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- Prefer ACPI_COMPARE_NAME(a, b) macro over strncmp(a, b, ACPI_NAME_SIZE).

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- Make sure the predefined name is a string type.
- Return slightly more useful errors.
This commit is contained in:
Jung-uk Kim 2013-05-20 22:18:18 +00:00
parent ec23b5bfe7
commit b3f35be0c6
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=250834
1 changed files with 8 additions and 9 deletions
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17
sys/dev/acpica/Osd/OsdTable.c
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@ -54,8 +54,8 @@ AcpiOsPredefinedOverride(const ACPI_PREDEFINED_NAMES *InitVal,
return (AE_BAD_PARAMETER);
*NewVal = NULL;
if (strncmp(InitVal->Name, "_OS_", ACPI_NAME_SIZE) == 0 &&
strlen(acpi_osname) > 0) {
if (ACPI_COMPARE_NAME(InitVal->Name, "_OS_") &&
InitVal->Type == ACPI_TYPE_STRING && strlen(acpi_osname) > 0) {
printf("ACPI: Overriding _OS definition with \"%s\"\n",
acpi_osname);
*NewVal = acpi_osname;
@ -80,18 +80,17 @@ AcpiOsTableOverride(ACPI_TABLE_HEADER *ExistingTable,
for (int i = 0; i < ACPI_NAME_SIZE; i++)
modname[i + 5] = tolower(ExistingTable->Signature[i]);
#else
/* If we're not overriding the DSDT, just return. */
if (strncmp(ExistingTable->Signature, ACPI_SIG_DSDT,
ACPI_NAME_SIZE) != 0)
return (AE_OK);
if (!ACPI_COMPARE_NAME(ExistingTable->Signature, ACPI_SIG_DSDT))
return (AE_SUPPORT);
#endif
acpi_table = preload_search_by_type(modname);
if (acpi_table == NULL)
return (AE_OK);
return (AE_NOT_FOUND);
hdr = preload_fetch_addr(acpi_table);
sz = preload_fetch_size(acpi_table);
if (hdr != NULL && sz != 0)
*NewTable = hdr;
if (hdr == NULL || sz == 0)
return (AE_ERROR);
*NewTable = hdr;
return (AE_OK);
}