ui/crumbs/hig.py: fix run time error

Commit 094742bed2fc01d55f572da946fcfa7a48521401 re-implement the
function popen_read(). If there is no USB device, it crashes with
"ExecutionError: Execution of 'ls /dev/disk/by-id/usb*' failed with exit
code 2:"

Replace popen_read() way with glob module to get the USB devices.

(Bitbake rev: 0c43fe72e3c6a12ac19173d8cbbad81af21c2d85)

Signed-off-by: Kang Kai <kai.kang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/bitbake/lib/bb/ui/crumbs/hig.py b/bitbake/lib/bb/ui/crumbs/hig.py
index f64f1be46c..3ca838279d 100644
--- a/bitbake/lib/bb/ui/crumbs/hig.py
+++ b/bitbake/lib/bb/ui/crumbs/hig.py
@@ -20,6 +20,7 @@
 # with this program; if not, write to the Free Software Foundation, Inc.,
 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
+import glob
 import gtk
 import gobject
 import hashlib
@@ -806,7 +807,7 @@ class DeployImageDialog (CrumbsDialog):
 
     def find_all_usb_devices(self):
         usb_devs = [ os.readlink(u)
-            for u in self.popen_read('ls /dev/disk/by-id/usb*').split()
+            for u in glob.glob('/dev/disk/by-id/usb*')
             if not re.search(r'part\d+', u) ]
         return [ '%s' % u[u.rfind('/')+1:] for u in usb_devs ]