diff --git a/drivers/staging/media/atomisp/include/hmm/hmm.h b/drivers/staging/media/atomisp/include/hmm/hmm.h
index 90d442fef4e8..5d72e2baa1f2 100644
--- a/drivers/staging/media/atomisp/include/hmm/hmm.h
+++ b/drivers/staging/media/atomisp/include/hmm/hmm.h
@@ -87,14 +87,6 @@ ia_css_ptr hmm_host_vaddr_to_hrt_vaddr(const void *ptr);
  */
 int hmm_mmap(struct vm_area_struct *vma, ia_css_ptr virt);
 
-/* show memory statistic
- */
-void hmm_show_mem_stat(const char *func, const int line);
-
-/* init memory statistic
- */
-void hmm_init_mem_stat(int res_pgnr, int dyc_en, int dyc_pgnr);
-
 extern bool dypool_enable;
 extern unsigned int dypool_pgnr;
 extern struct hmm_bo_device bo_device;
diff --git a/drivers/staging/media/atomisp/include/hmm/hmm_common.h b/drivers/staging/media/atomisp/include/hmm/hmm_common.h
index 7152e9b52ba4..d8610b135de0 100644
--- a/drivers/staging/media/atomisp/include/hmm/hmm_common.h
+++ b/drivers/staging/media/atomisp/include/hmm/hmm_common.h
@@ -68,30 +68,4 @@
 #define	check_null_return_void(ptr, fmt, arg ...)	\
 		var_equal_return_void(ptr, NULL, fmt, ## arg)
 
-/* hmm_mem_stat is used to trace the hmm mem used by ISP pipe. The unit is page
- * number.
- *
- * res_size:  reserved mem pool size, being allocated from system at system boot time.
- *		res_size >= res_cnt.
- * sys_size:  system mem pool size, being allocated from system at camera running time.
- *		dyc_size:  dynamic mem pool size.
- *		dyc_thr:   dynamic mem pool high watermark.
- *		dyc_size <= dyc_thr.
- * usr_size:  user ptr mem size.
- *
- * res_cnt:   track the mem allocated from reserved pool at camera running time.
- * tol_cnt:   track the total mem used by ISP pipe at camera running time.
- */
-struct _hmm_mem_stat {
-	int res_size;
-	int sys_size;
-	int dyc_size;
-	int dyc_thr;
-	int usr_size;
-	int res_cnt;
-	int tol_cnt;
-};
-
-extern struct _hmm_mem_stat hmm_mem_stat;
-
 #endif
diff --git a/drivers/staging/media/atomisp/pci/atomisp_drvfs.c b/drivers/staging/media/atomisp/pci/atomisp_drvfs.c
index dcb571f515a7..3ddc935ec01d 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_drvfs.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_drvfs.c
@@ -45,10 +45,8 @@ struct _iunit_debug {
 
 #define OPTION_BIN_LIST			BIT(0)
 #define OPTION_BIN_RUN			BIT(1)
-#define OPTION_MEM_STAT			BIT(2)
 #define OPTION_VALID			(OPTION_BIN_LIST \
-					| OPTION_BIN_RUN \
-					| OPTION_MEM_STAT)
+					| OPTION_BIN_RUN)
 
 static struct _iunit_debug iunit_debug = {
 	.dbglvl = 0,
@@ -81,9 +79,6 @@ static inline int iunit_dump_dbgopt(struct atomisp_device *isp,
 				goto opt_err;
 			}
 		}
-
-		if (opt & OPTION_MEM_STAT)
-			hmm_show_mem_stat(__func__, __LINE__);
 	} else {
 		ret = -EINVAL;
 		dev_err(isp->dev, "%s dump nothing[ret=%d]\n", __func__, ret);
diff --git a/drivers/staging/media/atomisp/pci/atomisp_v4l2.c b/drivers/staging/media/atomisp/pci/atomisp_v4l2.c
index 3fd0c526193f..0ec3f5b98ae1 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_v4l2.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_v4l2.c
@@ -1770,7 +1770,6 @@ static int atomisp_pci_probe(struct pci_dev *pdev, const struct pci_device_id *i
 	pm_runtime_put_noidle(&pdev->dev);
 	pm_runtime_allow(&pdev->dev);
 
-	hmm_init_mem_stat(repool_pgnr, dypool_enable, dypool_pgnr);
 	/* Init ISP memory management */
 	hmm_init();
 
diff --git a/drivers/staging/media/atomisp/pci/hmm/hmm.c b/drivers/staging/media/atomisp/pci/hmm/hmm.c
index c623ab6952de..03e6d766381f 100644
--- a/drivers/staging/media/atomisp/pci/hmm/hmm.c
+++ b/drivers/staging/media/atomisp/pci/hmm/hmm.c
@@ -38,7 +38,6 @@
 struct hmm_bo_device bo_device;
 static ia_css_ptr dummy_ptr = mmgr_EXCEPTION;
 static bool hmm_initialized;
-struct _hmm_mem_stat hmm_mem_stat;
 
 /*
  * p: private
@@ -209,8 +208,6 @@ ia_css_ptr hmm_alloc(size_t bytes, enum hmm_bo_type type,
 		goto bind_err;
 	}
 
-	hmm_mem_stat.tol_cnt += pgnr;
-
 	if (attrs & ATOMISP_MAP_FLAG_CLEARED)
 		hmm_set(bo->start, 0, bytes);
 
@@ -246,8 +243,6 @@ void hmm_free(ia_css_ptr virt)
 		return;
 	}
 
-	hmm_mem_stat.tol_cnt -= bo->pgnr;
-
 	hmm_bo_unbind(bo);
 	hmm_bo_free_pages(bo);
 	hmm_bo_unref(bo);
@@ -627,34 +622,3 @@ ia_css_ptr hmm_host_vaddr_to_hrt_vaddr(const void *ptr)
 		ptr);
 	return 0;
 }
-
-void hmm_show_mem_stat(const char *func, const int line)
-{
-	pr_info("tol_cnt=%d usr_size=%d res_size=%d res_cnt=%d sys_size=%d  dyc_thr=%d dyc_size=%d.\n",
-		hmm_mem_stat.tol_cnt,
-		hmm_mem_stat.usr_size, hmm_mem_stat.res_size,
-		hmm_mem_stat.res_cnt, hmm_mem_stat.sys_size,
-		hmm_mem_stat.dyc_thr, hmm_mem_stat.dyc_size);
-}
-
-void hmm_init_mem_stat(int res_pgnr, int dyc_en, int dyc_pgnr)
-{
-	hmm_mem_stat.res_size = res_pgnr;
-	/* If reserved mem pool is not enabled, set its "mem stat" values as -1. */
-	if (hmm_mem_stat.res_size == 0) {
-		hmm_mem_stat.res_size = -1;
-		hmm_mem_stat.res_cnt = -1;
-	}
-
-	/* If dynamic memory pool is not enabled, set its "mem stat" values as -1. */
-	if (!dyc_en) {
-		hmm_mem_stat.dyc_size = -1;
-		hmm_mem_stat.dyc_thr = -1;
-	} else {
-		hmm_mem_stat.dyc_size = 0;
-		hmm_mem_stat.dyc_thr = dyc_pgnr;
-	}
-	hmm_mem_stat.usr_size = 0;
-	hmm_mem_stat.sys_size = 0;
-	hmm_mem_stat.tol_cnt = 0;
-}
diff --git a/drivers/staging/media/atomisp/pci/hmm/hmm_bo.c b/drivers/staging/media/atomisp/pci/hmm/hmm_bo.c
index d44117c0f5e7..0118c0b5acc8 100644
--- a/drivers/staging/media/atomisp/pci/hmm/hmm_bo.c
+++ b/drivers/staging/media/atomisp/pci/hmm/hmm_bo.c
@@ -651,7 +651,6 @@ static void free_private_bo_pages(struct hmm_buffer_object *bo,
 			*/
 			if (!ret) {
 				__free_pages(bo->page_obj[i].page, 0);
-				hmm_mem_stat.sys_size--;
 			}
 			break;
 		}
@@ -762,7 +761,6 @@ static int alloc_private_pages(struct hmm_buffer_object *bo,
 			}
 
 			pgnr -= blk_pgnr;
-			hmm_mem_stat.sys_size += blk_pgnr;
 
 			/*
 			 * if order is not reduced this time, clear
@@ -796,8 +794,6 @@ static void free_user_pages(struct hmm_buffer_object *bo,
 {
 	int i;
 
-	hmm_mem_stat.usr_size -= bo->pgnr;
-
 	if (bo->mem_type == HMM_BO_MEM_TYPE_PFN) {
 		unpin_user_pages(bo->pages, page_nr);
 	} else {
@@ -870,8 +866,6 @@ static int alloc_user_pages(struct hmm_buffer_object *bo,
 		bo->pgnr,
 		bo->mem_type == HMM_BO_MEM_TYPE_USER ? "user" : "pfn", page_nr);
 
-	hmm_mem_stat.usr_size += bo->pgnr;
-
 	/* can be written by caller, not forced */
 	if (page_nr != bo->pgnr) {
 		dev_err(atomisp_dev,
