spi: pxa2xx_spi "sparse" fixes

Various cleanups to pxa2xx_spi suggested by "sparse": make sure that
register addresess are "void __iomem *", and make a few functions properly
static.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Ned Forrester <nforrester@whoi.edu>
Cc: Stephen Street <stephen@streetfiresound.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 28 insertions, 24 deletions

diff --git a/drivers/spi/pxa2xx_spi.c b/drivers/spi/pxa2xx_spi.c
index 147e26a78d64..654bb58be630 100644
--- a/drivers/spi/pxa2xx_spi.c
+++ b/drivers/spi/pxa2xx_spi.c
@@ -67,8 +67,11 @@ MODULE_ALIAS("platform:pxa2xx-spi");
                                 | SSCR1_SPH | SSCR1_SPO | SSCR1_LBM)
 
 #define DEFINE_SSP_REG(reg, off) \
-static inline u32 read_##reg(void *p) { return __raw_readl(p + (off)); } \
-static inline void write_##reg(u32 v, void *p) { __raw_writel(v, p + (off)); }
+static inline u32 read_##reg(void const __iomem *p) \
+{ return __raw_readl(p + (off)); } \
+\
+static inline void write_##reg(u32 v, void __iomem *p) \
+{ __raw_writel(v, p + (off)); }
 
 DEFINE_SSP_REG(SSCR0, 0x00)
 DEFINE_SSP_REG(SSCR1, 0x04)
@@ -106,7 +109,7 @@ struct driver_data {
         u32 *null_dma_buf;
 
         /* SSP register addresses */
-        void *ioaddr;
+        void __iomem *ioaddr;
         u32 ssdr_physical;
 
         /* SSP masks*/
@@ -173,7 +176,7 @@ static int flush(struct driver_data *drv_data)
 {
         unsigned long limit = loops_per_jiffy << 1;
 
-        void *reg = drv_data->ioaddr;
+        void __iomem *reg = drv_data->ioaddr;
 
         do {
                 while (read_SSSR(reg) & SSSR_RNE) {
@@ -191,7 +194,7 @@ static void null_cs_control(u32 command)
 
 static int null_writer(struct driver_data *drv_data)
 {
-        void *reg = drv_data->ioaddr;
+        void __iomem *reg = drv_data->ioaddr;
         u8 n_bytes = drv_data->n_bytes;
 
         if (((read_SSSR(reg) & 0x00000f00) == 0x00000f00)
@@ -206,7 +209,7 @@ static int null_writer(struct driver_data *drv_data)
 
 static int null_reader(struct driver_data *drv_data)
 {
-        void *reg = drv_data->ioaddr;
+        void __iomem *reg = drv_data->ioaddr;
         u8 n_bytes = drv_data->n_bytes;
 
         while ((read_SSSR(reg) & SSSR_RNE)
@@ -220,7 +223,7 @@ static int null_reader(struct driver_data *drv_data)
 
 static int u8_writer(struct driver_data *drv_data)
 {
-        void *reg = drv_data->ioaddr;
+        void __iomem *reg = drv_data->ioaddr;
 
         if (((read_SSSR(reg) & 0x00000f00) == 0x00000f00)
                 || (drv_data->tx == drv_data->tx_end))
@@ -234,7 +237,7 @@ static int u8_writer(struct driver_data *drv_data)
 
 static int u8_reader(struct driver_data *drv_data)
 {
-        void *reg = drv_data->ioaddr;
+        void __iomem *reg = drv_data->ioaddr;
 
         while ((read_SSSR(reg) & SSSR_RNE)
                 && (drv_data->rx < drv_data->rx_end)) {
@@ -247,7 +250,7 @@ static int u8_reader(struct driver_data *drv_data)
 
 static int u16_writer(struct driver_data *drv_data)
 {
-        void *reg = drv_data->ioaddr;
+        void __iomem *reg = drv_data->ioaddr;
 
         if (((read_SSSR(reg) & 0x00000f00) == 0x00000f00)
                 || (drv_data->tx == drv_data->tx_end))
@@ -261,7 +264,7 @@ static int u16_writer(struct driver_data *drv_data)
 
 static int u16_reader(struct driver_data *drv_data)
 {
-        void *reg = drv_data->ioaddr;
+        void __iomem *reg = drv_data->ioaddr;
 
         while ((read_SSSR(reg) & SSSR_RNE)
                 && (drv_data->rx < drv_data->rx_end)) {
@@ -274,7 +277,7 @@ static int u16_reader(struct driver_data *drv_data)
 
 static int u32_writer(struct driver_data *drv_data)
 {
-        void *reg = drv_data->ioaddr;
+        void __iomem *reg = drv_data->ioaddr;
 
         if (((read_SSSR(reg) & 0x00000f00) == 0x00000f00)
                 || (drv_data->tx == drv_data->tx_end))
@@ -288,7 +291,7 @@ static int u32_writer(struct driver_data *drv_data)
 
 static int u32_reader(struct driver_data *drv_data)
 {
-        void *reg = drv_data->ioaddr;
+        void __iomem *reg = drv_data->ioaddr;
 
         while ((read_SSSR(reg) & SSSR_RNE)
                 && (drv_data->rx < drv_data->rx_end)) {
@@ -412,7 +415,7 @@ static void giveback(struct driver_data *drv_data)
                 msg->complete(msg->context);
 }
 
-static int wait_ssp_rx_stall(void *ioaddr)
+static int wait_ssp_rx_stall(void const __iomem *ioaddr)
 {
         unsigned long limit = loops_per_jiffy << 1;
 
@@ -432,9 +435,9 @@ static int wait_dma_channel_stop(int channel)
         return limit;
 }
 
-void dma_error_stop(struct driver_data *drv_data, const char *msg)
+static void dma_error_stop(struct driver_data *drv_data, const char *msg)
 {
-        void *reg = drv_data->ioaddr;
+        void __iomem *reg = drv_data->ioaddr;
 
         /* Stop and reset */
         DCSR(drv_data->rx_channel) = RESET_DMA_CHANNEL;
@@ -456,7 +459,7 @@ void dma_error_stop(struct driver_data *drv_data, const char *msg)
 
 static void dma_transfer_complete(struct driver_data *drv_data)
 {
-        void *reg = drv_data->ioaddr;
+        void __iomem *reg = drv_data->ioaddr;
         struct spi_message *msg = drv_data->cur_msg;
 
         /* Clear and disable interrupts on SSP and DMA channels*/
@@ -536,7 +539,7 @@ static void dma_handler(int channel, void *data)
 static irqreturn_t dma_transfer(struct driver_data *drv_data)
 {
         u32 irq_status;
-        void *reg = drv_data->ioaddr;
+        void __iomem *reg = drv_data->ioaddr;
 
         irq_status = read_SSSR(reg) & drv_data->mask_sr;
         if (irq_status & SSSR_ROR) {
@@ -570,7 +573,7 @@ static irqreturn_t dma_transfer(struct driver_data *drv_data)
 
 static void int_error_stop(struct driver_data *drv_data, const char* msg)
 {
-        void *reg = drv_data->ioaddr;
+        void __iomem *reg = drv_data->ioaddr;
 
         /* Stop and reset SSP */
         write_SSSR(drv_data->clear_sr, reg);
@@ -588,7 +591,7 @@ static void int_error_stop(struct driver_data *drv_data, const char* msg)
 
 static void int_transfer_complete(struct driver_data *drv_data)
 {
-        void *reg = drv_data->ioaddr;
+        void __iomem *reg = drv_data->ioaddr;
 
         /* Stop SSP */
         write_SSSR(drv_data->clear_sr, reg);
@@ -614,7 +617,7 @@ static void int_transfer_complete(struct driver_data *drv_data)
 
 static irqreturn_t interrupt_transfer(struct driver_data *drv_data)
 {
-        void *reg = drv_data->ioaddr;
+        void __iomem *reg = drv_data->ioaddr;
 
         u32 irq_mask = (read_SSCR1(reg) & SSCR1_TIE) ?
                         drv_data->mask_sr : drv_data->mask_sr & ~SSSR_TFS;
@@ -675,7 +678,7 @@ static irqreturn_t interrupt_transfer(struct driver_data *drv_data)
 static irqreturn_t ssp_int(int irq, void *dev_id)
 {
         struct driver_data *drv_data = dev_id;
-        void *reg = drv_data->ioaddr;
+        void __iomem *reg = drv_data->ioaddr;
 
         if (!drv_data->cur_msg) {
 
@@ -695,7 +698,8 @@ static irqreturn_t ssp_int(int irq, void *dev_id)
         return drv_data->transfer_handler(drv_data);
 }
 
-int set_dma_burst_and_threshold(struct chip_data *chip, struct spi_device *spi,
+static int set_dma_burst_and_threshold(struct chip_data *chip,
+                                struct spi_device *spi,
                                 u8 bits_per_word, u32 *burst_code,
                                 u32 *threshold)
 {
@@ -809,7 +813,7 @@ static void pump_transfers(unsigned long data)
         struct spi_transfer *previous = NULL;
         struct chip_data *chip = NULL;
         struct ssp_device *ssp = drv_data->ssp;
-        void *reg = drv_data->ioaddr;
+        void __iomem *reg = drv_data->ioaddr;
         u32 clk_div = 0;
         u8 bits = 0;
         u32 speed = 0;
@@ -1338,7 +1342,7 @@ static int __init pxa2xx_spi_probe(struct platform_device *pdev)
         struct device *dev = &pdev->dev;
         struct pxa2xx_spi_master *platform_info;
         struct spi_master *master;
-        struct driver_data *drv_data = 0;
+        struct driver_data *drv_data = NULL;
         struct ssp_device *ssp;
         int status = 0;