3 Commits

Author	SHA1	Message	Date
Len Brown	d17cb18a07	Revert "ACPI: Ingore the RESET_REG_SUP bit when using ACPI reset mechanism" ... This reverts commit 8fd145917f. http://bugzilla.kernel.org/show_bug.cgi?id=11942 Signed-off-by: Len Brown <len.brown@intel.com>	2008-11-06 20:51:59 -05:00
Zhao Yakui	8fd145917f	ACPI: Ingore the RESET_REG_SUP bit when using ACPI reset mechanism ... According to ACPI 3.0, FADT.flags.RESET_REG_SUP indicates whether the ACPI reboot mechanism is supported. However, some boxes have this bit clear, have a valid ACPI_RESET_REG & RESET_VALUE, and ACPI reboot is the only mechanism that works for them after S3. This suggests that other operating systems may not be checking the RESET_REG_SUP bit, and are using other means to decide whether to use the ACPI reboot mechanism or not. Here we stop checking RESET_REG_SUP. Instead, When acpi reboot is requested, only the reset_register is checked. If the following conditions are met, it indicates that the reset register is supported. a. reset_register is not zero b. the access width is eight c. the bit_offset is zero http://bugzilla.kernel.org/show_bug.cgi?id=7299 http://bugzilla.kernel.org/show_bug.cgi?id=1148 Signed-off-by: Zhao Yakui <yakui.zhao@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>	2008-10-18 01:01:12 -04:00
Aaron Durbin	4d3870431d	Add the ability to reset the machine using the RESET_REG in ACPI's FADT table. ... Signed-off-by: Aaron Durbin <adurbin@google.com> Signed-off-by: Andi Kleen <ak@linux.intel.com> Cc: Len Brown <lenb@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>	2008-07-16 23:27:08 +02:00