when 'losetup -f' returns '' output,
out.split()[0] will raise IndexError
Fixes: #1094
Change-Id: Iad310d70defc3c8a83c221951f0d3f8e6dc5a8a6
Signed-off-by: Gui Chen <gui.chen@intel.com>
# provide an avaible loop device
rc, out = runner.runtool([losetupcmd, "--find"])
# provide an avaible loop device
rc, out = runner.runtool([losetupcmd, "--find"])
loopdev = out.split()[0]
devinst.register(loopdev)
if not loopdev or not os.path.exists(loopdev):
loopdev = out.split()[0]
devinst.register(loopdev)
if not loopdev or not os.path.exists(loopdev):