[UBUNTU PATCH: acpi] Do not abort method execution if asked to release not acquired mutex

[Randy Dunlap <randy.dunlap@oracle.com>]

From: Chuck Short <chuck@maggie>

[UBUNTU: acpi] Do not abort method execution if asked to release not acquired mutex.

See http://bugme.osdl.org/show_bug.cgi?id=6687
Closes: #50088

patch location:
http://www.kernel.org/git/?p=linux/kernel/git/bcollins/ubuntu-dapper.git;a=commitdiff;h=202ddb5b6498af53e110f78edd41a217587c1ffb

Signed-off-by: Chuck Short <zulcss@gmail.com>
Signed-off-by: Ben Collins <bcollins@ubuntu.com>
---
 drivers/acpi/executer/exmutex.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- linux-2617-g21.orig/drivers/acpi/executer/exmutex.c
+++ linux-2617-g21/drivers/acpi/executer/exmutex.c
@@ -246,7 +246,7 @@ acpi_ex_release_mutex(union acpi_operand
 		ACPI_ERROR((AE_INFO,
 			    "Cannot release Mutex [%4.4s], not acquired",
 			    acpi_ut_get_node_name(obj_desc->mutex.node)));
-		return_ACPI_STATUS(AE_AML_MUTEX_NOT_ACQUIRED);
+		return_ACPI_STATUS(AE_OK);
 	}
 
 	/* Sanity check -- we must have a valid thread ID */



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