isp_wrapper: check sensor pointer at init time

Add an assert in the stm32_dcmipp_isp_init function to check
the validity of the sensor parameter. This pointer is later on
used by all ISP ops.

Signed-off-by: Alain Volmat <[email protected]>

Author: Alain Volmat

isp_wrapper/src/isp_wrapper.c

@@ -68,8 +68,6 @@ static ISP_StatusTypeDef isp_SetSensorGain(uint32_t Instance, int32_t Gain)
   struct video_control ctrl;
   int ret;
 
-  assert(sensor_i);
-
   ctrl.id = VIDEO_CID_ANALOGUE_GAIN;
   ctrl.val = Gain;
   ret = video_set_ctrl(sensor_i, &ctrl);
@@ -97,8 +95,6 @@ static ISP_StatusTypeDef isp_SetSensorExposure(uint32_t Instance, int32_t Exposu
   struct video_control ctrl;
   int ret;
 
-  assert(sensor_i);
-
   ctrl.id = VIDEO_CID_EXPOSURE;
   ctrl.val = Exposure / IMX335_1H_PERIOD_USEC;
   ret = video_set_ctrl(sensor_i, &ctrl);
@@ -148,6 +144,8 @@ int stm32_dcmipp_isp_init(DCMIPP_HandleTypeDef *hdcmipp, const struct device *se
   k_tid_t isp_tid;
   int res;
 
+  assert(sensor);
+
   sensor_i = sensor;
   res = ISP_Init(&isp_i, hdcmipp, 0, &isp_helpers, &ISP_IQParamCacheInit_IMX335);
   if (res)