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Overwrite the device descriptor's IRQ number with whatever the legacy

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driver's probe() routine fills in in nic->irqno.  This is so that
non-interrupt-capable legacy drivers which set nic->irqno=0 will end
up reporting IRQ#0 via PXENV_UNDI_GET_INFORMATION; this in turn means
that the calling PXE NBP will (should) hook the timer interrupt, and
everything will sort of work.
This commit is contained in:
Michael Brown 2007-12-15 19:32:32 +00:00
parent 9747c1a486
commit 1d7974182e
1 changed files with 8 additions and 0 deletions
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8
src/drivers/net/legacy.c
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@ -98,12 +98,20 @@ int legacy_probe ( void *hwdev,
netdev->dev = dev;
nic.node_addr = netdev->ll_addr;
nic.irqno = dev->desc.irq;
if ( ! probe ( &nic, hwdev ) ) {
rc = -ENODEV;
goto err_probe;
}
/* Overwrite the IRQ number. Some legacy devices set
* nic->irqno to 0 in the probe routine to indicate that they
* don't support interrupts; doing this allows the timer
* interrupt to be used instead.
*/
dev->desc.irq = nic.irqno;
if ( ( rc = register_netdev ( netdev ) ) != 0 )
goto err_register;