rtl8195am - fix log_uart_api.c warnings

Fix the following warnings:

[Warning] log_uart_api.c@58,38: comparison between signed and unsigned integer expressions [-Wsign-compare]
[Warning] log_uart_api.c@151,38: comparison between signed and unsigned integer expressions [-Wsign-compare]
[Warning] log_uart_api.c@260,27: unused variable 'pUartAdapter' [-Wunused-variable]
[Warning] log_uart_api.c@268,27: unused variable 'pUartAdapter' [-Wunused-variable]
[Warning] log_uart_api.c@276,27: unused variable 'pUartAdapter' [-Wunused-variable]
[Warning] log_uart_api.c@290,27: unused variable 'pUartAdapter' [-Wunused-variable]
[Warning] log_uart_api.c@328,27: unused variable 'pUartAdapter' [-Wunused-variable]
[Warning] log_uart_api.c@338,27: unused variable 'pUartAdapter' [-Wunused-variable]
[Warning] log_uart_api.c@376,45: pointer targets in passing argument 2 of 'HalLogUartRecv' differ in signedness [-Wpointer-sign]
[Warning] log_uart_api.c@386,45: pointer targets in passing argument 2 of 'HalLogUartSend' differ in signedness [-Wpointer-sign]

Signed-off-by: Tony Wu <[email protected]>

Author: tung7970

targets/TARGET_Realtek/TARGET_AMEBA/TARGET_RTL8195A/log_uart_api.c

@@ -55,7 +55,7 @@ int32_t log_uart_init (log_uart_t *obj, int baudrate, int data_bits, SerialParit
     pUartAdapter = &obj->log_hal_uart;
     // Check Baud rate
     for (i=0; log_uart_support_rate[i]!=0xFFFFFF; i++) {
-        if (log_uart_support_rate[i] == baudrate) {
+        if (log_uart_support_rate[i] == (u32)baudrate) {
             break;
         }
     }    
@@ -148,7 +148,7 @@ void log_uart_baud(log_uart_t *obj, int baudrate)
     pUartAdapter = &obj->log_hal_uart;
     // Check Baud rate
     for (i=0; log_uart_support_rate[i]!=0xFFFFFFFF; i++) {
-        if (log_uart_support_rate[i] == baudrate) {
+        if (log_uart_support_rate[i] == (u32)baudrate) {
             break;
         }
     }
@@ -257,23 +257,18 @@ void log_uart_irq_set(log_uart_t *obj, LOG_UART_INT_ID irq, uint32_t enable)
 
 char log_uart_getc(log_uart_t *obj) 
 {
-    HAL_LOG_UART_ADAPTER *pUartAdapter=(PHAL_LOG_UART_ADAPTER)&(obj->log_hal_uart);
-
     while (!log_uart_readable(obj));
     return (char)(HAL_UART_READ32(UART_REV_BUF_OFF) & 0xFF);
 }
 
 void log_uart_putc(log_uart_t *obj, char c) 
 {
-    HAL_LOG_UART_ADAPTER *pUartAdapter=(PHAL_LOG_UART_ADAPTER)&(obj->log_hal_uart);
-    
     while (!log_uart_writable(obj));
     HAL_UART_WRITE8(UART_TRAN_HOLD_OFF, c);
 }
 
 int log_uart_readable(log_uart_t *obj) 
 {
-    HAL_LOG_UART_ADAPTER *pUartAdapter=(PHAL_LOG_UART_ADAPTER)&(obj->log_hal_uart);
     volatile u8 line_status;
 
     line_status = HAL_UART_READ8(UART_LINE_STATUS_REG_OFF);
@@ -287,7 +282,6 @@ int log_uart_readable(log_uart_t *obj)
 
 int log_uart_writable(log_uart_t *obj) 
 {
-    HAL_LOG_UART_ADAPTER *pUartAdapter=(PHAL_LOG_UART_ADAPTER)&(obj->log_hal_uart);
     volatile u8 line_status;
 
     line_status = HAL_UART_READ8(UART_LINE_STATUS_REG_OFF);
@@ -325,7 +319,6 @@ void log_uart_clear_rx(log_uart_t *obj)
 
 void log_uart_break_set(log_uart_t *obj) 
 {
-    HAL_LOG_UART_ADAPTER *pUartAdapter=(PHAL_LOG_UART_ADAPTER)&(obj->log_hal_uart);
     u32 RegValue;
 
     RegValue = HAL_UART_READ32(UART_LINE_CTL_REG_OFF);
@@ -335,7 +328,6 @@ void log_uart_break_set(log_uart_t *obj)
 
 void log_uart_break_clear(log_uart_t *obj) 
 {
-    HAL_LOG_UART_ADAPTER *pUartAdapter=(PHAL_LOG_UART_ADAPTER)&(obj->log_hal_uart);
     u32 RegValue;
 
     RegValue = HAL_UART_READ32(UART_LINE_CTL_REG_OFF);
@@ -371,20 +363,16 @@ void log_uart_line_status_handler(log_uart_t *obj, void *handler, uint32_t id)
 int32_t log_uart_recv (log_uart_t *obj, char *prxbuf, uint32_t len, uint32_t timeout_ms)
 {
     HAL_LOG_UART_ADAPTER *pUartAdapter=&(obj->log_hal_uart);
-    int ret;
 
-    ret = (int)HalLogUartRecv(pUartAdapter, prxbuf, len, timeout_ms);
-    return (ret);
+    return (int32_t)HalLogUartRecv(pUartAdapter, (u8 *)prxbuf, len, timeout_ms);
 }
 
 // Blocked(busy wait) send, return transmitted bytes count
 int32_t log_uart_send (log_uart_t *obj, char *ptxbuf, uint32_t len, uint32_t timeout_ms)
 {
     HAL_LOG_UART_ADAPTER *pUartAdapter=&(obj->log_hal_uart);
-    int ret;
 
-    ret = (int)HalLogUartSend(pUartAdapter, ptxbuf, len, timeout_ms);
-    return (ret);
+    return (int32_t)HalLogUartSend(pUartAdapter, (u8 *)ptxbuf, len, timeout_ms);
 }
 
 // Interrupt mode(no wait) receive, return HAL function result