From bbafb8f2fe5a2676eed19e7399d0c1cb8b327b72 Mon Sep 17 00:00:00 2001
From: Gregory Nutt <gnutt@nuttx.org>
Date: Sun, 18 Jan 2015 16:58:11 -0600
Subject: [PATCH] Tiva Ethernet:  When calling into the stack from the worker
 thread, it is necessary to have the stack locked

---
 arch/arm/src/tiva/tm4c_ethernet.c | 12 ++++++++++++
 drivers/net/skeleton.c            | 12 ++++++++++++
 2 files changed, 24 insertions(+)

diff --git a/arch/arm/src/tiva/tm4c_ethernet.c b/arch/arm/src/tiva/tm4c_ethernet.c
index 3ac63ba685..597a08961d 100644
--- a/arch/arm/src/tiva/tm4c_ethernet.c
+++ b/arch/arm/src/tiva/tm4c_ethernet.c
@@ -2050,12 +2050,15 @@ static inline void tiva_interrupt_process(FAR struct tiva_ethmac_s *priv)
 static void tiva_interrupt_work(FAR void *arg)
 {
   FAR struct tiva_ethmac_s *priv = (FAR struct tiva_ethmac_s *)arg;
+  net_lock_t state;
 
   DEBUGASSERT(priv);
 
   /* Process pending Ethernet interrupts */
 
+  state = net_lock();
   tiva_interrupt_process(priv);
+  net_unlock(state);
 
   /* Re-enable Ethernet interrupts at the NVIC */
 
@@ -2198,10 +2201,13 @@ static inline void tiva_txtimeout_process(FAR struct tiva_ethmac_s *priv)
 static void tiva_txtimeout_work(FAR void *arg)
 {
   FAR struct tiva_ethmac_s *priv = (FAR struct tiva_ethmac_s *)arg;
+  net_lock_t state;
 
   /* Process pending Ethernet interrupts */
 
+  state = net_lock();
   tiva_txtimeout_process(priv);
+  net_unlock(state);
 }
 #endif
 
@@ -2347,10 +2353,13 @@ static inline void tiva_poll_process(FAR struct tiva_ethmac_s *priv)
 static void tiva_poll_work(FAR void *arg)
 {
   FAR struct tiva_ethmac_s *priv = (FAR struct tiva_ethmac_s *)arg;
+  net_lock_t state;
 
   /* Perform the poll */
 
+  state = net_lock();
   tiva_poll_process(priv);
+  net_unlock(state);
 }
 #endif
 
@@ -2553,10 +2562,13 @@ static inline void tiva_txavail_process(FAR struct tiva_ethmac_s *priv)
 static void tiva_txavail_work(FAR void *arg)
 {
   FAR struct tiva_ethmac_s *priv = (FAR struct tiva_ethmac_s *)arg;
+  net_lock_t state;
 
   /* Perform the poll */
 
+  state = net_lock();
   tiva_txavail_process(priv);
+  net_unlock(state);
 }
 #endif
 
diff --git a/drivers/net/skeleton.c b/drivers/net/skeleton.c
index 86f1f83a11..61ac806d84 100644
--- a/drivers/net/skeleton.c
+++ b/drivers/net/skeleton.c
@@ -463,10 +463,13 @@ static inline void skel_interrupt_process(FAR struct skel_driver_s *skel)
 static void skel_interrupt_work(FAR void *arg)
 {
   FAR struct skel_driver_s *skel = (FAR struct skel_driver_s *)arg;
+  net_lock_t state;
 
   /* Process pending Ethernet interrupts */
 
+  state = net_lock();
   skel_interrupt_process(skel);
+  net_unlock(state);
 
   /* Re-enable Ethernet interrupts */
 
@@ -583,10 +586,13 @@ static inline void skel_txtimeout_process(FAR struct skel_driver_s *skel)
 static void skel_txtimeout_work(FAR void *arg)
 {
   FAR struct skel_driver_s *skel = (FAR struct skel_driver_s *)arg;
+  net_lock_t state;
 
   /* Process pending Ethernet interrupts */
 
+  state = net_lock();
   skel_txtimeout_process(skel);
+  net_unlock(state);
 }
 #endif
 
@@ -693,10 +699,13 @@ static inline void skel_poll_process(FAR struct skel_driver_s *skel)
 static void skel_poll_work(FAR void *arg)
 {
   FAR struct skel_driver_s *skel = (FAR struct skel_driver_s *)arg;
+  net_lock_t state;
 
   /* Perform the poll */
 
+  state = net_lock();
   skel_poll_process(skel);
+  net_unlock(state);
 }
 #endif
 
@@ -884,10 +893,13 @@ static int inline skel_txavail_process(FAR struct skel_driver_s *skel)
 static void skel_txavail_work(FAR void *arg)
 {
   FAR struct skel_driver_s *skel = (FAR struct skel_driver_s *)arg;
+  net_lock_t state;
 
   /* Perform the poll */
 
+  state = net_lock();
   skel_txavail_process(skel);
+  net_unlock(state);
 }
 #endif