From 87f36450f5c0947c397a6e318f37e4251399fd6d Mon Sep 17 00:00:00 2001
From: Vincent Coubard <vincent.coubard@arm.com>
Date: Tue, 20 Nov 2018 18:58:52 +0000
Subject: [PATCH] BLE: return immutable buffer from
 AdvertisingDataBuilder::getAdvertisingData

---
 features/FEATURE_BLE/ble/gap/AdvertisingDataBuilder.h      | 2 +-
 features/FEATURE_BLE/source/gap/AdvertisingDataBuilder.cpp | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/features/FEATURE_BLE/ble/gap/AdvertisingDataBuilder.h b/features/FEATURE_BLE/ble/gap/AdvertisingDataBuilder.h
index 42e63fa466..80901cdecb 100644
--- a/features/FEATURE_BLE/ble/gap/AdvertisingDataBuilder.h
+++ b/features/FEATURE_BLE/ble/gap/AdvertisingDataBuilder.h
@@ -547,7 +547,7 @@ public:
      *
      * @return A Span containing the payload.
      */
-    mbed::Span<uint8_t> getAdvertisingData() const;
+    mbed::Span<const uint8_t> getAdvertisingData() const;
 
     /**
      * Add a new field into the payload. Will return an error if type is already present.
diff --git a/features/FEATURE_BLE/source/gap/AdvertisingDataBuilder.cpp b/features/FEATURE_BLE/source/gap/AdvertisingDataBuilder.cpp
index eb64f2f449..4b8e86e1b4 100644
--- a/features/FEATURE_BLE/source/gap/AdvertisingDataBuilder.cpp
+++ b/features/FEATURE_BLE/source/gap/AdvertisingDataBuilder.cpp
@@ -28,7 +28,7 @@ AdvertisingDataBuilder::AdvertisingDataBuilder(uint8_t* buffer, size_t buffer_si
     _payload_length(0) {
 }
 
-mbed::Span<uint8_t> AdvertisingDataBuilder::getAdvertisingData() const {
+mbed::Span<const uint8_t> AdvertisingDataBuilder::getAdvertisingData() const {
     return _buffer.first(_payload_length);
 }