From 1d7974182e1e52a9296a0288c37f1002aaab8edb Mon Sep 17 00:00:00 2001 From: Michael Brown Date: Sat, 15 Dec 2007 19:32:32 +0000 Subject: [PATCH] Overwrite the device descriptor's IRQ number with whatever the legacy 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. --- src/drivers/net/legacy.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/src/drivers/net/legacy.c b/src/drivers/net/legacy.c index 9b82f1ca..32460adb 100644 --- a/src/drivers/net/legacy.c +++ b/src/drivers/net/legacy.c @@ -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;