diff --git a/drivers/input/touchscreen/himax_v2_mmi/himax_ic_incell_core.c b/drivers/input/touchscreen/himax_v2_mmi/himax_ic_incell_core.c
index a27573bdd528..c44e13f81cb3 100644
--- a/drivers/input/touchscreen/himax_v2_mmi/himax_ic_incell_core.c
+++ b/drivers/input/touchscreen/himax_v2_mmi/himax_ic_incell_core.c
@@ -35,12 +35,7 @@ EXPORT_SYMBOL(pzf_op);
 void (*himax_mcu_cmd_struct_free)(void);
 static uint8_t *g_internal_buffer;
 
-#define HX_SPI_6125_MAX_WRITE_SZ  (16-4)
-#define __MTK_SPI__
-#ifdef HX_SPI_MTK_MAX_WRITE_SZ
-#undef HX_SPI_MTK_MAX_WRITE_SZ
-#define HX_SPI_MTK_MAX_WRITE_SZ   (16-4)
-#endif
+#define HX_SPI_6125_MAX_WRITE_SZ  (4096-4)
 
 #ifdef CORE_IC
 /* IC side start*/
@@ -2457,8 +2452,8 @@ void himax_mcu_clean_sram_0f(uint8_t *addr, int write_len, int type)
 	else
 		max_bus_size = write_len;
 #else
-	if (total_size > 4096)
-		max_bus_size = 4096;
+	if (total_size > HX_SPI_6125_MAX_WRITE_SZ - 4)
+		max_bus_size = HX_SPI_6125_MAX_WRITE_SZ - 4;
 #endif
 
 	total_size_temp = write_len;
diff --git a/drivers/input/touchscreen/himax_v2_mmi/himax_platform_QCT_SPI.c b/drivers/input/touchscreen/himax_v2_mmi/himax_platform_QCT_SPI.c
old mode 100644
new mode 100755
index 9411b71da0b6..24b3dad9167c
--- a/drivers/input/touchscreen/himax_v2_mmi/himax_platform_QCT_SPI.c
+++ b/drivers/input/touchscreen/himax_v2_mmi/himax_platform_QCT_SPI.c
@@ -21,7 +21,7 @@ int irq_enable_count;
 EXPORT_SYMBOL(irq_enable_count);
 struct spi_device *spi;
 
-#define PACKET_MAX_SZ (256 + 2)
+#define PACKET_MAX_SZ (4096 + 2)
 static uint8_t *gBuffer;
 
 int himax_dev_set(struct himax_ts_data *ts)