[edk2-devel] [PATCH edk2-platforms v2 2/2] SbsaQemu: remove some methods from DSDT

["Marcin Juszkiewicz" <marcin.juszkiewicz@linaro.org>]

IASL complained that DSDT is not optimal:

Dsdt.iiii
83:             Name (RBUF, ResourceTemplate() {
Remark   2173 - Creation of named objects within a method is highly
inefficient, use globals or method local variables instead ^
(\_SB.USB0._CRS)

Dsdt.iiii
377:       Name (RBUF, ResourceTemplate () {
Remark   2173 - Creation of named objects within a method is highly
inefficient, use globals or method local variables instead ^
(\_SB.PCI0._CRS)

Simplified some _CRS nodes.

Signed-off-by: Marcin Juszkiewicz <marcin.juszkiewicz@linaro.org>
---
 Silicon/Qemu/SbsaQemu/AcpiTables/Dsdt.asl | 23 ++++++++---------------
 1 file changed, 8 insertions(+), 15 deletions(-)

diff --git a/Silicon/Qemu/SbsaQemu/AcpiTables/Dsdt.asl b/Silicon/Qemu/SbsaQemu/AcpiTables/Dsdt.asl
index b55ad6c5cc07..c134fb66e860 100644
--- a/Silicon/Qemu/SbsaQemu/AcpiTables/Dsdt.asl
+++ b/Silicon/Qemu/SbsaQemu/AcpiTables/Dsdt.asl
@@ -77,15 +77,12 @@ DefinitionBlock ("DsdtTable.aml", "DSDT",
         Method (_STA) {
           Return (XHCI)
         }
-        Method (_CRS, 0x0, Serialized) {
-            Name (RBUF, ResourceTemplate() {
-                Memory32Fixed (ReadWrite,
-                               FixedPcdGet32 (PcdPlatformXhciBase),
-                               FixedPcdGet32 (PcdPlatformXhciSize))
-                Interrupt (ResourceConsumer, Level, ActiveHigh, Exclusive) { 43 }
-            })
-            Return (RBUF)
-        }
+        Name (_CRS, ResourceTemplate() {
+            Memory32Fixed (ReadWrite,
+                           FixedPcdGet32 (PcdPlatformXhciBase),
+                           FixedPcdGet32 (PcdPlatformXhciSize))
+            Interrupt (ResourceConsumer, Level, ActiveHigh, Exclusive) { 43 }
+        })
 
         // Root Hub
         Device (RHUB) {
@@ -371,8 +368,7 @@ DefinitionBlock ("DsdtTable.aml", "DSDT",
       })
 
       // Root complex resources
-      Method (_CRS, 0, Serialized) {
-      Name (RBUF, ResourceTemplate () {
+      Name (_CRS, ResourceTemplate () {
         WordBusNumber ( // Bus numbers assigned to this root
         ResourceProducer,
         MinFixed, MaxFixed, PosDecode,
@@ -418,10 +414,7 @@ DefinitionBlock ("DsdtTable.aml", "DSDT",
           FixedPcdGet32 (PcdPciIoSize),            // Length
           ,,,TypeTranslation
           )
-        }) // Name(RBUF)
-
-        Return (RBUF)
-      } // Method(_CRS)
+      }) // Name(_CRS)
 
       Device (RES0)
       {
-- 
2.44.0



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