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authorBob Moore <robert.moore@intel.com>2008-11-12 15:15:29 +0800
committerLen Brown <len.brown@intel.com>2008-12-29 22:38:36 -0500
commitfc37445733aeae4fd1a20385850620354263b1d5 (patch)
treea989d6bf8dcc2011f25e365532c3855a48f11c62 /include/acpi/aclocal.h
parent96411a630412f057d365aa1e9de7d23c069d627a (diff)
downloadop-kernel-dev-fc37445733aeae4fd1a20385850620354263b1d5.zip
op-kernel-dev-fc37445733aeae4fd1a20385850620354263b1d5.tar.gz
ACPICA: Add a mechanism to escape infinite AML While() loops
Add a loop counter to force exit from AML While loops if the count becomes too large. This can occur in poorly written AML when the hardware does not respond within a while loop and the loop does not implement a timeout. The maximum loop count is configurable. A new exception code is returned when a loop is broken, AE_AML_INFINITE_LOOP. Bob Moore, Alexey Starikovskiy. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'include/acpi/aclocal.h')
-rw-r--r--include/acpi/aclocal.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/acpi/aclocal.h b/include/acpi/aclocal.h
index ecab527..0323fa9 100644
--- a/include/acpi/aclocal.h
+++ b/include/acpi/aclocal.h
@@ -566,6 +566,7 @@ struct acpi_control_state {
union acpi_parse_object *predicate_op;
u8 *aml_predicate_start; /* Start of if/while predicate */
u8 *package_end; /* End of if/while block */
+ u32 loop_count; /* While() loop counter */
};
/*
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