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Instead of using a static, check for the FADT revision before using it.

Browse Source 
This fixes a bug where acpidump -d crashed (but not -t -d).

Submitted by:	Alex Vasylenko <lxv@omut.org>
This commit is contained in:
Nate Lawson 2004-04-18 05:21:36 +00:00
parent ba8fc6ca62
commit c2962974d0
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=128382
1 changed files with 20 additions and 12 deletions
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32
usr.sbin/acpi/acpidump/acpi.c
View File

@ -45,6 +45,7 @@
static void acpi_print_string(char *s, size_t length);
static void acpi_print_gas(struct ACPIgas *gas);
static int acpi_get_fadt_revision(struct FADTbody *fadt);
static void acpi_handle_fadt(struct FADTbody *fadt);
static void acpi_print_cpu(u_char cpu_id);
static void acpi_print_local_apic(u_char cpu_id, u_char apic_id,
@ -67,9 +68,6 @@ static void acpi_handle_rsdt(struct ACPIsdt *rsdp);
/* Size of an address. 32-bit for ACPI 1.0, 64-bit for ACPI 2.0 and up. */
static int addr_size;
/* The FADT revision indicates whether we use the DSDT or X_DSDT addresses. */
static int fadt_revision;
static void
acpi_print_string(char *s, size_t length)
{
@ -118,11 +116,11 @@ acpi_print_gas(struct ACPIgas *gas)
}
}
static void
acpi_handle_fadt(struct FADTbody *fadt)
/* The FADT revision indicates whether we use the DSDT or X_DSDT addresses. */
static int
acpi_get_fadt_revision(struct FADTbody *fadt)
{
struct ACPIsdt *dsdp;
struct FACSbody *facs;
int fadt_revision;
/* Set the FADT revision separately from the RSDP version. */
if (addr_size == 8) {
@ -138,11 +136,21 @@ acpi_handle_fadt(struct FADTbody *fadt)
if (fadt->facs_ptr != 0 &&
(fadt->x_facs_ptr & 0xffffffff) != fadt->facs_ptr)
fadt_revision = 1;
} else {
} else
fadt_revision = 1;
}
return (fadt_revision);
}
static void
acpi_handle_fadt(struct FADTbody *fadt)
{
struct ACPIsdt *dsdp;
struct FACSbody *facs;
int fadt_revision;
acpi_print_fadt(fadt);
fadt_revision = acpi_get_fadt_revision(fadt);
if (fadt_revision == 1)
facs = (struct FACSbody *)acpi_map_sdt(fadt->facs_ptr);
else
@ -520,7 +528,7 @@ acpi_print_fadt(struct FADTbody *fadt)
acpi_print_gas(&fadt->reset_reg);
printf(", RESET_VALUE=%#x\n", fadt->reset_value);
}
if (fadt_revision > 1) {
if (acpi_get_fadt_revision(fadt) > 1) {
printf("\tX_FACS=0x%08lx, ", (u_long)fadt->x_facs_ptr);
printf("X_DSDT=0x%08lx\n", (u_long)fadt->x_dsdt_ptr);
printf("\tX_PM1a_EVT_BLK=");
@ -804,10 +812,10 @@ sdt_from_rsdt(struct ACPIsdt *rsdt, const char *sig)
struct ACPIsdt *
dsdt_from_fadt(struct FADTbody *fadt)
{
struct ACPIsdt *sdt;
struct ACPIsdt *sdt;
/* Use the DSDT address if it is version 1, otherwise use X_DSDT. */
if (fadt_revision == 1)
if (acpi_get_fadt_revision(fadt) == 1)
sdt = (struct ACPIsdt *)acpi_map_sdt(fadt->dsdt_ptr);
else
sdt = (struct ACPIsdt *)acpi_map_sdt(fadt->x_dsdt_ptr);