blackfin: remove build warning

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>

arch/blackfin/cpu/initcode.c

@@ -18,8 +18,6 @@
 #include <asm/mach-common/bits/core.h>
 #include <asm/serial.h>
 
-#define BUG() while (1) asm volatile("emuexcpt;");
-
 #ifndef __ADSPBF60x__
 #include <asm/mach-common/bits/ebiu.h>
 #include <asm/mach-common/bits/pll.h>
@@ -147,8 +145,6 @@ static struct ddr_config ddr_config_table[] = {
 __attribute__((always_inline))
 static inline void serial_init(void)
 {
-	uint32_t uart_base = UART_BASE;
-
 #if defined(__ADSPBF54x__) || defined(__ADSPBF60x__)
 # ifdef BFIN_BOOT_UART_USE_RTS
 #  define BFIN_UART_USE_RTS 1
@@ -156,6 +152,7 @@ static inline void serial_init(void)
 #  define BFIN_UART_USE_RTS 0
 # endif
 	if (BFIN_UART_USE_RTS && CONFIG_BFIN_BOOT_MODE == BFIN_BOOT_UART) {
+		uint32_t uart_base = UART_BASE;
 		size_t i;
 
 		/* force RTS rather than relying on auto RTS */
@@ -195,8 +192,8 @@ static inline void serial_init(void)
 
 #if CONFIG_BFIN_BOOT_MODE != BFIN_BOOT_BYPASS
 	if (BFIN_DEBUG_EARLY_SERIAL) {
-		serial_early_init(uart_base);
-		serial_early_set_baud(uart_base, CONFIG_BAUDRATE);
+		serial_early_init(UART_BASE);
+		serial_early_set_baud(UART_BASE, CONFIG_BAUDRATE);
 	}
 #endif
 }
@@ -547,7 +544,7 @@ maybe_self_refresh(ADI_BOOT_DATA *bs)
 __attribute__((always_inline)) static inline u16
 program_clocks(ADI_BOOT_DATA *bs, bool put_into_srfs)
 {
-	u16 vr_ctl;
+	u16 vr_ctl = 0;
 
 	serial_putc('a');
 
@@ -731,6 +728,8 @@ update_serial_clocks(ADI_BOOT_DATA *bs, uint sdivB, uint divB, uint vcoB)
 
 	serial_putc('a');
 
+	if (BFIN_DEBUG_EARLY_SERIAL ||
+		CONFIG_BFIN_BOOT_MODE == BFIN_BOOT_UART) {
 #ifdef __ADSPBF60x__
 	sdivR = bfin_read_CGU_DIV();
 	sdivR = ((sdivR >> 8) & 0x1f) * ((sdivR >> 5) & 0x7);
@@ -744,6 +743,8 @@ update_serial_clocks(ADI_BOOT_DATA *bs, uint sdivB, uint divB, uint vcoB)
 	divisor = vcoB * sdivR;
 	quotient = early_division(dividend, divisor);
 	serial_early_put_div(quotient - ANOMALY_05000230);
+	}
+
 	serial_putc('c');
 }
 
@@ -913,7 +914,8 @@ check_hibernation(ADI_BOOT_DATA *bs, u16 vr_ctl, bool put_into_srfs)
 			continue;
 
 		serial_putc('z');
-		uint32_t *hibernate_magic = bfin_read32(DPM0_RESTORE4);
+		uint32_t *hibernate_magic =
+			(uint32_t *)bfin_read32(DPM0_RESTORE4);
 		SSYNC(); /* make sure memory controller is done */
 		if (hibernate_magic[0] == 0xDEADBEEF) {
 			serial_putc('c');

arch/blackfin/include/asm/blackfin_local.h

@@ -81,6 +81,8 @@ extern void blackfin_dcache_flush_invalidate_range(const void *, const void *);
 # define NOP_PAD_ANOMALY_05000198
 #endif
 
+#define BFIN_BUG() while (1) asm volatile("emuexcpt;");
+
 #define _bfin_readX(addr, size, asm_size, asm_ext) ({ \
 	u32 __v; \
 	__asm__ __volatile__( \
@@ -111,7 +113,7 @@ extern void blackfin_dcache_flush_invalidate_range(const void *, const void *);
 	sizeof(*(addr)) == 1 ? bfin_read8(addr)  : \
 	sizeof(*(addr)) == 2 ? bfin_read16(addr) : \
 	sizeof(*(addr)) == 4 ? bfin_read32(addr) : \
-	({ BUG(); 0; }); \
+	({ BFIN_BUG(); 0; }); \
 })
 #define bfin_write(addr, val) \
 do { \
@@ -119,7 +121,8 @@ do { \
 	case 1: bfin_write8(addr, val);  break; \
 	case 2: bfin_write16(addr, val); break; \
 	case 4: bfin_write32(addr, val); break; \
-	default: BUG(); \
+	default: \
+		BFIN_BUG(); \
 	} \
 } while (0)