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authorMartin Schiller <ms@dev.tdt.de>2017-09-26 07:56:55 +0200
committerMathias Kresin <dev@kresin.me>2017-09-28 07:23:18 +0200
commitf1ae982f8dca73ec613ab4b6edf59037fc05e317 (patch)
tree6b5461b885af48bc7f9ae6eda2a109623d1d0d4b /package/kernel/lantiq/ltq-vdsl/patches
parenta9a37526a9df3b565f5242857d17887cb492afab (diff)
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ltq-vdsl: fix PM thread suspend and resume handling
This is a backport form drv_dsl_cpe_api-4.18.10 and fixes some PM thread handling issues which lead to high system load and watchdog trigger within 1h of uptime for boards not connected to a xdsl line. Signed-off-by: Martin Schiller <ms@dev.tdt.de>
Diffstat (limited to 'package/kernel/lantiq/ltq-vdsl/patches')
-rw-r--r--package/kernel/lantiq/ltq-vdsl/patches/110-semaphore-lock.patch107
1 files changed, 107 insertions, 0 deletions
diff --git a/package/kernel/lantiq/ltq-vdsl/patches/110-semaphore-lock.patch b/package/kernel/lantiq/ltq-vdsl/patches/110-semaphore-lock.patch
new file mode 100644
index 0000000000..12c00c33ec
--- /dev/null
+++ b/package/kernel/lantiq/ltq-vdsl/patches/110-semaphore-lock.patch
@@ -0,0 +1,107 @@
+--- 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;