Blackfin arch: update kgdb patch

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

2 files changed, 26 insertions, 17 deletions

diff --git a/drivers/serial/bfin_5xx.c b/drivers/serial/bfin_5xx.c
index 5039e2675abc..3f39e1814693 100644
--- a/drivers/serial/bfin_5xx.c
+++ b/drivers/serial/bfin_5xx.c
@@ -86,10 +86,8 @@ static void bfin_serial_stop_tx(struct uart_port *port)
 {
         struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
 
-#ifdef CONFIG_BF54x
         while (!(UART_GET_LSR(uart) & TEMT))
                 continue;
-#endif
 
 #ifdef CONFIG_SERIAL_BFIN_DMA
         disable_dma(uart->tx_dma_channel);
@@ -128,8 +126,8 @@ static void bfin_serial_start_tx(struct uart_port *port)
         ier = UART_GET_IER(uart);
         ier |= ETBEI;
         UART_PUT_IER(uart, ier);
-        bfin_serial_tx_chars(uart);
 #endif
+        bfin_serial_tx_chars(uart);
 #endif
 }
 
@@ -139,18 +137,21 @@ static void bfin_serial_start_tx(struct uart_port *port)
 static void bfin_serial_stop_rx(struct uart_port *port)
 {
         struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
+#ifdef  CONFIG_KGDB_UART
+        if (uart->port.line != CONFIG_KGDB_UART_PORT) {
+#endif
 #ifdef CONFIG_BF54x
         UART_CLEAR_IER(uart, ERBFI);
 #else
         unsigned short ier;
 
         ier = UART_GET_IER(uart);
-#ifdef  CONFIG_KGDB_UART
-        if (uart->port.line != CONFIG_KGDB_UART_PORT)
-#endif
         ier &= ~ERBFI;
         UART_PUT_IER(uart, ier);
 #endif
+#ifdef  CONFIG_KGDB_UART
+        }
+#endif
 }
 
 /*
@@ -175,8 +176,11 @@ void kgdb_put_debug_char(int chr)
         while (!(UART_GET_LSR(uart) & THRE)) {
                 SSYNC();
         }
+
+#ifndef CONFIG_BF54x
         UART_PUT_LCR(uart, UART_GET_LCR(uart)&(~DLAB));
         SSYNC();
+#endif
         UART_PUT_CHAR(uart, (unsigned char)chr);
         SSYNC();
 }
@@ -194,8 +198,10 @@ int kgdb_get_debug_char(void)
         while(!(UART_GET_LSR(uart) & DR)) {
                 SSYNC();
         }
+#ifndef CONFIG_BF54x
         UART_PUT_LCR(uart, UART_GET_LCR(uart)&(~DLAB));
         SSYNC();
+#endif
         chr = UART_GET_CHAR(uart);
         SSYNC();
 
@@ -697,17 +703,19 @@ static int bfin_serial_startup(struct uart_port *port)
         uart->rx_dma_timer.expires = jiffies + DMA_RX_FLUSH_JIFFIES;
         add_timer(&(uart->rx_dma_timer));
 #else
+        if (request_irq(uart->port.irq, bfin_serial_rx_int, IRQF_DISABLED,
+             "BFIN_UART_RX", uart)) {
 # ifdef CONFIG_KGDB_UART
-        if (uart->port.line != CONFIG_KGDB_UART_PORT && request_irq
-# else
-        if (request_irq
+                if (uart->port.line != CONFIG_KGDB_UART_PORT) {
 # endif
-            (uart->port.irq, bfin_serial_rx_int, IRQF_DISABLED,
-             "BFIN_UART_RX", uart)) {
                 printk(KERN_NOTICE "Unable to attach BlackFin UART RX interrupt\n");
                 return -EBUSY;
+# ifdef CONFIG_KGDB_UART
+                }
+# endif
         }
 
+
         if (request_irq
             (uart->port.irq+1, bfin_serial_tx_int, IRQF_DISABLED,
              "BFIN_UART_TX", uart)) {
@@ -1154,10 +1162,6 @@ struct console __init *bfin_earlyserial_init(unsigned int port,
                 port = 0;
         bfin_serial_init_ports();
         bfin_early_serial_console.index = port;
-#ifdef CONFIG_KGDB_UART
-        kgdb_entry_state = 0;
-        init_kgdb_uart();
-#endif
         uart = &bfin_serial_ports[port];
         t.c_cflag = cflag;
         t.c_iflag = 0;
@@ -1255,7 +1259,7 @@ static int __init bfin_serial_init(void)
         int ret;
 #ifdef CONFIG_KGDB_UART
         struct bfin_serial_port *uart = &bfin_serial_ports[CONFIG_KGDB_UART_PORT];
-        struct termios t;
+        struct ktermios t;
 #endif
 
         pr_info("Serial: Blackfin serial driver\n");
@@ -1272,10 +1276,14 @@ static int __init bfin_serial_init(void)
         }
 #ifdef CONFIG_KGDB_UART
         if (uart->port.cons->index != CONFIG_KGDB_UART_PORT) {
-                request_irq(uart->port.irq, bfin_serial_int,
+                request_irq(uart->port.irq, bfin_serial_rx_int,
                         IRQF_DISABLED, "BFIN_UART_RX", uart);
                 pr_info("Request irq for kgdb uart port\n");
+#ifdef CONFIG_BF54x
+                UART_SET_IER(uart, ERBFI);
+#else
                 UART_PUT_IER(uart, UART_GET_IER(uart) | ERBFI);
+#endif
                 SSYNC();
                 t.c_cflag = CS8|B57600;
                 t.c_iflag = 0;
diff --git a/include/asm-blackfin/kgdb.h b/include/asm-blackfin/kgdb.h
index 532bd9052004..0f73847fd6bc 100644
--- a/include/asm-blackfin/kgdb.h
+++ b/include/asm-blackfin/kgdb.h
@@ -179,5 +179,6 @@ enum regnames {
 #define STATDA1         0x80
 
 extern void kgdb_print(const char *fmt, ...);
+extern void init_kgdb_uart(void);
 
 #endif