From: Daniel Scally <djrscally@gmail.com>
Date: Sat, 5 Dec 2020 17:04:03 +0000 (+0000)
Subject: Revert "ACPI / resources: Use AE_CTRL_TERMINATE to terminate resources walks"
X-Git-Tag: v4.14.213~57
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=ba8e08cb49d6872fa6a9a246c9ad96a4baa9e6c0;p=users%2Fdwmw2%2Flinux.git

Revert "ACPI / resources: Use AE_CTRL_TERMINATE to terminate resources walks"

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>
---

diff --git a/drivers/acpi/resource.c b/drivers/acpi/resource.c
index d85e010ee2cce..39ab333910dd4 100644
--- a/drivers/acpi/resource.c
+++ b/drivers/acpi/resource.c
@@ -548,7 +548,7 @@ static acpi_status acpi_dev_process_resource(struct acpi_resource *ares,
 		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;
 		}