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Commit ff284f37 authored by Rafael J. Wysocki's avatar Rafael J. Wysocki
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Revert "ACPICA: Permanently set _REV to the value '2'." 



Revert commit b1ef2972 (ACPICA: Permanently set _REV to the value
'2'.) as it causes a sound regression to happen on Dell XPS 13 (2015).

Reported-by: default avatarDominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 030bbdbf

drivers/acpi/acpica/utglobal.c

+3 −10
Original line number Diff line number Diff line
@@ -102,19 +102,12 @@ const struct acpi_predefined_names acpi_gbl_pre_defined_names[] = { 
	{"_SB_", ACPI_TYPE_DEVICE, NULL},

	{"_SI_", ACPI_TYPE_LOCAL_SCOPE, NULL},

	{"_TZ_", ACPI_TYPE_DEVICE, NULL},

	/*

	 * March, 2015:

	 * The _REV object is in the process of being deprecated, because

	 * other ACPI implementations permanently return 2. Thus, it

	 * has little or no value. Return 2 for compatibility with

	 * other ACPI implementations.

	 */

	{"_REV", ACPI_TYPE_INTEGER, ACPI_CAST_PTR(char, 2)},

	{"_REV", ACPI_TYPE_INTEGER, (char *)ACPI_CA_SUPPORT_LEVEL},

	{"_OS_", ACPI_TYPE_STRING, ACPI_OS_NAME},

	{"_GL_", ACPI_TYPE_MUTEX, ACPI_CAST_PTR(char, 1)},

	{"_GL_", ACPI_TYPE_MUTEX, (char *)1},



#if !defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY)

	{"_OSI", ACPI_TYPE_METHOD, ACPI_CAST_PTR(char, 1)},

	{"_OSI", ACPI_TYPE_METHOD, (char *)1},

#endif



	/* Table terminator */