runqemu: work without SERIAL_CONSOLES being defined

Not all machine definitions need to have SERIAL_CONSOLES defined, but
runqemu currently will fail with the following script error if not
present:

Traceback (most recent call last):
  File "/builder/meta-arm/poky/scripts/runqemu", line 1604, in main
    config.setup_final()
  File "/builder/meta-arm/poky/scripts/runqemu", line 1446, in setup_final
    self.setup_serial()
  File "/builder/meta-arm/poky/scripts/runqemu", line 1381, in setup_serial
    self.kernel_cmdline_script += ' console=%s' %entry.split(';')[1]
IndexError: list index out of range

To get around this issue, add a sanity check to runqemu to avoid the
parsing of SERIAL_CONSOLES if empty.

(From OE-Core rev: e8359000e765f876c041b6ccabe63f069f83efec)

Signed-off-by: Jon Mason <jdmason@kudzu.us>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/scripts/runqemu b/scripts/runqemu
index 1143509975..d4f0888f8d 100755
--- a/scripts/runqemu
+++ b/scripts/runqemu
@@ -1376,7 +1376,7 @@ class BaseConfig(object):
 
     def setup_serial(self):
         # Setup correct kernel command line for serial
-        if self.serialstdio == True or self.serialconsole == True or self.nographic == True or self.tcpserial_portnum:
+        if self.get('SERIAL_CONSOLES') and (self.serialstdio == True or self.serialconsole == True or self.nographic == True or self.tcpserial_portnum):
             for entry in self.get('SERIAL_CONSOLES').split(' '):
                 self.kernel_cmdline_script += ' console=%s' %entry.split(';')[1]