diff options
| author | Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl> | 2016-02-27 11:30:22 -0500 |
|---|---|---|
| committer | Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl> | 2016-03-04 21:45:45 -0500 |
| commit | 67a47c609683559dddba0c8e3875723010a088e1 (patch) | |
| tree | c152dbda74bfcb594b577679ce94a515faaeb431 /src/shared/acpi-fpdt.c | |
| parent | a4bfedec701fb4433923c338b623d1d3e21ed620 (diff) | |
shared/acpi-fpdt: use ENODATA for missing data and skip test
This data is simply missing on non-UEFI systems, and it is useful
to distinguish that from corrupted data.
Diffstat (limited to 'src/shared/acpi-fpdt.c')
| -rw-r--r-- | src/shared/acpi-fpdt.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/shared/acpi-fpdt.c b/src/shared/acpi-fpdt.c index 3cb9e781fd..6779691c28 100644 --- a/src/shared/acpi-fpdt.c +++ b/src/shared/acpi-fpdt.c @@ -119,7 +119,7 @@ int acpi_get_boot_usec(usec_t *loader_start, usec_t *loader_exit) { } if (ptr == 0) - return -EINVAL; + return -ENODATA; /* read Firmware Basic Boot Performance Data Record */ fd = open("/dev/mem", O_CLOEXEC|O_RDONLY); @@ -146,6 +146,10 @@ int acpi_get_boot_usec(usec_t *loader_start, usec_t *loader_exit) { if (brec.type != ACPI_FPDT_BOOT_REC) return -EINVAL; + if (brec.exit_services_exit == 0) + /* Non-UEFI compatible boot. */ + return -ENODATA; + if (brec.startup_start == 0 || brec.exit_services_exit < brec.startup_start) return -EINVAL; if (brec.exit_services_exit > NSEC_PER_HOUR) |