diff options
| author | Bjørn Mork <bjorn@mork.no> | 2012-01-20 01:49:57 +0100 |
|---|---|---|
| committer | Simone Willett <swillett@nvidia.com> | 2012-02-08 14:30:29 -0800 |
| commit | 2a87f9cf0e848f130f1620831c4eccfd51ae5d94 (patch) | |
| tree | bf9a62fbe60c9678cef7edc8949b3f8d88198c1f /net | |
| parent | 4fe22be3084aeac7c823b5b26de84a8085ecca95 (diff) | |
USB: cdc-wdm: Avoid hanging on interface with no USB_CDC_DMM_TYPE
commit 15699e6fafc3a90e5fdc2ef30555a04dee62286f upstream.
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 <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Change-Id: Ie2ff55501d19fe5273dd0485e23b1dc28cbd4d2c
Reviewed-on: http://git-master/r/79688
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Simone Willett <swillett@nvidia.com>
Tested-by: Simone Willett <swillett@nvidia.com>
Diffstat (limited to 'net')
0 files changed, 0 insertions, 0 deletions