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- Disable AGP on ALI chipsets if aperture size is 0.

Browse source 
- Fail in agp_alloc_gatt if the aperture size is 0 instead of panicing in
  contigmalloc.

Reported by:	Bjoern Fischer <bfischer@Techfak.Uni-Bielefeld.DE>
Reviewed by:	jhb
MFC after:	1 week
This commit is contained in:
Eric Anholt 2003-11-11 21:49:18 +00:00
parent 599bcd064c
commit a6cb9d8e99
4 changed files with 18 additions and 0 deletions
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5
sys/dev/agp/agp.c
View file

@ -175,6 +175,11 @@ agp_alloc_gatt(device_t dev)
"allocating GATT for aperture of size %dM\n",
apsize / (1024*1024));
if (entries == 0) {
device_printf(dev, "bad aperture size\n");
return NULL;
}
gatt = malloc(sizeof(struct agp_gatt), M_AGP, M_NOWAIT);
if (!gatt)
return 0;

4
sys/dev/agp/agp_ali.c
View file

@ -102,6 +102,10 @@ agp_ali_attach(device_t dev)
return error;
sc->initial_aperture = AGP_GET_APERTURE(dev);
if (sc->initial_aperture == 0) {
device_printf(dev, "bad initial aperture size, disabling\n");
return ENXIO;
}
for (;;) {
gatt = agp_alloc_gatt(dev);

5
sys/pci/agp.c
View file

@ -175,6 +175,11 @@ agp_alloc_gatt(device_t dev)
"allocating GATT for aperture of size %dM\n",
apsize / (1024*1024));
if (entries == 0) {
device_printf(dev, "bad aperture size\n");
return NULL;
}
gatt = malloc(sizeof(struct agp_gatt), M_AGP, M_NOWAIT);
if (!gatt)
return 0;

4
sys/pci/agp_ali.c
View file

@ -102,6 +102,10 @@ agp_ali_attach(device_t dev)
return error;
sc->initial_aperture = AGP_GET_APERTURE(dev);
if (sc->initial_aperture == 0) {
device_printf(dev, "bad initial aperture size, disabling\n");
return ENXIO;
}
for (;;) {
gatt = agp_alloc_gatt(dev);