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authorMartin Roth <martinroth@google.com>2015-12-10 08:04:44 -0700
committerMartin Roth <martinroth@google.com>2015-12-26 20:53:49 +0100
commitd890b45520a4b2af2ae2b15096b5897ed7464fcb (patch)
treebf142bbca711b64adda6c421828f8ce16728c041 /src/ec/quanta
parent80ef7b778e5e5ec8b2940c875df76bb705855ede (diff)
ACPI: Add hack to avoid IASL warning when reading back registers
Upcoming versions of IASL give a warning about unused methods. This adds an operation after the read to use the local variable and avoid the warning. The warning can be completely disabled on the command line, but as it can find real issues, my preference is to not do that. Fixes warnings: dsdt.aml 640: Store (CTMP, Local0) Warning 3144 - Method Local is set but never used ^ (Local0) Change-Id: If55bb8e03abb8861e1f2f08a8bcb1be8c9783afe Signed-off-by: Martin Roth <martinroth@google.com> Reviewed-on: https://review.coreboot.org/12704 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src/ec/quanta')
-rw-r--r--src/ec/quanta/ene_kb3940q/acpi/ec.asl3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/ec/quanta/ene_kb3940q/acpi/ec.asl b/src/ec/quanta/ene_kb3940q/acpi/ec.asl
index 8d3ff81992..251b4500ca 100644
--- a/src/ec/quanta/ene_kb3940q/acpi/ec.asl
+++ b/src/ec/quanta/ene_kb3940q/acpi/ec.asl
@@ -143,6 +143,9 @@ Device (EC0)
// Force a read of CPU temperature
Store (CTMP, Local0)
+ // Use Local0 to avoid iasl warning: Method Local is set but never used
+ And(Local0, Ones, Local0)
+
// Find and program number of P-States
Store (SizeOf (\_PR.CP00._PSS), MPST)
Store ("Programming number of P-states: ", Debug)