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Get rid of the strict aliasing error by retrieving the ECDT via a table

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header pointer and then casting it to the ecdt pointer.  This fixes the
-O2 build.  I'm unsure what changed recently to reveal this error since
this code has been unchanged for months.
This commit is contained in:
Nate Lawson 2004-07-02 19:17:27 +00:00
parent bf0acc273a
commit 99eb9c8b3b
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=131474
1 changed files with 3 additions and 2 deletions
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5
sys/dev/acpica/acpi_ec.c
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@ -367,6 +367,7 @@ void
acpi_ec_ecdt_probe(device_t parent)
{
ACPI_TABLE_ECDT *ecdt;
ACPI_TABLE_HEADER *hdr;
ACPI_STATUS status;
device_t child;
ACPI_HANDLE h;
@ -375,8 +376,8 @@ acpi_ec_ecdt_probe(device_t parent)
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
/* Find and validate the ECDT. */
status = AcpiGetFirmwareTable("ECDT", 1, ACPI_LOGICAL_ADDRESSING,
(ACPI_TABLE_HEADER **)&ecdt);
status = AcpiGetFirmwareTable("ECDT", 1, ACPI_LOGICAL_ADDRESSING, &hdr);
ecdt = (ACPI_TABLE_ECDT *)hdr;
if (ACPI_FAILURE(status) ||
ecdt->control.RegisterBitWidth != 8 ||
ecdt->data.RegisterBitWidth != 8) {