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Don't attach throttling if the P_BLK is 0, even if the P_BLK_LEN is 6.

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This is more strict but no known systems have this problem.
This commit is contained in:
njl 2003-12-28 22:15:24 +00:00
parent 95eb81d2ab
commit a400451c24
1 changed files with 1 additions and 1 deletions
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2
sys/dev/acpica/acpi_cpu.c
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@ -395,7 +395,7 @@ acpi_cpu_throttle_probe(struct acpi_cpu_softc *sc)
/* If _PTC not present or other failure, try the P_BLK. */
if (sc->cpu_p_cnt == NULL) {
/* The spec says P_BLK must be at least 6 bytes long. */
if (sc->cpu_p_blk_len != 6)
if (sc->cpu_p_blk == 0 || sc->cpu_p_blk_len != 6)
return (ENXIO);
gas.Address = sc->cpu_p_blk;
gas.AddressSpaceId = ACPI_ADR_SPACE_SYSTEM_IO;