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smbios: Print an error on unexpected entry point length on identify

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This helps figuring out quickly why no SMBIOS device appears in this case.

MFC after:      2 weeks
Sponsored by:   The FreeBSD Foundation

(cherry picked from commit fdf08ac1e9f9baac4fcf4af8f3bf7a34d3ea0009)
This commit is contained in:
Olivier Certner 2025-03-03 11:12:33 +01:00
parent 8c9b142b38
commit 7dffa9db45
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GPG key ID: 8CA13040971E2627
1 changed files with 7 additions and 2 deletions
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9
sys/dev/smbios/smbios.c
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@ -87,7 +87,7 @@ smbios_identify (driver_t *driver, device_t parent)
device_t child;
vm_paddr_t addr = 0;
size_t map_size = sizeof(*eps);
int length;
uint8_t length;
if (!device_is_alive(parent))
return;
@ -149,8 +149,13 @@ smbios_identify (driver_t *driver, device_t parent)
if (length == 0x1e && map_size == sizeof(*eps) &&
eps->major_version == 2 && eps->minor_version == 1)
length = map_size;
else
else {
printf("smbios: %s-bit Entry Point: Invalid length: "
"Got %hhu, expected %zu\n",
map_size == sizeof(*eps3) ? "64" : "32",
length, map_size);
goto unmap_return;
}
}
child = BUS_ADD_CHILD(parent, 5, "smbios", -1);