[HAL][LPTIM] Remove __HAL_LOCK() and __HAL_UNLOCK() invocation from both HAL_xxx_RegisterCallback() and HAL_xxx_UnRegisterCallback() Rationale: HAL_xxx_RegisterCallback() must be called before HAL_xxx_Init(), which creates the semaphore used when invoking __HAL_LOCK() and __HAL_UNLOCK(). Invoking __HAL_LOCK() and __HAL_UNLOCK() in HAL_xxx_RegisterCallback() means using the semaphore before its creation.

diff --git a/Src/stm32f7xx_hal_lptim.c b/Src/stm32f7xx_hal_lptim.c
index 44f1f98..1eb81da 100644
--- a/Src/stm32f7xx_hal_lptim.c
+++ b/Src/stm32f7xx_hal_lptim.c

@@ -2067,9 +2067,6 @@
     return HAL_ERROR;
   }
 
-  /* Process locked */
-  __HAL_LOCK(hlptim);
-
   if (hlptim->State == HAL_LPTIM_STATE_READY)
   {
     switch (CallbackID)
@@ -2140,9 +2137,6 @@
     status =  HAL_ERROR;
   }
 
-  /* Release Lock */
-  __HAL_UNLOCK(hlptim);
-
   return status;
 }
 
@@ -2168,9 +2162,6 @@
 {
   HAL_StatusTypeDef status = HAL_OK;
 
-  /* Process locked */
-  __HAL_LOCK(hlptim);
-
   if (hlptim->State == HAL_LPTIM_STATE_READY)
   {
     switch (CallbackID)
@@ -2252,9 +2243,6 @@
     status =  HAL_ERROR;
   }
 
-  /* Release Lock */
-  __HAL_UNLOCK(hlptim);
-
   return status;
 }
 #endif /* USE_HAL_LPTIM_REGISTER_CALLBACKS */