Make code ANSI C compatible

1 files changed, 15 insertions, 14 deletions

diff --git a/devices/uart/uart_16550.c b/devices/uart/uart_16550.c
index 47a7fd3..0e19842 100644
--- a/devices/uart/uart_16550.c
+++ b/devices/uart/uart_16550.c
@@ -22,6 +22,7 @@ uart_putc(const FILE *self, char a)
 int
 uart_puts(const FILE *self, const char *string, int length)
 {
+  int i;
   int written = 0;
 
   if (length == -1)
@@ -32,7 +33,7 @@ uart_puts(const FILE *self, const char *string, int length)
     }
 
   else
-    for (int i = 0; i < length; ++i) {
+    for (i = 0; i < length; ++i) {
       uart_putc(self, string[i]);
       ++written;
     }
@@ -50,22 +51,22 @@ FILE uart_stream;
 FILE *
 uart_init(enum UART port)
 {
-  outb(0x00, port + 1); // Disable all interrupts
-  outb(0x80, port + 3); // Enable DLAB (set baud rate divisor)
-  outb(0x03, port + 0); // Set divisor to 3 (lo byte) 38400 baud
-  outb(0x00, port + 1); //                  (hi byte)
-  outb(0x03, port + 3); // 8 bits, no parity, one stop bit
-  outb(0xc7, port + 2); // Enable FIFO, clear them, with 14-byte threshold
-  outb(0x0b, port + 4); // IRQs enabled, RTS/DSR set
-  outb(0x1e, port + 4); // Set in loopback mode, test the serial chip
-  outb(0xae, port + 0); // Test serial chip (send byte 0xAE and check if serial
-                        // returns same byte)
+  outb(0x00, port + 1); /* Disable all interrupts */
+  outb(0x80, port + 3); /* Enable DLAB (set baud rate divisor) */
+  outb(0x03, port + 0); /* Set divisor to 3 (lo byte) 38400 baud */
+  outb(0x00, port + 1); /*                  (hi byte) */
+  outb(0x03, port + 3); /* 8 bits, no parity, one stop bit */
+  outb(0xc7, port + 2); /* Enable FIFO, clear them, with 14-byte threshold */
+  outb(0x0b, port + 4); /* IRQs enabled, RTS/DSR set */
+  outb(0x1e, port + 4); /* Set in loopback mode, test the serial chip */
+  outb(0xae, port + 0); /* Test serial chip (send byte 0xAE and check if serial */
+                        /* returns same byte) */
 
-  // Check if serial is faulty (i.e: not same byte as sent)
+  /* Check if serial is faulty (i.e: not same byte as sent) */
   if (inb(port + 0) != 0xae) { return NULL; }
 
-  // If serial is not faulty set it in normal operation mode
-  // (not-loopback with IRQs enabled and OUT#1 and OUT#2 bits enabled)
+  /* If serial is not faulty set it in normal operation mode */
+  /* (not-loopback with IRQs enabled and OUT#1 and OUT#2 bits enabled) */
   outb(0x0f, port + 4);
   uart_stream.id = port;
   uart_stream.putc = &uart_putc;