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forcedeth msi bugfix 

pci_enable_msi() replaces the INTx irq number in pci_dev->irq with the
new MSI irq number.
The forcedeth driver did not update the copy in netdevice->irq and
parts of the driver used the stale copy.
See bugzilla.kernel.org, bug 9047.

The patch
- updates netdevice->irq
- replaces all accesses to netdevice->irq with pci_dev->irq.

The patch is against 2.6.23.1. IMHO suitable for both 2.6.23 and 2.6.24

Signed-Off-By: Manfred Spraul <manfred@colorfullife.com>

Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Manfred Spraul 2007-10-17 21:52:33 +02:00 committed by Jeff Garzik
parent db0e8e3f71
commit a7475906bc
1 changed files with 11 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
drivers/net/forcedeth.c
View File

@ -992,7 +992,7 @@ static void nv_enable_irq(struct net_device *dev)
if (np->msi_flags & NV_MSI_X_ENABLED)
enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
else
enable_irq(dev->irq);
enable_irq(np->pci_dev->irq);
} else {
enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
@ -1008,7 +1008,7 @@ static void nv_disable_irq(struct net_device *dev)
if (np->msi_flags & NV_MSI_X_ENABLED)
disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
else
disable_irq(dev->irq);
disable_irq(np->pci_dev->irq);
} else {
disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
@ -1607,7 +1607,7 @@ static void nv_do_rx_refill(unsigned long data)
if (np->msi_flags & NV_MSI_X_ENABLED)
disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
else
disable_irq(dev->irq);
disable_irq(np->pci_dev->irq);
} else {
disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
}
@ -1625,7 +1625,7 @@ static void nv_do_rx_refill(unsigned long data)
if (np->msi_flags & NV_MSI_X_ENABLED)
enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
else
enable_irq(dev->irq);
enable_irq(np->pci_dev->irq);
} else {
enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
}
@ -3560,10 +3560,12 @@ static int nv_request_irq(struct net_device *dev, int intr_test)
if (ret != 0 && np->msi_flags & NV_MSI_CAPABLE) {
if ((ret = pci_enable_msi(np->pci_dev)) == 0) {
np->msi_flags |= NV_MSI_ENABLED;
dev->irq = np->pci_dev->irq;
if (request_irq(np->pci_dev->irq, handler, IRQF_SHARED, dev->name, dev) != 0) {
printk(KERN_INFO "forcedeth: request_irq failed %d\n", ret);
pci_disable_msi(np->pci_dev);
np->msi_flags &= ~NV_MSI_ENABLED;
dev->irq = np->pci_dev->irq;
goto out_err;
}
@ -3626,7 +3628,7 @@ static void nv_do_nic_poll(unsigned long data)
if (np->msi_flags & NV_MSI_X_ENABLED)
disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
else
disable_irq_lockdep(dev->irq);
disable_irq_lockdep(np->pci_dev->irq);
mask = np->irqmask;
} else {
if (np->nic_poll_irq & NVREG_IRQ_RX_ALL) {
@ -3644,6 +3646,8 @@ static void nv_do_nic_poll(unsigned long data)
}
np->nic_poll_irq = 0;
/* disable_irq() contains synchronize_irq, thus no irq handler can run now */
if (np->recover_error) {
np->recover_error = 0;
printk(KERN_INFO "forcedeth: MAC in recoverable error state\n");
@ -3680,7 +3684,6 @@ static void nv_do_nic_poll(unsigned long data)
}
}
/* FIXME: Do we need synchronize_irq(dev->irq) here? */
writel(mask, base + NvRegIrqMask);
pci_push(base);
@ -3693,7 +3696,7 @@ static void nv_do_nic_poll(unsigned long data)
if (np->msi_flags & NV_MSI_X_ENABLED)
enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
else
enable_irq_lockdep(dev->irq);
enable_irq_lockdep(np->pci_dev->irq);
} else {
if (np->nic_poll_irq & NVREG_IRQ_RX_ALL) {
nv_nic_irq_rx(0, dev);
@ -4950,7 +4953,7 @@ static int nv_close(struct net_device *dev)
#ifdef CONFIG_FORCEDETH_NAPI
napi_disable(&np->napi);
#endif
synchronize_irq(dev->irq);
synchronize_irq(np->pci_dev->irq);
del_timer_sync(&np->oom_kick);
del_timer_sync(&np->nic_poll);