From f51bad20bf06a7c31bb78fde2fd3e4a1a5622bc7 Mon Sep 17 00:00:00 2001
From: Rob Bradford <robert.bradford@intel.com>
Date: Wed, 3 Nov 2021 14:44:07 +0000
Subject: [PATCH] acpi_tables: aml: Avoid extra vector allocation in number
 types

Using extend_from_slice() on the number types removes an extra vector
allocation.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
---
 acpi_tables/src/aml.rs | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/acpi_tables/src/aml.rs b/acpi_tables/src/aml.rs
index d3592ba80..f4d0205fd 100644
--- a/acpi_tables/src/aml.rs
+++ b/acpi_tables/src/aml.rs
@@ -109,7 +109,7 @@ pub type Word = u16;
 impl Aml for Word {
     fn append_aml_bytes(&self, bytes: &mut Vec<u8>) {
         bytes.push(0x0b); /* WordPrefix */
-        bytes.append(&mut self.to_le_bytes().to_vec());
+        bytes.extend_from_slice(&self.to_le_bytes())
     }
 }
 
@@ -118,7 +118,7 @@ pub type DWord = u32;
 impl Aml for DWord {
     fn append_aml_bytes(&self, bytes: &mut Vec<u8>) {
         bytes.push(0x0c); /* DWordPrefix */
-        bytes.append(&mut self.to_le_bytes().to_vec());
+        bytes.extend_from_slice(&self.to_le_bytes())
     }
 }
 
@@ -127,7 +127,7 @@ pub type QWord = u64;
 impl Aml for QWord {
     fn append_aml_bytes(&self, bytes: &mut Vec<u8>) {
         bytes.push(0x0e); /* QWordPrefix */
-        bytes.append(&mut self.to_le_bytes().to_vec());
+        bytes.extend_from_slice(&self.to_le_bytes())
     }
 }