Commit dd598449 authored by Yufeng Wang's avatar Yufeng Wang Committed by Paul Walmsley
Browse files

riscv: acpi: update FADT revision check to 6.6 



ACPI 6.6 is required for RISC-V as it introduces RISC-V specific
tables such as RHCT (RISC-V Hart Capabilities Table) and
RIMT (RISC-V I/O Mapping Table).

Update the FADT revision check from 6.5 to 6.6 and remove
the TODO comment since ACPI 6.6 has been officially released.

Signed-off-by: default avatarYufeng Wang <wangyufeng@kylinos.cn>
Reviewed-by: default avatarSunil V L <sunilvl@oss.qualcomm.com>
Acked-by: default avatarHeinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: default avatarYao Zi <me@ziyao.cc>
Link: https://patch.msgid.link/20260305091433.83983-1-r4o5m6e8o@163.com


Signed-off-by: default avatarPaul Walmsley <pjw@kernel.org>
parent 5d5c5d0f

arch/riscv/kernel/acpi.c

+5 −5
Original line number Diff line number Diff line
@@ -85,12 +85,12 @@ static int __init acpi_fadt_sanity_check(void) 
	 * The revision in the table header is the FADT's Major revision. The

	 * FADT also has a minor revision, which is stored in the FADT itself.

	 *

	 * TODO: Currently, we check for 6.5 as the minimum version to check

	 * for HW_REDUCED flag. However, once RISC-V updates are released in

	 * the ACPI spec, we need to update this check for exact minor revision

	 * ACPI 6.6 is required for RISC-V as it introduces RISC-V specific

	 * tables such as RHCT (RISC-V Hart Capabilities Table) and RIMT

	 * (RISC-V I/O Mapping Table).

	 */

	if (table->revision < 6 || (table->revision == 6 && fadt->minor_revision < 5))

		pr_err(FW_BUG "Unsupported FADT revision %d.%d, should be 6.5+\n",

	if (table->revision < 6 || (table->revision == 6 && fadt->minor_revision < 6))

		pr_err(FW_BUG "Unsupported FADT revision %d.%d, should be 6.6+\n",

		       table->revision, fadt->minor_revision);



	if (!(fadt->flags & ACPI_FADT_HW_REDUCED)) {