diff options
Diffstat (limited to 'sys/i386')
| -rw-r--r-- | sys/i386/i386/bios.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/sys/i386/i386/bios.c b/sys/i386/i386/bios.c index ca434cbd30b5..332bd6c4dcc9 100644 --- a/sys/i386/i386/bios.c +++ b/sys/i386/i386/bios.c @@ -568,14 +568,20 @@ pnpbios_identify(driver_t *driver, device_t parent) args.seg.data.limit = 0xffff; args.entry = pt->pmentryoffset; - if ((error = bios16(&args, PNP_COUNT_DEVNODES, &ndevs, &bigdev)) || (args.r.eax & 0xff)) + if ((error = bios16(&args, PNP_COUNT_DEVNODES, &ndevs, &bigdev)) || (args.r.eax & 0xff)) { printf("pnpbios: error %d/%x getting device count/size limit\n", error, args.r.eax); + return; + } ndevs &= 0xff; /* clear high byte garbage */ if (bootverbose) printf("pnpbios: %d devices, largest %d bytes\n", ndevs, bigdev); devnodebuf = malloc(bigdev + (sizeof(struct pnp_sysdevargs) - sizeof(struct pnp_sysdev)), M_DEVBUF, M_NOWAIT); + if (devnodebuf == NULL) { + printf("pnpbios: cannot allocate memory, bailing\n"); + return; + } pda = (struct pnp_sysdevargs *)devnodebuf; pd = &pda->node; |