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authorLv Zheng <lv.zheng@intel.com>2015-07-01 14:44:17 +0800
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2015-07-01 23:17:54 +0200
commit8f6f03610483962a9ebfaf38592909a3f0bcfa53 (patch)
tree855adcc25eb0301e918db300152dd372ca00aec1 /drivers/acpi/acpica/nsaccess.c
parenta8bd0f07eb594df51845d33f272fb1952fec1a6f (diff)
downloadlinux-8f6f03610483962a9ebfaf38592909a3f0bcfa53.tar.gz
ACPICA: Namespace: Add support to allow overriding objects
ACPICA commit 6084e34e44565c6293f446c0202b5e59b055e351

This patch adds an "NamespaceOverride" flag in struct acpi_walk_state, and allows
namespace objects to be overridden when this flag is set. Lv Zheng.

Link: https://github.com/acpica/acpica/commit/6084e34e
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/acpica/nsaccess.c')
-rw-r--r--drivers/acpi/acpica/nsaccess.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/acpi/acpica/nsaccess.c b/drivers/acpi/acpica/nsaccess.c
index 24fa19a76d70..19ad0b5993d5 100644
--- a/drivers/acpi/acpica/nsaccess.c
+++ b/drivers/acpi/acpica/nsaccess.c
@@ -304,7 +304,9 @@ acpi_ns_lookup(union acpi_generic_state *scope_info,
 		return_ACPI_STATUS(AE_BAD_PARAMETER);
 	}
 
-	local_flags = flags & ~(ACPI_NS_ERROR_IF_FOUND | ACPI_NS_SEARCH_PARENT);
+	local_flags = flags &
+	    ~(ACPI_NS_ERROR_IF_FOUND | ACPI_NS_OVERRIDE_IF_FOUND |
+	      ACPI_NS_SEARCH_PARENT);
 	*return_node = ACPI_ENTRY_NOT_FOUND;
 	acpi_gbl_ns_lookup_count++;
 
@@ -547,6 +549,12 @@ acpi_ns_lookup(union acpi_generic_state *scope_info,
 			if (flags & ACPI_NS_ERROR_IF_FOUND) {
 				local_flags |= ACPI_NS_ERROR_IF_FOUND;
 			}
+
+			/* Set override flag according to caller */
+
+			if (flags & ACPI_NS_OVERRIDE_IF_FOUND) {
+				local_flags |= ACPI_NS_OVERRIDE_IF_FOUND;
+			}
 		}
 
 		/* Extract one ACPI name from the front of the pathname */