static int
hwc_tty_write (struct tty_struct *tty,
int from_user,
const unsigned char *buf,
int count)
{
int retval;
if (hwc_tty_data.buf_count > 0) {
hwc_write (0, hwc_tty_data.buf, hwc_tty_data.buf_count);
hwc_tty_data.buf_count = 0;
}
retval = hwc_write (from_user, buf, count);
return retval;
}
static void
hwc_tty_flush_chars (struct tty_struct *tty)
{
unsigned long flags;
spin_lock_irqsave (&hwc_tty_data.lock, flags);
hwc_write (0, hwc_tty_data.buf, hwc_tty_data.buf_count);
hwc_tty_data.buf_count = 0;
spin_unlock_irqrestore (&hwc_tty_data.lock, flags);
}
static void
hwc_tty_put_char (struct tty_struct *tty,
unsigned char ch)
{
unsigned long flags;
spin_lock_irqsave (&hwc_tty_data.lock, flags);
if (hwc_tty_data.buf_count >= HWC_TTY_BUF_SIZE) {
hwc_write (0, hwc_tty_data.buf, hwc_tty_data.buf_count);
hwc_tty_data.buf_count = 0;
}
hwc_tty_data.buf[hwc_tty_data.buf_count] = ch;
hwc_tty_data.buf_count++;
spin_unlock_irqrestore (&hwc_tty_data.lock, flags);
}
void
hwc_console_write (
struct console *console,
const char *message,
unsigned int count)
{
if (console->device (console) != hwc_console.device (&hwc_console)) {
hwc_printk (KERN_WARNING HWC_CON_PRINT_HEADER
"hwc_console_write() called with wrong "
"device number");
return;
}
hwc_write (0, message, count);
}
