diff options
| -rw-r--r-- | sys/dev/agp/agp.c | 5 | ||||
| -rw-r--r-- | sys/dev/agp/agp_ali.c | 4 | ||||
| -rw-r--r-- | sys/pci/agp.c | 5 | ||||
| -rw-r--r-- | sys/pci/agp_ali.c | 4 |
4 files changed, 18 insertions, 0 deletions
diff --git a/sys/dev/agp/agp.c b/sys/dev/agp/agp.c index 7bf49b2..e664459 100644 --- a/sys/dev/agp/agp.c +++ b/sys/dev/agp/agp.c @@ -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; diff --git a/sys/dev/agp/agp_ali.c b/sys/dev/agp/agp_ali.c index b9b2c13..fc99574 100644 --- a/sys/dev/agp/agp_ali.c +++ b/sys/dev/agp/agp_ali.c @@ -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); diff --git a/sys/pci/agp.c b/sys/pci/agp.c index 7bf49b2..e664459 100644 --- a/sys/pci/agp.c +++ b/sys/pci/agp.c @@ -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; diff --git a/sys/pci/agp_ali.c b/sys/pci/agp_ali.c index b9b2c13..fc99574 100644 --- a/sys/pci/agp_ali.c +++ b/sys/pci/agp_ali.c @@ -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); |
