X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=drivers%2Facpi%2Fnamespace%2Fnsxfname.c;h=408bd114572842bd19652ca8f6a84643236ced67;hb=f1c2b1daf040d2feebfbbd4a0cd80cde856fc031;hp=8cd8675a47c0403c765c640f7b021b43fa89327a;hpb=34218e06688341bd05a41425b745c7812d118de0;p=linux-2.6-omap-h63xx.git

diff --git a/drivers/acpi/namespace/nsxfname.c b/drivers/acpi/namespace/nsxfname.c
index 8cd8675a47c..408bd114572 100644
--- a/drivers/acpi/namespace/nsxfname.c
+++ b/drivers/acpi/namespace/nsxfname.c
@@ -42,8 +42,6 @@
  * POSSIBILITY OF SUCH DAMAGES.
  */
 
-#include <linux/module.h>
-
 #include <acpi/acpi.h>
 #include <acpi/acnamesp.h>
 
@@ -86,39 +84,41 @@ acpi_get_handle(acpi_handle parent,
 	/* Convert a parent handle to a prefix node */
 
 	if (parent) {
-		status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
-		if (ACPI_FAILURE(status)) {
-			return (status);
-		}
-
 		prefix_node = acpi_ns_map_handle_to_node(parent);
 		if (!prefix_node) {
-			(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
 			return (AE_BAD_PARAMETER);
 		}
+	}
+
+	/*
+	 * Valid cases are:
+	 * 1) Fully qualified pathname
+	 * 2) Parent + Relative pathname
+	 *
+	 * Error for <null Parent + relative path>
+	 */
+	if (acpi_ns_valid_root_prefix(pathname[0])) {
+
+		/* Pathname is fully qualified (starts with '\') */
+
+		/* Special case for root-only, since we can't search for it */
 
-		status = acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
-		if (ACPI_FAILURE(status)) {
-			return (status);
+		if (!ACPI_STRCMP(pathname, ACPI_NS_ROOT_PATH)) {
+			*ret_handle =
+			    acpi_ns_convert_entry_to_handle(acpi_gbl_root_node);
+			return (AE_OK);
 		}
-	}
+	} else if (!prefix_node) {
 
-	/* Special case for root, since we can't search for it */
+		/* Relative path with null prefix is disallowed */
 
-	if (ACPI_STRCMP(pathname, ACPI_NS_ROOT_PATH) == 0) {
-		*ret_handle =
-		    acpi_ns_convert_entry_to_handle(acpi_gbl_root_node);
-		return (AE_OK);
+		return (AE_BAD_PARAMETER);
 	}
 
-	/*
-	 *  Find the Node and convert to a handle
-	 */
-	status =
-	    acpi_ns_get_node_by_path(pathname, prefix_node, ACPI_NS_NO_UPSEARCH,
-				     &node);
+	/* Find the Node and convert to a handle */
 
-	*ret_handle = NULL;
+	status =
+	    acpi_ns_get_node(prefix_node, pathname, ACPI_NS_NO_UPSEARCH, &node);
 	if (ACPI_SUCCESS(status)) {
 		*ret_handle = acpi_ns_convert_entry_to_handle(node);
 	}
@@ -126,7 +126,7 @@ acpi_get_handle(acpi_handle parent,
 	return (status);
 }
 
-EXPORT_SYMBOL(acpi_get_handle);
+ACPI_EXPORT_SYMBOL(acpi_get_handle)
 
 /******************************************************************************
  *
@@ -143,7 +143,6 @@ EXPORT_SYMBOL(acpi_get_handle);
  *              complementary functions.
  *
  ******************************************************************************/
-
 acpi_status
 acpi_get_name(acpi_handle handle, u32 name_type, struct acpi_buffer * buffer)
 {
@@ -162,6 +161,7 @@ acpi_get_name(acpi_handle handle, u32 name_type, struct acpi_buffer * buffer)
 	}
 
 	if (name_type == ACPI_FULL_PATHNAME) {
+
 		/* Get the full pathname (From the namespace root) */
 
 		status = acpi_ns_handle_to_pathname(handle, buffer);
@@ -203,7 +203,7 @@ acpi_get_name(acpi_handle handle, u32 name_type, struct acpi_buffer * buffer)
 	return (status);
 }
 
-EXPORT_SYMBOL(acpi_get_name);
+ACPI_EXPORT_SYMBOL(acpi_get_name)
 
 /******************************************************************************
  *
@@ -219,7 +219,6 @@ EXPORT_SYMBOL(acpi_get_name);
  *              control methods (Such as in the case of a device.)
  *
  ******************************************************************************/
-
 acpi_status
 acpi_get_object_info(acpi_handle handle, struct acpi_buffer * buffer)
 {
@@ -241,7 +240,7 @@ acpi_get_object_info(acpi_handle handle, struct acpi_buffer * buffer)
 		return (status);
 	}
 
-	info = ACPI_MEM_CALLOCATE(sizeof(struct acpi_device_info));
+	info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_device_info));
 	if (!info) {
 		return (AE_NO_MEMORY);
 	}
@@ -345,11 +344,11 @@ acpi_get_object_info(acpi_handle handle, struct acpi_buffer * buffer)
 	}
 
       cleanup:
-	ACPI_MEM_FREE(info);
+	ACPI_FREE(info);
 	if (cid_list) {
-		ACPI_MEM_FREE(cid_list);
+		ACPI_FREE(cid_list);
 	}
 	return (status);
 }
 
-EXPORT_SYMBOL(acpi_get_object_info);
+ACPI_EXPORT_SYMBOL(acpi_get_object_info)