX
"%s: Cannot request PCI regions, aborting.\n",
netdev->name);
"Cannot request PCI regions, aborting.\n");
goto err_out_disable_device;
}
@ -1643,25 +1654,22 @@ static int __devinit enic_probe(struct pci_dev *pdev,
err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
if (err) {
printk(KERN_ERR PFX
"%s: No usable DMA configuration, aborting.\n",
netdev->name);
"No usable DMA configuration, aborting.\n");
goto err_out_release_regions;
}
err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
if (err) {
printk(KERN_ERR PFX
"%s: Unable to obtain 32-bit DMA "
"for consistent allocations, aborting.\n",
netdev->name);
"Unable to obtain 32-bit DMA "
"for consistent allocations, aborting.\n");
goto err_out_release_regions;
}
} else {
err = pci_set_consistent_dma_mask(pdev, DMA_40BIT_MASK);
if (err) {
printk(KERN_ERR PFX
"%s: Unable to obtain 40-bit DMA "
"for consistent allocations, aborting.\n",
netdev->name);
"Unable to obtain 40-bit DMA "
"for consistent allocations, aborting.\n");
goto err_out_release_regions;
}
using_dac = 1;
@ -1672,8 +1680,7 @@ static int __devinit enic_probe(struct pci_dev *pdev,
if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
printk(KERN_ERR PFX
"%s: BAR0 not memory-map'able, aborting.\n",
netdev->name);
"BAR0 not memory-map'able, aborting.\n");
err = -ENODEV;
goto err_out_release_regions;
}
@ -1684,8 +1691,7 @@ static int __devinit enic_probe(struct pci_dev *pdev,
if (!enic->bar0.vaddr) {
printk(KERN_ERR PFX
"%s: Cannot memory-map BAR0 res hdr, aborting.\n",
netdev->name);
"Cannot memory-map BAR0 res hdr, aborting.\n");
err = -ENODEV;
goto err_out_release_regions;
}
@ -1696,8 +1702,7 @@ static int __devinit enic_probe(struct pci_dev *pdev,
enic->vdev = vnic_dev_register(NULL, enic, pdev, &enic->bar0);
if (!enic->vdev) {
printk(KERN_ERR PFX
"%s: vNIC registration failed, aborting.\n",
netdev->name);
"vNIC registration failed, aborting.\n");
err = -ENODEV;
goto err_out_iounmap;
}
@ -1708,8 +1713,7 @@ static int __devinit enic_probe(struct pci_dev *pdev,
err = enic_dev_open(enic);
if (err) {
printk(KERN_ERR PFX
"%s: vNIC dev open failed, aborting.\n",
netdev->name);
"vNIC dev open failed, aborting.\n");
goto err_out_vnic_unregister;
}
@ -1726,8 +1730,7 @@ static int __devinit enic_probe(struct pci_dev *pdev,
err = vnic_dev_init(enic->vdev, 0);
if (err) {
printk(KERN_ERR PFX
"%s: vNIC dev init failed, aborting.\n",
netdev->name);
"vNIC dev init failed, aborting.\n");
goto err_out_dev_close;
}
@ -1737,8 +1740,7 @@ static int __devinit enic_probe(struct pci_dev *pdev,
err = enic_get_vnic_config(enic);
if (err) {
printk(KERN_ERR PFX
"%s: Get vNIC configuration failed, aborting.\n",
netdev->name);
"Get vNIC configuration failed, aborting.\n");
goto err_out_dev_close;
}
@ -1754,18 +1756,7 @@ static int __devinit enic_probe(struct pci_dev *pdev,
err = enic_set_intr_mode(enic);
if (err) {
printk(KERN_ERR PFX
"%s: Failed to set intr mode, aborting.\n",
netdev->name);
goto err_out_dev_close;
}
/* Request interrupt vector(s)
*/
err = enic_request_intr(enic);
if (err) {
printk(KERN_ERR PFX "%s: Unable to request irq.\n",
netdev->name);
"Failed to set intr mode, aborting.\n");
goto err_out_dev_close;
}
@ -1775,8 +1766,7 @@ static int __devinit enic_probe(struct pci_dev *pdev,
err = enic_alloc_vnic_resources(enic);
if (err) {
printk(KERN_ERR PFX
"%s: Failed to alloc vNIC resources, aborting.\n",
netdev->name);
"Failed to alloc vNIC resources, aborting.\n");
goto err_out_free_vnic_resources;
}
@ -1792,19 +1782,7 @@ static int __devinit enic_probe(struct pci_dev *pdev,
ig_vlan_strip_en);
if (err) {
printk(KERN_ERR PFX
"%s: Failed to config nic, aborting.\n",
netdev->name);
goto err_out_free_vnic_resources;
}
/* Setup notification buffer area
*/
err = enic_notify_set(enic);
if (err) {
printk(KERN_ERR PFX
"%s: Failed to alloc notify buffer, aborting.\n",
netdev->name);
"Failed to config nic, aborting.\n");
goto err_out_free_vnic_resources;
}
@ -1831,9 +1809,8 @@ static int __devinit enic_probe(struct pci_dev *pdev,
err = enic_set_mac_addr(netdev, enic->mac_addr);
if (err) {
printk(KERN_ERR PFX
"%s: Invalid MAC address, aborting.\n",
netdev->name);
goto err_out_notify_unset;
"Invalid MAC address, aborting.\n");
goto err_out_free_vnic_resources;
}
netdev->open = enic_open;
@ -1887,18 +1864,14 @@ static int __devinit enic_probe(struct pci_dev *pdev,
err = register_netdev(netdev);
if (err) {
printk(KERN_ERR PFX
"%s: Cannot register net device, aborting.\n",
netdev->name);
goto err_out_notify_unset;
"Cannot register net device, aborting.\n");
goto err_out_free_vnic_resources;
}
return 0;
err_out_notify_unset:
vnic_dev_notify_unset(enic->vdev);
err_out_free_vnic_resources:
enic_free_vnic_resources(enic);
enic_free_intr(enic);
err_out_dev_close:
vnic_dev_close(enic->vdev);
err_out_vnic_unregister:
@ -1926,9 +1899,7 @@ static void __devexit enic_remove(struct pci_dev *pdev)
flush_scheduled_work();
unregister_netdev(netdev);
vnic_dev_notify_unset(enic->vdev);
enic_free_vnic_resources(enic);
enic_free_intr(enic);
vnic_dev_close(enic->vdev);
enic_clear_intr_mode(enic);
vnic_dev_unregister(enic->vdev);