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| author | Bjørn Mork <bjorn@mork.no> | 2012-10-22 10:56:38 (GMT) |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-10-23 06:40:11 (GMT) |
| commit | bd329e1284bc5fa6adaddd2ee9ca15328749a7a6 (patch) | |
| tree | a061e39f09ebf0526d1e69ae3888e6dfb7e6bd0d /drivers/bus | |
| parent | 9084ccf9f7f96302bdcbd5d7707e3ec8b8e1bf53 (diff) | |
| download | linux-fsl-qoriq-bd329e1284bc5fa6adaddd2ee9ca15328749a7a6.tar.xz | |
net: cdc_ncm: do not bind to NCM compatible MBIM devices
The MBIM specification allows a MBIM device to disguise
itself as NCM for backwards compatibility, using additional
altsettings with different subclass (control) or protocol
(data):
C:* #Ifs= 2 Cfg#= 1 Atr=80 MxPwr=100mA
I: If#= 0 Alt= 0 #EPs= 1 Cls=02(comm.) Sub=0d Prot=00 Driver=cdc_mbim
E: Ad=81(I) Atr=03(Int.) MxPS= 64 Ivl=7ms
I:* If#= 0 Alt= 1 #EPs= 1 Cls=02(comm.) Sub=0e Prot=00 Driver=cdc_mbim
E: Ad=81(I) Atr=03(Int.) MxPS= 64 Ivl=7ms
I: If#= 1 Alt= 0 #EPs= 0 Cls=0a(data ) Sub=00 Prot=01 Driver=cdc_mbim
I: If#= 1 Alt= 1 #EPs= 2 Cls=0a(data ) Sub=00 Prot=01 Driver=cdc_mbim
E: Ad=81(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms
E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms
I:* If#= 1 Alt= 2 #EPs= 2 Cls=0a(data ) Sub=00 Prot=02 Driver=cdc_mbim
E: Ad=81(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms
E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms
If the MBIM driver is enabled then that should have priority
for devices providing such a NCM 1.0 backward compatibility
mode.
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Suarez <gsuarez@smithmicro.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/bus')
0 files changed, 0 insertions, 0 deletions