diff mbox series

[5.10,533/717] Revert "ACPI / resources: Use AE_CTRL_TERMINATE to terminate resources walks"

Message ID 20201228125046.506749180@linuxfoundation.org
State Superseded
Headers show
Series None | expand

Commit Message

Greg Kroah-Hartman Dec. 28, 2020, 12:48 p.m. UTC 
From: Daniel Scally <djrscally@gmail.com>

commit 12fc4dad94dfac25599f31257aac181c691ca96f upstream.

This reverts commit 8a66790b7850a6669129af078768a1d42076a0ef.

Switching this function to AE_CTRL_TERMINATE broke the documented
behaviour of acpi_dev_get_resources() - AE_CTRL_TERMINATE does not, in
fact, terminate the resource walk because acpi_walk_resource_buffer()
ignores it (specifically converting it to AE_OK), referring to that
value as "an OK termination by the user function". This means that
acpi_dev_get_resources() does not abort processing when the preproc
function returns a negative value.

Signed-off-by: Daniel Scally <djrscally@gmail.com>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/acpi/resource.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

--- a/drivers/acpi/resource.c
+++ b/drivers/acpi/resource.c
@@ -541,7 +541,7 @@  static acpi_status acpi_dev_process_reso
 		ret = c->preproc(ares, c->preproc_data);
 		if (ret < 0) {
 			c->error = ret;
-			return AE_CTRL_TERMINATE;
+			return AE_ABORT_METHOD;
 		} else if (ret > 0) {
 			return AE_OK;
 		}