From: Bjørn Mork Date: Fri, 20 Jan 2012 00:49:57 +0000 (+0100) Subject: USB: cdc-wdm: Avoid hanging on interface with no USB_CDC_DMM_TYPE X-Git-Tag: v3.4-rc1~184^2~22^2~121^2~21 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7e3054a005537f28544ab2870c375458362f7473;p=pandora-kernel.git USB: cdc-wdm: Avoid hanging on interface with no USB_CDC_DMM_TYPE The probe does not strictly require the USB_CDC_DMM_TYPE descriptor, which is a good thing as it makes the driver usable on non-conforming interfaces. A user could e.g. bind to it to a CDC ECM interface by using the new_id and bind sysfs files. But this would fail with a 0 buffer length due to the missing descriptor. Fix by defining a reasonable fallback size: The minimum device receive buffer size required by the CDC WMC standard, revision 1.1 Signed-off-by: Bjørn Mork Signed-off-by: Greg Kroah-Hartman --- Reading git-diff-tree failed