diff options
| author | cinap_lenrek <cinap_lenrek@gmx.de> | 2012-09-15 03:17:17 +0200 |
|---|---|---|
| committer | cinap_lenrek <cinap_lenrek@gmx.de> | 2012-09-15 03:17:17 +0200 |
| commit | 1d62e1d8c88c4698a7d8da6a510fb1c7d6da9cf1 (patch) | |
| tree | 9a270d4f3dc7f4c3d07552ec6de3d6b9c3f28588 /sys/src/9/pc/trap.c | |
| parent | 336df4d4aed17394d5a5fc8ae1f1c24df4c1cf5e (diff) | |
usb: dont give up on unassigned pci irq line in hci driver
sometimes, the bios does not assign a interrupt line for pci
devices. this should not be fatal in case of mp ineterrupts
as long as there is intpin or msi can be used.
warn in intrenable() if we hit such a interrupt and set
irq to -1 to prevent it from getting enabled on the pic
or as isa interrupt in apic mode.
Diffstat (limited to 'sys/src/9/pc/trap.c')
| -rw-r--r-- | sys/src/9/pc/trap.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sys/src/9/pc/trap.c b/sys/src/9/pc/trap.c index 0593784fb..65915e06c 100644 --- a/sys/src/9/pc/trap.c +++ b/sys/src/9/pc/trap.c @@ -40,6 +40,12 @@ intrenable(int irq, void (*f)(Ureg*, void*), void* a, int tbdf, char *name) return; } + if(tbdf != BUSUNKNOWN && (irq == 0xff || irq == 0)){ + print("intrenable: got unassigned irq %d, tbdf 0x%uX for %s\n", + irq, tbdf, name); + irq = -1; + } + if((v = xalloc(sizeof(Vctl))) == nil) panic("intrenable: out of memory"); v->isintr = 1; |