[POWERPC] cpm_uart: sparse fixes

Mostly a bunch of direct access to in/out conversions, plus a few
cast removals, __iomem annotations, and miscellaneous cleanup.
Signed-off-by: NScott Wood <scottwood@freescale.com>
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>

drivers/serial/cpm_uart/cpm_uart.h

@@ -56,21 +56,21 @@ struct uart_cpm_port {
 	u16			rx_fifosize;
 	u16			tx_nrfifos;
 	u16			tx_fifosize;
-	smc_t			*smcp;
-	smc_uart_t		*smcup;
-	scc_t			*sccp;
-	scc_uart_t		*sccup;
-	volatile cbd_t		*rx_bd_base;
-	volatile cbd_t		*rx_cur;
-	volatile cbd_t		*tx_bd_base;
-	volatile cbd_t		*tx_cur;
+	smc_t __iomem		*smcp;
+	smc_uart_t __iomem	*smcup;
+	scc_t __iomem		*sccp;
+	scc_uart_t __iomem	*sccup;
+	cbd_t __iomem		*rx_bd_base;
+	cbd_t __iomem		*rx_cur;
+	cbd_t __iomem		*tx_bd_base;
+	cbd_t __iomem		*tx_cur;
 	unsigned char		*tx_buf;
 	unsigned char		*rx_buf;
 	u32			flags;
 	void			(*set_lineif)(struct uart_cpm_port *);
 	u8			brg;
 	uint			 dp_addr;
-	void			*mem_addr;
+	void 			*mem_addr;
 	dma_addr_t		 dma_addr;
 	u32			mem_size;
 	/* helpers */
@@ -106,34 +106,36 @@ void scc4_lineif(struct uart_cpm_port *pinfo);
 /*
    virtual to phys transtalion
 */
-static inline unsigned long cpu2cpm_addr(void* addr, struct uart_cpm_port *pinfo)
+static inline unsigned long cpu2cpm_addr(void *addr,
+                                         struct uart_cpm_port *pinfo)
 {
 	int offset;
 	u32 val = (u32)addr;
+	u32 mem = (u32)pinfo->mem_addr;
 	/* sane check */
-	if (likely((val >= (u32)pinfo->mem_addr)) &&
-			(val<((u32)pinfo->mem_addr + pinfo->mem_size))) {
-		offset = val - (u32)pinfo->mem_addr;
-		return pinfo->dma_addr+offset;
+	if (likely(val >= mem && val < mem + pinfo->mem_size)) {
+		offset = val - mem;
+		return pinfo->dma_addr + offset;
 	}
 	/* something nasty happened */
 	BUG();
 	return 0;
 }
 
-static inline void *cpm2cpu_addr(unsigned long addr, struct uart_cpm_port *pinfo)
+static inline void *cpm2cpu_addr(unsigned long addr,
+                                 struct uart_cpm_port *pinfo)
 {
 	int offset;
 	u32 val = addr;
+	u32 dma = (u32)pinfo->dma_addr;
 	/* sane check */
-	if (likely((val >= pinfo->dma_addr) &&
-			(val<(pinfo->dma_addr + pinfo->mem_size)))) {
-		offset = val - (u32)pinfo->dma_addr;
-		return (void*)(pinfo->mem_addr+offset);
+	if (likely(val >= dma && val < dma + pinfo->mem_size)) {
+		offset = val - dma;
+		return pinfo->mem_addr + offset;
 	}
 	/* something nasty happened */
 	BUG();
-	return 0;
+	return NULL;
 }
 
 

drivers/serial/cpm_uart/cpm_uart_cpm1.c

@@ -179,7 +179,7 @@ int cpm_uart_allocbuf(struct uart_cpm_port *pinfo, unsigned int is_con)
 	pinfo->tx_buf = pinfo->rx_buf + L1_CACHE_ALIGN(pinfo->rx_nrfifos
 						       * pinfo->rx_fifosize);
 
-	pinfo->rx_bd_base = (volatile cbd_t *)dp_mem;
+	pinfo->rx_bd_base = (cbd_t __iomem __force *)dp_mem;
 	pinfo->tx_bd_base = pinfo->rx_bd_base + pinfo->rx_nrfifos;
 
 	return 0;

drivers/serial/cpm_uart/cpm_uart_cpm1.h

@@ -27,18 +27,18 @@ static inline void cpm_set_brg(int brg, int baud)
 	cpm_setbrg(brg, baud);
 }
 
-static inline void cpm_set_scc_fcr(volatile scc_uart_t * sup)
+static inline void cpm_set_scc_fcr(scc_uart_t __iomem * sup)
 {
-	sup->scc_genscc.scc_rfcr = SMC_EB;
-	sup->scc_genscc.scc_tfcr = SMC_EB;
+	out_8(&sup->scc_genscc.scc_rfcr, SMC_EB);
+	out_8(&sup->scc_genscc.scc_tfcr, SMC_EB);
 }
 
-static inline void cpm_set_smc_fcr(volatile smc_uart_t * up)
+static inline void cpm_set_smc_fcr(smc_uart_t __iomem * up)
 {
-	up->smc_rfcr = SMC_EB;
-	up->smc_tfcr = SMC_EB;
+	out_8(&up->smc_rfcr, SMC_EB);
+	out_8(&up->smc_tfcr, SMC_EB);
 }
 
-#define DPRAM_BASE	((unsigned char *)cpm_dpram_addr(0))
+#define DPRAM_BASE	((u8 __iomem __force *)cpm_dpram_addr(0))
 
 #endif

drivers/serial/cpm_uart/cpm_uart_cpm2.c

@@ -278,7 +278,7 @@ int cpm_uart_allocbuf(struct uart_cpm_port *pinfo, unsigned int is_con)
 	pinfo->tx_buf = pinfo->rx_buf + L1_CACHE_ALIGN(pinfo->rx_nrfifos
 						       * pinfo->rx_fifosize);
 
-	pinfo->rx_bd_base = (volatile cbd_t *)dp_mem;
+	pinfo->rx_bd_base = (cbd_t __iomem __force *)dp_mem;
 	pinfo->tx_bd_base = pinfo->rx_bd_base + pinfo->rx_nrfifos;
 
 	return 0;
@@ -289,7 +289,7 @@ void cpm_uart_freebuf(struct uart_cpm_port *pinfo)
 	dma_free_coherent(NULL, L1_CACHE_ALIGN(pinfo->rx_nrfifos *
 					       pinfo->rx_fifosize) +
 			  L1_CACHE_ALIGN(pinfo->tx_nrfifos *
-					 pinfo->tx_fifosize), pinfo->mem_addr,
+					 pinfo->tx_fifosize), (void __force *)pinfo->mem_addr,
 			  pinfo->dma_addr);
 
 	cpm_dpfree(pinfo->dp_addr);

drivers/serial/cpm_uart/cpm_uart_cpm2.h

@@ -27,18 +27,18 @@ static inline void cpm_set_brg(int brg, int baud)
 	cpm_setbrg(brg, baud);
 }
 
-static inline void cpm_set_scc_fcr(volatile scc_uart_t * sup)
+static inline void cpm_set_scc_fcr(scc_uart_t __iomem *sup)
 {
-	sup->scc_genscc.scc_rfcr = CPMFCR_GBL | CPMFCR_EB;
-	sup->scc_genscc.scc_tfcr = CPMFCR_GBL | CPMFCR_EB;
+	out_8(&sup->scc_genscc.scc_rfcr, CPMFCR_GBL | CPMFCR_EB);
+	out_8(&sup->scc_genscc.scc_tfcr, CPMFCR_GBL | CPMFCR_EB);
 }
 
-static inline void cpm_set_smc_fcr(volatile smc_uart_t * up)
+static inline void cpm_set_smc_fcr(smc_uart_t __iomem *up)
 {
-	up->smc_rfcr = CPMFCR_GBL | CPMFCR_EB;
-	up->smc_tfcr = CPMFCR_GBL | CPMFCR_EB;
+	out_8(&up->smc_rfcr, CPMFCR_GBL | CPMFCR_EB);
+	out_8(&up->smc_tfcr, CPMFCR_GBL | CPMFCR_EB);
 }
 
-#define DPRAM_BASE	((unsigned char *)cpm_dpram_addr(0))
+#define DPRAM_BASE	((u8 __iomem __force *)cpm_dpram_addr(0))
 
 #endif