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| author | John Ernberg | 2016-01-25 13:27:17 +0100 |
|---|---|---|
| committer | Johan Hovold | 2016-01-25 13:32:53 +0100 |
| commit | 4152b387da81617c80cb2946b2d56e3958906b3e (patch) | |
| tree | 8d6d27cbc7d698bd43278849307eaab7cbe10a0b /fs | |
| parent | USB: mxu11x0: fix memory leak on usb_serial private data (diff) | |
| download | kernel-qcow2-linux-4152b387da81617c80cb2946b2d56e3958906b3e.tar.gz kernel-qcow2-linux-4152b387da81617c80cb2946b2d56e3958906b3e.tar.xz kernel-qcow2-linux-4152b387da81617c80cb2946b2d56e3958906b3e.zip | |
USB: option: fix Cinterion AHxx enumeration
In certain kernel configurations where the cdc_ether and option drivers
are compiled as modules there can occur a race condition in enumeration.
This causes the option driver to enumerate the ethernet(wwan) interface
as usb-serial interfaces.
usb-devices output for the modem:
T: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 5 Spd=480 MxCh= 0
D: Ver= 2.00 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=1e2d ProdID=0055 Rev=00.00
S: Manufacturer=Cinterion
S: Product=AHx
C: #Ifs= 6 Cfg#= 1 Atr=e0 MxPwr=10mA
I: If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
I: If#= 1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
I: If#= 2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
I: If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
I: If#= 4 Alt= 0 #EPs= 1 Cls=02(commc) Sub=06 Prot=00 Driver=cdc_ether
I: If#= 5 Alt= 1 #EPs= 2 Cls=0a(data ) Sub=00 Prot=00 Driver=cdc_ether
Signed-off-by: John Ernberg <john.ernberg@actia.se>
Fixes: 1941138e1c02 ("USB: added support for Cinterion's products...")
Cc: stable <stable@vger.kernel.org> # v3.9: 8ff10bdb14a52
Signed-off-by: Johan Hovold <johan@kernel.org>
Diffstat (limited to 'fs')
0 files changed, 0 insertions, 0 deletions