ACPICA: Update resource descriptor handling (852d4f9c) · Commits · 戴 / test

ACPICA commit c8eac10178b387f9eb1935694e509d4518da77bb This change restores the change introduced by commit 23b5bbe and adds a comment concerning resource descriptor buffers that extend beyond the END_TAG descriptor. Link: https://github.com/acpica/acpica/commit/c8eac101 Signed-off-by:

Bob Moore <robert.moore@intel.com> Signed-off-by:

Lv Zheng <lv.zheng@intel.com> Signed-off-by:

Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/acpi/acpica/utresrc.c

+9 −5

Original line number	Diff line number	Diff line
		@@ -184,9 +184,11 @@ acpi_ut_walk_aml_resources(struct acpi_walk_state *walk_state,

		ACPI_FUNCTION_TRACE(ut_walk_aml_resources);

		/* The absolute minimum resource template is one end_tag descriptor */

		if (aml_length < sizeof(struct aml_resource_end_tag)) {
		/*
		* The absolute minimum resource template is one end_tag descriptor.
		* However, we will treat a lone end_tag as just a simple buffer.
		*/
		if (aml_length <= sizeof(struct aml_resource_end_tag)) {
		return_ACPI_STATUS(AE_AML_NO_RESOURCE_END_TAG);
		}

		@@ -243,8 +245,10 @@ acpi_ut_walk_aml_resources(struct acpi_walk_state *walk_state,
		*context = aml;
		}

		/* Normal exit */

		/*
		* Normal exit. Note: We allow the buffer to be larger than
		* the resource template, as long as the END_TAG exists.
		*/
		return_ACPI_STATUS(AE_OK);
		}

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