Merge tag 'ntb-3.13' of git://github.com/jonmason/ntb

[karo-tx-linux.git] / drivers / tty / hvc / hvc_xen.c

diff --git a/drivers/tty/hvc/hvc_xen.c b/drivers/tty/hvc/hvc_xen.c
index c193af6a628f45758a7fcd59b1b0823e57327655..636c9baad7a58b76fc740bd49794303cfcc472ef 100644 (file)
--- a/drivers/tty/hvc/hvc_xen.c
+++ b/drivers/tty/hvc/hvc_xen.c
@@ -183,7 +183,7 @@ static int dom0_write_console(uint32_t vtermno, const char *str, int len)
 {
        int rc = HYPERVISOR_console_io(CONSOLEIO_write, len, (char *)str);
        if (rc < 0)
-               return 0;
+               return rc;
 
        return len;
 }
@@ -642,7 +642,22 @@ struct console xenboot_console = {
 
 void xen_raw_console_write(const char *str)
 {
-       dom0_write_console(0, str, strlen(str));
+       ssize_t len = strlen(str);
+       int rc = 0;
+
+       if (xen_domain()) {
+               rc = dom0_write_console(0, str, len);
+#ifdef CONFIG_X86
+               if (rc == -ENOSYS && xen_hvm_domain())
+                       goto outb_print;
+
+       } else if (xen_cpuid_base()) {
+               int i;
+outb_print:
+               for (i = 0; i < len; i++)
+                       outb(str[i], 0xe9);
+#endif
+       }
 }
 
 void xen_raw_printk(const char *fmt, ...)