openwrtv4/package/kernel/lantiq/ltq-vdsl/patches/110-semaphore-lock.patch

--- a/src/include/drv_dsl_cpe_pm_core.h
+++ b/src/include/drv_dsl_cpe_pm_core.h
@@ -1510,9 +1510,9 @@ typedef struct
    /** Common PM module mutex*/
    DSL_DRV_Mutex_t pmMutex;
    /** PM module direction Near-End mutex*/
-   DSL_DRV_Mutex_t pmNeMutex;
+   struct semaphore pmNeMutex;
    /** PM module direction Far-End mutex*/
-   DSL_DRV_Mutex_t pmFeMutex;
+   struct semaphore pmFeMutex;
    /** PM module Near-End access mutex*/
    DSL_DRV_Mutex_t pmNeAccessMutex;
    /** PM module Far-End access mutex*/
--- a/src/pm/drv_dsl_cpe_api_pm.c
+++ b/src/pm/drv_dsl_cpe_api_pm.c
@@ -220,9 +220,9 @@ DSL_Error_t DSL_DRV_PM_Start(
    /* init PM module common mutex */
    DSL_DRV_MUTEX_INIT(DSL_DRV_PM_CONTEXT(pContext)->pmMutex);
    /* init PM module direction Near-End mutex */
-   DSL_DRV_MUTEX_INIT(DSL_DRV_PM_CONTEXT(pContext)->pmNeMutex);
+   sema_init(&(DSL_DRV_PM_CONTEXT(pContext)->pmNeMutex),1);
    /* init PM module direction Far-End mutex */
-   DSL_DRV_MUTEX_INIT(DSL_DRV_PM_CONTEXT(pContext)->pmFeMutex);
+   sema_init(&(DSL_DRV_PM_CONTEXT(pContext)->pmFeMutex),1);
    /* init PM module Near-End access mutex */
    DSL_DRV_MUTEX_INIT(DSL_DRV_PM_CONTEXT(pContext)->pmNeAccessMutex);
    /* init PM module Far-End access mutex */
@@ -592,7 +592,7 @@ DSL_Error_t DSL_DRV_PM_Stop(
    if( DSL_DRV_PM_CONTEXT(pContext)->pmThreadFe.bRun != DSL_TRUE )
    {
       DSL_DEBUG(DSL_DBG_WRN,
-         (pContext, SYS_DBG_WRN"DSL[%02d]: PM module Near-End thread already stopped"
+         (pContext, SYS_DBG_WRN"DSL[%02d]: PM module Far-End thread already stopped"
          DSL_DRV_CRLF, DSL_DEV_NUM(pContext)));
    }
    else
--- a/src/pm/drv_dsl_cpe_pm_core.c
+++ b/src/pm/drv_dsl_cpe_pm_core.c
@@ -1022,7 +1022,7 @@ DSL_Error_t DSL_DRV_PM_DirectionMutexCon
    {
       if( bLock )
       {
-         if( DSL_DRV_MUTEX_LOCK(DSL_DRV_PM_CONTEXT(pContext)->pmNeMutex) )
+         if(down_interruptible(&(DSL_DRV_PM_CONTEXT(pContext)->pmNeMutex)))
          {
             DSL_DEBUG( DSL_DBG_ERR,
                (pContext, SYS_DBG_ERR"DSL[%02d]: ERROR - Couldn't lock PM NE mutex!"
@@ -1034,14 +1034,14 @@ DSL_Error_t DSL_DRV_PM_DirectionMutexCon
       else
       {
           /* Unlock PM module NE Mutex*/
-          DSL_DRV_MUTEX_UNLOCK(DSL_DRV_PM_CONTEXT(pContext)->pmNeMutex);
+          up(&(DSL_DRV_PM_CONTEXT(pContext)->pmNeMutex));
       }
    }
    else
    {
       if( bLock )
       {
-         if( DSL_DRV_MUTEX_LOCK(DSL_DRV_PM_CONTEXT(pContext)->pmFeMutex) )
+         if(down_interruptible(&(DSL_DRV_PM_CONTEXT(pContext)->pmFeMutex)))
          {
             DSL_DEBUG( DSL_DBG_ERR,
                (pContext, SYS_DBG_ERR"DSL[%02d]: ERROR - Couldn't lock PM FE mutex!"
@@ -1053,7 +1053,7 @@ DSL_Error_t DSL_DRV_PM_DirectionMutexCon
       else
       {
          /* Unlock PM module FE Mutex*/
-         DSL_DRV_MUTEX_UNLOCK(DSL_DRV_PM_CONTEXT(pContext)->pmFeMutex);
+         up(&(DSL_DRV_PM_CONTEXT(pContext)->pmFeMutex));
       }
    }
 
@@ -1139,7 +1139,7 @@ DSL_Error_t DSL_DRV_PM_Lock(DSL_Context_
    if( !(DSL_DRV_PM_CONTEXT(pContext)->bPmLock) )
    {
       /* Lock PM module Near-End Mutex*/
-      if( DSL_DRV_MUTEX_LOCK(DSL_DRV_PM_CONTEXT(pContext)->pmNeMutex) )
+      if(down_interruptible(&(DSL_DRV_PM_CONTEXT(pContext)->pmNeMutex)))
       {
          DSL_DEBUG( DSL_DBG_ERR,
             (pContext, SYS_DBG_ERR"DSL[%02d]: ERROR - Couldn't lock PM NE mutex!"
@@ -1148,8 +1148,8 @@ DSL_Error_t DSL_DRV_PM_Lock(DSL_Context_
          return DSL_ERR_SEMAPHORE_GET;
       }
 
-      /* Lock PM module Near-End Mutex*/
-      if( DSL_DRV_MUTEX_LOCK(DSL_DRV_PM_CONTEXT(pContext)->pmFeMutex) )
+      /* Lock PM module Far-End Mutex*/
+      if( down_interruptible(&(DSL_DRV_PM_CONTEXT(pContext)->pmFeMutex)) )
       {
          DSL_DEBUG( DSL_DBG_ERR,
             (pContext, SYS_DBG_ERR"DSL[%02d]: ERROR - Couldn't lock PM FE mutex!"
@@ -1193,10 +1193,10 @@ DSL_Error_t DSL_DRV_PM_UnLock(DSL_Contex
    if( DSL_DRV_PM_CONTEXT(pContext)->bPmLock )
    {
       /* Unlock PM module NE Mutex*/
-      DSL_DRV_MUTEX_UNLOCK(DSL_DRV_PM_CONTEXT(pContext)->pmNeMutex);
+      up(&(DSL_DRV_PM_CONTEXT(pContext)->pmNeMutex));
 
       /* Unlock PM module FE Mutex*/
-      DSL_DRV_MUTEX_UNLOCK(DSL_DRV_PM_CONTEXT(pContext)->pmFeMutex);
+      up(&(DSL_DRV_PM_CONTEXT(pContext)->pmFeMutex));
 
       /* Clear bPmLock flag*/
       DSL_DRV_PM_CONTEXT(pContext)->bPmLock = DSL_FALSE;