diff --git a/drivers/gpu/drm/msm/samsung_lego/ss_dsi_panel_debug.c b/drivers/gpu/drm/msm/samsung_lego/ss_dsi_panel_debug.c
index 2d123d4d175c..ee7ba21a343d 100755
--- a/drivers/gpu/drm/msm/samsung_lego/ss_dsi_panel_debug.c
+++ b/drivers/gpu/drm/msm/samsung_lego/ss_dsi_panel_debug.c
@@ -386,7 +386,7 @@ static const struct file_operations xlog_dump_ops = {
 };
 
 #define SS_ONCE_LOG_BUF_MAX	(1024)
-static debug_display_read_once(struct samsung_display_driver_data *vdd,
+static ssize_t debug_display_read_once(struct samsung_display_driver_data *vdd,
 				char __user *buff, loff_t *ppos)
 {
 	struct dsi_panel *panel = GET_DSI_PANEL(vdd);
diff --git a/drivers/net/wireless/qualcomm/wcn39xx/qca-wifi-host-cmn/hif/src/ce/ce_service_legacy.c b/drivers/net/wireless/qualcomm/wcn39xx/qca-wifi-host-cmn/hif/src/ce/ce_service_legacy.c
index 0997fccce51a..366069e97a25 100755
--- a/drivers/net/wireless/qualcomm/wcn39xx/qca-wifi-host-cmn/hif/src/ce/ce_service_legacy.c
+++ b/drivers/net/wireless/qualcomm/wcn39xx/qca-wifi-host-cmn/hif/src/ce/ce_service_legacy.c
@@ -1317,7 +1317,7 @@ struct ce_ops ce_service_legacy = {
 #endif
 };
 
-struct ce_ops *ce_services_legacy()
+struct ce_ops *ce_services_legacy(void)
 {
 	return &ce_service_legacy;
 }
diff --git a/drivers/net/wireless/qualcomm/wcn39xx/qca-wifi-host-cmn/target_if/core/src/target_if_main.c b/drivers/net/wireless/qualcomm/wcn39xx/qca-wifi-host-cmn/target_if/core/src/target_if_main.c
index a37f721f8726..c69a3cde9337 100755
--- a/drivers/net/wireless/qualcomm/wcn39xx/qca-wifi-host-cmn/target_if/core/src/target_if_main.c
+++ b/drivers/net/wireless/qualcomm/wcn39xx/qca-wifi-host-cmn/target_if/core/src/target_if_main.c
@@ -86,7 +86,7 @@
 
 static struct target_if_ctx *g_target_if_ctx;
 
-struct target_if_ctx *target_if_get_ctx()
+struct target_if_ctx *target_if_get_ctx(void)
 {
 	return g_target_if_ctx;
 }
diff --git a/drivers/net/wireless/qualcomm/wcn39xx/qcacld-3.0/core/hdd/src/wlan_hdd_main.c b/drivers/net/wireless/qualcomm/wcn39xx/qcacld-3.0/core/hdd/src/wlan_hdd_main.c
index e7e20be43df6..86ce16a1552e 100755
--- a/drivers/net/wireless/qualcomm/wcn39xx/qcacld-3.0/core/hdd/src/wlan_hdd_main.c
+++ b/drivers/net/wireless/qualcomm/wcn39xx/qcacld-3.0/core/hdd/src/wlan_hdd_main.c
@@ -16122,7 +16122,7 @@ static void hdd_driver_unload(void)
 }
 
 #if defined (SEC_CONFIG_PSM_SYSFS)
-int wlan_hdd_sec_get_psm()
+int wlan_hdd_sec_get_psm(void)
 {
 	int psm = 0;
 
diff --git a/drivers/net/wireless/qualcomm/wcn39xx/qcacld-3.0/core/mac/src/include/parser_api.h b/drivers/net/wireless/qualcomm/wcn39xx/qcacld-3.0/core/mac/src/include/parser_api.h
index 32079b16a0c9..b8c72a116024 100755
--- a/drivers/net/wireless/qualcomm/wcn39xx/qcacld-3.0/core/mac/src/include/parser_api.h
+++ b/drivers/net/wireless/qualcomm/wcn39xx/qcacld-3.0/core/mac/src/include/parser_api.h
@@ -1025,7 +1025,7 @@ QDF_STATUS populate_dot11f_rrm_ie(struct mac_context *mac,
 				struct pe_session *pe_session);
 
 void populate_mdie(struct mac_context *mac, tDot11fIEMobilityDomain *pDot11f,
-		   uint8_t mdie[]);
+		   uint8_t mdie[SIR_MDIE_SIZE]);
 
 #ifdef WLAN_FEATURE_FILS_SK
 /**
diff --git a/drivers/samsung/quest/sec_quest_param.c b/drivers/samsung/quest/sec_quest_param.c
index a67cac781e4e..ce939a76f08f 100755
--- a/drivers/samsung/quest/sec_quest_param.c
+++ b/drivers/samsung/quest/sec_quest_param.c
@@ -106,7 +106,7 @@ void print_result_with_item_string(uint64_t item_result, char** str_array)
 }
 
 
-void quest_print_param_quest_data()
+void quest_print_param_quest_data(void)
 {
 	QUEST_PRINT("======================\n");
 
@@ -184,7 +184,7 @@ void quest_print_param_quest_data()
 	QUEST_PRINT("======================\n");
 }
 
-void quest_load_param_quest_data()
+void quest_load_param_quest_data(void)
 {
 	if (!sec_get_param(param_index_quest, &param_quest_data))
 		QUEST_PRINT("%s : failed\n", __func__);
@@ -192,7 +192,7 @@ void quest_load_param_quest_data()
 		QUEST_PRINT("%s : succeeded\n", __func__);	
 }
 
-void quest_sync_param_quest_data()
+void quest_sync_param_quest_data(void)
 {
 	if (!sec_set_param(param_index_quest, &param_quest_data))
 		QUEST_PRINT("%s : failed\n", __func__);
@@ -226,7 +226,7 @@ void quest_sync_param_quest_ddr_result_data(void)
 #define DDR_SCAN_CNT     0
 #endif
 
-void quest_clear_param_quest_data()
+void quest_clear_param_quest_data(void)
 {
 	param_quest_data.smd_item_result = 0;
 	param_quest_data.smd_subitem_result = 0;
@@ -291,7 +291,7 @@ void quest_clear_param_quest_data()
 	quest_sync_param_quest_ddr_result_data();
 }
 
-void quest_initialize_curr_step()
+void quest_initialize_curr_step(void)
 {
 	param_quest_data.curr_step = STEP_NONE;
 	param_quest_data.hlos_remained_count = 0;
@@ -305,7 +305,7 @@ void quest_initialize_curr_step()
 }
 
 
-void quest_load_param_api_gpio_test()
+void quest_load_param_api_gpio_test(void)
 {
 	if (!sec_get_param(param_index_api_gpio_test, &param_api_gpio_test))
 		QUEST_PRINT("%s : failed\n", __func__);
@@ -313,7 +313,7 @@ void quest_load_param_api_gpio_test()
 		QUEST_PRINT("%s : succeeded\n", __func__);
 }
 
-void quest_sync_param_api_gpio_test()
+void quest_sync_param_api_gpio_test(void)
 {
 	if (!sec_set_param(param_index_api_gpio_test, &param_api_gpio_test))
 		QUEST_PRINT("%s : failed\n", __func__);
@@ -321,7 +321,7 @@ void quest_sync_param_api_gpio_test()
 		QUEST_PRINT("%s : succeeded\n", __func__);		
 }
 
-void quest_load_param_api_gpio_test_result()
+void quest_load_param_api_gpio_test_result(void)
 {
 	if (!sec_get_param(param_index_api_gpio_test_result, param_api_gpio_test_result))
 		QUEST_PRINT("%s : failed\n", __func__);
@@ -329,7 +329,7 @@ void quest_load_param_api_gpio_test_result()
 		QUEST_PRINT("%s : succeeded\n", __func__);
 }
 
-void quest_sync_param_api_gpio_test_result()
+void quest_sync_param_api_gpio_test_result(void)
 {
 	if (!sec_set_param(param_index_api_gpio_test_result, param_api_gpio_test_result))
 		QUEST_PRINT("%s : failed\n", __func__);
diff --git a/drivers/soc/qcom/memshare/msm_memshare.c b/drivers/soc/qcom/memshare/msm_memshare.c
index 41142ad022ff..2cab791c1b79 100755
--- a/drivers/soc/qcom/memshare/msm_memshare.c
+++ b/drivers/soc/qcom/memshare/msm_memshare.c
@@ -49,7 +49,7 @@ static void *memshare_ramdump_dev[MAX_CLIENTS];
 static struct device *memshare_dev[MAX_CLIENTS];
 
 #ifdef CONFIG_CP_DYNAMIC_MEM_RESERVE
-extern sec_reserved_mem(void);
+extern unsigned int sec_reserved_mem(void);
 #define RESERVE_MEM_LEVEL1_MASK (1u << 2)
 #define RESERVE_MEM_LEVEL2_MASK (1u << 3)
 #endif