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If the CLK_VAL register is 0 bits wide, the system does not support

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CPU throttling, so don't do some bogus math to check it.
This commit is contained in:
Mike Smith 2002-01-02 10:53:10 +00:00
parent 283004853b
commit 3e759f3681
1 changed files with 12 additions and 10 deletions
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22
sys/dev/acpica/acpi_cpu.c
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@ -161,16 +161,18 @@ acpi_cpu_attach(device_t dev)
cpu_pstate_cnt = AcpiGbl_FADT->PstateCnt;
/* validate the offset/width */
duty_end = cpu_duty_offset + cpu_duty_width - 1;
/* check that it fits */
if (duty_end > 31) {
printf("acpi_cpu: CLK_VAL field overflows P_CNT register\n");
cpu_duty_width = 0;
}
/* check for overlap with the THT_EN bit */
if ((cpu_duty_offset <= 4) && (duty_end >= 4)) {
printf("acpi_cpu: CLK_VAL field overlaps THT_EN bit\n");
cpu_duty_width = 0;
if (cpu_duty_width > 0) {
duty_end = cpu_duty_offset + cpu_duty_width - 1;
/* check that it fits */
if (duty_end > 31) {
printf("acpi_cpu: CLK_VAL field overflows P_CNT register\n");
cpu_duty_width = 0;
}
/* check for overlap with the THT_EN bit */
if ((cpu_duty_offset <= 4) && (duty_end >= 4)) {
printf("acpi_cpu: CLK_VAL field overlaps THT_EN bit\n");
cpu_duty_width = 0;
}
}
/*