diff --git a/drivers/staging/rts_pstor/ms.c b/drivers/staging/rts_pstor/ms.c
index a624f40..c43f911 100644
--- a/drivers/staging/rts_pstor/ms.c
+++ b/drivers/staging/rts_pstor/ms.c
@@ -3594,7 +3594,7 @@ void ms_free_l2p_tbl(struct rtsx_chip *chip)
 #ifdef SUPPORT_MAGIC_GATE
 
 #ifdef READ_BYTES_WAIT_INT
-int ms_poll_int(struct rtsx_chip *chip)
+static int ms_poll_int(struct rtsx_chip *chip)
 {
 	int retval;
 	u8 val;
diff --git a/drivers/staging/rts_pstor/rtsx.c b/drivers/staging/rts_pstor/rtsx.c
index 2b18379..c3f33d1 100644
--- a/drivers/staging/rts_pstor/rtsx.c
+++ b/drivers/staging/rts_pstor/rtsx.c
@@ -257,7 +257,7 @@ static int bus_reset(struct scsi_cmnd *srb)
  * this defines our host template, with which we'll allocate hosts
  */
 
-struct scsi_host_template rtsx_host_template = {
+static struct scsi_host_template rtsx_host_template = {
 	/* basic userland interface stuff */
 	.name =				CR_DRIVER_NAME,
 	.proc_name =			CR_DRIVER_NAME,
@@ -436,7 +436,7 @@ static int rtsx_resume(struct pci_dev *pci)
 }
 #endif /* CONFIG_PM */
 
-void rtsx_shutdown(struct pci_dev *pci)
+static void rtsx_shutdown(struct pci_dev *pci)
 {
 	struct rtsx_dev *dev = (struct rtsx_dev *)pci_get_drvdata(pci);
 	struct rtsx_chip *chip;
diff --git a/drivers/staging/rts_pstor/rtsx_card.c b/drivers/staging/rts_pstor/rtsx_card.c
index fe4cce0..4f971f2 100644
--- a/drivers/staging/rts_pstor/rtsx_card.c
+++ b/drivers/staging/rts_pstor/rtsx_card.c
@@ -300,7 +300,7 @@ void do_reset_ms_card(struct rtsx_chip *chip)
 	}
 }
 
-void release_sdio(struct rtsx_chip *chip)
+static void release_sdio(struct rtsx_chip *chip)
 {
 	if (chip->sd_io) {
 		rtsx_write_register(chip, CARD_STOP, SD_STOP | SD_CLR_ERR,
diff --git a/drivers/staging/rts_pstor/rtsx_chip.c b/drivers/staging/rts_pstor/rtsx_chip.c
index a4d8eb2..f443d97 100644
--- a/drivers/staging/rts_pstor/rtsx_chip.c
+++ b/drivers/staging/rts_pstor/rtsx_chip.c
@@ -657,7 +657,7 @@ static inline int check_sd_current_prior(u32 sd_current_prior)
 	return !fake_para;
 }
 
-int rts5209_init(struct rtsx_chip *chip)
+static int rts5209_init(struct rtsx_chip *chip)
 {
 	int retval;
 	u32 lval = 0;
@@ -805,7 +805,7 @@ int rts5209_init(struct rtsx_chip *chip)
 	return STATUS_SUCCESS;
 }
 
-int rts5208_init(struct rtsx_chip *chip)
+static int rts5208_init(struct rtsx_chip *chip)
 {
 	int retval;
 	u16 reg = 0;
@@ -871,7 +871,7 @@ int rts5208_init(struct rtsx_chip *chip)
 	return STATUS_SUCCESS;
 }
 
-int rts5288_init(struct rtsx_chip *chip)
+static int rts5288_init(struct rtsx_chip *chip)
 {
 	int retval;
 	u8 val = 0, max_func;
@@ -1097,7 +1097,7 @@ static inline void rtsx_blink_led(struct rtsx_chip *chip)
 }
 #endif
 
-void rtsx_monitor_aspm_config(struct rtsx_chip *chip)
+static void rtsx_monitor_aspm_config(struct rtsx_chip *chip)
 {
 	int maybe_support_aspm, reg_changed;
 	u32 tmp = 0;
diff --git a/drivers/staging/rts_pstor/rtsx_scsi.c b/drivers/staging/rts_pstor/rtsx_scsi.c
index ce9fc16..20c2464 100644
--- a/drivers/staging/rts_pstor/rtsx_scsi.c
+++ b/drivers/staging/rts_pstor/rtsx_scsi.c
@@ -274,7 +274,7 @@ static int test_unit_ready(struct scsi_cmnd *srb, struct rtsx_chip *chip)
 	return TRANSPORT_GOOD;
 }
 
-unsigned char formatter_inquiry_str[20] = {
+static unsigned char formatter_inquiry_str[20] = {
 	'M', 'E', 'M', 'O', 'R', 'Y', 'S', 'T', 'I', 'C', 'K',
 #ifdef SUPPORT_MAGIC_GATE
 	'-', 'M', 'G', /* Byte[47:49] */
@@ -2690,7 +2690,7 @@ static int ms_format_cmnd(struct scsi_cmnd *srb, struct rtsx_chip *chip)
 }
 
 #ifdef SUPPORT_PCGL_1P18
-int get_ms_information(struct scsi_cmnd *srb, struct rtsx_chip *chip)
+static int get_ms_information(struct scsi_cmnd *srb, struct rtsx_chip *chip)
 {
 	struct ms_info *ms_card = &(chip->ms_card);
 	unsigned int lun = SCSI_LUN(srb);
@@ -2864,7 +2864,7 @@ static int sd_extention_cmnd(struct scsi_cmnd *srb, struct rtsx_chip *chip)
 #endif
 
 #ifdef SUPPORT_MAGIC_GATE
-int mg_report_key(struct scsi_cmnd *srb, struct rtsx_chip *chip)
+static int mg_report_key(struct scsi_cmnd *srb, struct rtsx_chip *chip)
 {
 	struct ms_info *ms_card = &(chip->ms_card);
 	unsigned int lun = SCSI_LUN(srb);
@@ -2962,7 +2962,7 @@ int mg_report_key(struct scsi_cmnd *srb, struct rtsx_chip *chip)
 	return TRANSPORT_GOOD;
 }
 
-int mg_send_key(struct scsi_cmnd *srb, struct rtsx_chip *chip)
+static int mg_send_key(struct scsi_cmnd *srb, struct rtsx_chip *chip)
 {
 	struct ms_info *ms_card = &(chip->ms_card);
 	unsigned int lun = SCSI_LUN(srb);
diff --git a/drivers/staging/rts_pstor/rtsx_transport.c b/drivers/staging/rts_pstor/rtsx_transport.c
index 3b160dc..4e3d2c1 100644
--- a/drivers/staging/rts_pstor/rtsx_transport.c
+++ b/drivers/staging/rts_pstor/rtsx_transport.c
@@ -324,7 +324,7 @@ static inline void rtsx_add_sg_tbl(
 	} while (len);
 }
 
-int rtsx_transfer_sglist_adma_partial(struct rtsx_chip *chip, u8 card,
+static int rtsx_transfer_sglist_adma_partial(struct rtsx_chip *chip, u8 card,
 		struct scatterlist *sg, int num_sg, unsigned int *index,
 		unsigned int *offset, int size,
 		enum dma_data_direction dma_dir, int timeout)
@@ -485,7 +485,7 @@ out:
 	return err;
 }
 
-int rtsx_transfer_sglist_adma(struct rtsx_chip *chip, u8 card,
+static int rtsx_transfer_sglist_adma(struct rtsx_chip *chip, u8 card,
 		struct scatterlist *sg, int num_sg,
 		enum dma_data_direction dma_dir, int timeout)
 {
@@ -632,7 +632,7 @@ out:
 	return err;
 }
 
-int rtsx_transfer_buf(struct rtsx_chip *chip, u8 card, void *buf, size_t len,
+static int rtsx_transfer_buf(struct rtsx_chip *chip, u8 card, void *buf, size_t len,
 		enum dma_data_direction dma_dir, int timeout)
 {
 	struct rtsx_dev *rtsx = chip->rtsx;
diff --git a/drivers/staging/rts_pstor/sd.c b/drivers/staging/rts_pstor/sd.c
index 945c95f..80b61e6 100644
--- a/drivers/staging/rts_pstor/sd.c
+++ b/drivers/staging/rts_pstor/sd.c
@@ -32,30 +32,30 @@
 
 #define SD_MAX_RETRY_COUNT	3
 
-u16 REG_SD_CFG1;
-u16 REG_SD_CFG2;
-u16 REG_SD_CFG3;
-u16 REG_SD_STAT1;
-u16 REG_SD_STAT2;
-u16 REG_SD_BUS_STAT;
-u16 REG_SD_PAD_CTL;
-u16 REG_SD_SAMPLE_POINT_CTL;
-u16 REG_SD_PUSH_POINT_CTL;
-u16 REG_SD_CMD0;
-u16 REG_SD_CMD1;
-u16 REG_SD_CMD2;
-u16 REG_SD_CMD3;
-u16 REG_SD_CMD4;
-u16 REG_SD_CMD5;
-u16 REG_SD_BYTE_CNT_L;
-u16 REG_SD_BYTE_CNT_H;
-u16 REG_SD_BLOCK_CNT_L;
-u16 REG_SD_BLOCK_CNT_H;
-u16 REG_SD_TRANSFER;
-u16 REG_SD_VPCLK0_CTL;
-u16 REG_SD_VPCLK1_CTL;
-u16 REG_SD_DCMPS0_CTL;
-u16 REG_SD_DCMPS1_CTL;
+static u16 REG_SD_CFG1;
+static u16 REG_SD_CFG2;
+static u16 REG_SD_CFG3;
+static u16 REG_SD_STAT1;
+static u16 REG_SD_STAT2;
+static u16 REG_SD_BUS_STAT;
+static u16 REG_SD_PAD_CTL;
+static u16 REG_SD_SAMPLE_POINT_CTL;
+static u16 REG_SD_PUSH_POINT_CTL;
+static u16 REG_SD_CMD0;
+static u16 REG_SD_CMD1;
+static u16 REG_SD_CMD2;
+static u16 REG_SD_CMD3;
+static u16 REG_SD_CMD4;
+static u16 REG_SD_CMD5;
+static u16 REG_SD_BYTE_CNT_L;
+static u16 REG_SD_BYTE_CNT_H;
+static u16 REG_SD_BLOCK_CNT_L;
+static u16 REG_SD_BLOCK_CNT_H;
+static u16 REG_SD_TRANSFER;
+static u16 REG_SD_VPCLK0_CTL;
+static u16 REG_SD_VPCLK1_CTL;
+static u16 REG_SD_DCMPS0_CTL;
+static u16 REG_SD_DCMPS1_CTL;
 
 static inline void sd_set_err_code(struct rtsx_chip *chip, u8 err_code)
 {
diff --git a/drivers/staging/rts_pstor/spi.c b/drivers/staging/rts_pstor/spi.c
index e068200..8a8689b 100644
--- a/drivers/staging/rts_pstor/spi.c
+++ b/drivers/staging/rts_pstor/spi.c
@@ -221,7 +221,7 @@ static int spi_init_eeprom(struct rtsx_chip *chip)
 	return STATUS_SUCCESS;
 }
 
-int spi_eeprom_program_enable(struct rtsx_chip *chip)
+static int spi_eeprom_program_enable(struct rtsx_chip *chip)
 {
 	int retval;
 
