From bf6e854a85bfde07028af4ed68e2679ed6905fca Mon Sep 17 00:00:00 2001
From: Joseph Newman <joseph@josephn.net>
Date: Tue, 13 Nov 2018 02:23:20 +0000
Subject: [PATCH] [efr32] add missing volatile qualifiers (#3292)

---
 examples/platforms/efr32/radio.c | 16 ++++++++--------
 examples/platforms/efr32/uart.c  |  6 +++---
 2 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/examples/platforms/efr32/radio.c b/examples/platforms/efr32/radio.c
index 5eb2839a0..634325818 100644
--- a/examples/platforms/efr32/radio.c
+++ b/examples/platforms/efr32/radio.c
@@ -67,19 +67,19 @@ enum
     EFR32_RECEIVE_SENSITIVITY = -100, // dBm
 };
 
-static uint16_t     sPanId             = 0;
-static bool         sTransmitBusy      = false;
-static bool         sPromiscuous       = false;
-static bool         sIsSrcMatchEnabled = false;
-static otRadioState sState             = OT_RADIO_STATE_DISABLED;
+static uint16_t      sPanId             = 0;
+static volatile bool sTransmitBusy      = false;
+static bool          sPromiscuous       = false;
+static bool          sIsSrcMatchEnabled = false;
+static otRadioState  sState             = OT_RADIO_STATE_DISABLED;
 
 static uint8_t      sReceivePsdu[IEEE802154_MAX_LENGTH];
 static otRadioFrame sReceiveFrame;
 static otError      sReceiveError;
 
-static otRadioFrame sTransmitFrame;
-static uint8_t      sTransmitPsdu[IEEE802154_MAX_LENGTH];
-static otError      sTransmitError;
+static otRadioFrame     sTransmitFrame;
+static uint8_t          sTransmitPsdu[IEEE802154_MAX_LENGTH];
+static volatile otError sTransmitError;
 
 typedef struct srcMatchEntry
 {
diff --git a/examples/platforms/efr32/uart.c b/examples/platforms/efr32/uart.c
index 32f0741c4..ec610157f 100644
--- a/examples/platforms/efr32/uart.c
+++ b/examples/platforms/efr32/uart.c
@@ -76,16 +76,16 @@ static UARTDRV_HandleData_t sUartHandleData;
 static UARTDRV_Handle_t     sUartHandle = &sUartHandleData;
 static uint8_t              sReceiveBuffer[2];
 static const uint8_t *      sTransmitBuffer = NULL;
-static uint16_t             sTransmitLength = 0;
+static volatile uint16_t    sTransmitLength = 0;
 
 typedef struct ReceiveFifo_t
 {
     // The data buffer
     uint8_t mBuffer[kReceiveFifoSize];
     // The offset of the first item written to the list.
-    uint16_t mHead;
+    volatile uint16_t mHead;
     // The offset of the next item to be written to the list.
-    uint16_t mTail;
+    volatile uint16_t mTail;
 } ReceiveFifo_t;
 
 static ReceiveFifo_t sReceiveFifo;