disable FB

hc

2024-01-04 1543e317f1da31b75942316931e8f491a8920811

 kernel/drivers/acpi/acpica/hwvalid.c
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@@ -23,8 +23,8 @@
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  *
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  * The table is used to implement the Microsoft port access rules that
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  * first appeared in Windows XP. Some ports are always illegal, and some
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- * ports are only illegal if the BIOS calls _OSI with a win_XP string or
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- * later (meaning that the BIOS itelf is post-XP.)
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+ * ports are only illegal if the BIOS calls _OSI with nothing newer than
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+ * the specific _OSI strings.
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  *
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  * This provides ACPICA with the desired port protections and
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  * Microsoft compatibility.
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@@ -145,7 +145,8 @@
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 			/* Port illegality may depend on the _OSI calls made by the BIOS */
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-			if (acpi_gbl_osi_data >= port_info->osi_dependency) {
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+			if (port_info->osi_dependency == ACPI_ALWAYS_ILLEGAL ||
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+			    acpi_gbl_osi_data == port_info->osi_dependency) {
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 				ACPI_DEBUG_PRINT((ACPI_DB_VALUES,
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 						  "Denied AML access to port 0x%8.8X%8.8X/%X (%s 0x%.4X-0x%.4X)\n",
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 						  ACPI_FORMAT_UINT64(address),