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Fix #6156 (Error running Calibre on Xen virtual machine with Ubuntu Lucid 10.04)

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This commit is contained in:
Kovid Goyal 2010-07-12 16:55:01 -06:00
parent 97d3483a56
commit 6a4ff48059
1 changed files with 3 additions and 2 deletions
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5
src/calibre/devices/scanner.py
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@ -98,6 +98,9 @@ class LinuxScanner(object):
def __call__(self):
ans = set([])
if not self.ok:
raise RuntimeError('DeviceScanner requires the /sys filesystem to work.')
for x in os.listdir(self.base):
base = os.path.join(self.base, x)
ven = os.path.join(base, 'idVendor')
@ -145,8 +148,6 @@ class DeviceScanner(object):
def __init__(self, *args):
if isosx and osx_scanner is None:
raise RuntimeError('The Python extension usbobserver must be available on OS X.')
if islinux and not linux_scanner.ok:
raise RuntimeError('DeviceScanner requires the /sys filesystem to work.')
self.scanner = win_scanner if iswindows else osx_scanner if isosx else linux_scanner
self.devices = []