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2bb70f0a4b
linux/drivers/usb
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Bjørn Mork 2bb70f0a4b USB: serial: option: support dynamic Quectel USB compositions 
The USB composition, defining the set of exported functions, is dynamic
in newer Quectel modems.  Default functions can be disabled and
alternative functions can be enabled instead.  The alternatives
includes class functions using interface pairs, which should be
handled by the respective class drivers.

Active interfaces are numbered consecutively, so static
blacklisting based on interface numbers will fail when the
composition changes.  An example of such an error, where the
option driver has bound to the CDC ECM data interface,
preventing cdc_ether from handling this function:

 T: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 2 Spd=480 MxCh= 0
 D: Ver= 2.00 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs= 1
 P: Vendor=2c7c ProdID=0125 Rev= 3.18
 S: Manufacturer=Quectel
 S: Product=EC25-AF
 C:* #Ifs= 6 Cfg#= 1 Atr=a0 MxPwr=500mA
 A: FirstIf#= 4 IfCount= 2 Cls=02(comm.) Sub=06 Prot=00
 I:* If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
 E: Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
 E: Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
 I:* If#= 1 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
 E: Ad=83(I) Atr=03(Int.) MxPS= 10 Ivl=32ms
 E: Ad=82(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
 E: Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
 I:* If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
 E: Ad=85(I) Atr=03(Int.) MxPS= 10 Ivl=32ms
 E: Ad=84(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
 E: Ad=03(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
 I:* If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
 E: Ad=87(I) Atr=03(Int.) MxPS= 10 Ivl=32ms
 E: Ad=86(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
 E: Ad=04(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
 I:* If#= 4 Alt= 0 #EPs= 1 Cls=02(comm.) Sub=06 Prot=00 Driver=(none)
 E: Ad=89(I) Atr=03(Int.) MxPS= 16 Ivl=32ms
 I:* If#= 5 Alt= 0 #EPs= 0 Cls=0a(data ) Sub=00 Prot=00 Driver=option
 I: If#= 5 Alt= 1 #EPs= 2 Cls=0a(data ) Sub=00 Prot=00 Driver=option
 E: Ad=88(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
 E: Ad=05(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms

Another device with the same id gets correct drivers, since the
interface of the network function happens to be blacklisted by option:

 T: Bus=01 Lev=02 Prnt=02 Port=01 Cnt=01 Dev#= 3 Spd=480 MxCh= 0
 D: Ver= 2.00 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs= 1
 P: Vendor=2c7c ProdID=0125 Rev= 3.18
 S: Manufacturer=Android
 S: Product=Android
 C:* #Ifs= 5 Cfg#= 1 Atr=a0 MxPwr=500mA
 I:* If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
 E: Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
 E: Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
 I:* If#= 1 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
 E: Ad=83(I) Atr=03(Int.) MxPS= 10 Ivl=32ms
 E: Ad=82(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
 E: Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
 I:* If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
 E: Ad=85(I) Atr=03(Int.) MxPS= 10 Ivl=32ms
 E: Ad=84(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
 E: Ad=03(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
 I:* If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
 E: Ad=87(I) Atr=03(Int.) MxPS= 10 Ivl=32ms
 E: Ad=86(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
 E: Ad=04(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
 I:* If#= 4 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=qmi_wwan
 E: Ad=89(I) Atr=03(Int.) MxPS= 8 Ivl=32ms
 E: Ad=88(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
 E: Ad=05(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms

Change rules for EC21, EC25, BG96 and EG95 to match vendor specific
serial functions only, to prevent binding to class functions. Require
2 endpoints on ff/ff/ff functions, avoiding the 3 endpoint QMI/RMNET
network functions.

Cc: AceLan Kao <acelan.kao@canonical.com>
Cc: Sebastian Sjoholm <ssjoholm@mac.com>
Cc: Dan Williams <dcbw@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Johan Hovold <johan@kernel.org>
2020-08-31 08:37:17 +02:00
..
atm usb: Use fallthrough pseudo-keyword 2020-07-10 08:55:17 +02:00
c67x00 Linux 5.8-rc6 2020-07-20 09:41:30 +02:00
cdns3 usb: cdns3: convert to devm_platform_ioremap_resource_byname 2020-07-29 16:49:37 +02:00
chipidea ENDIAN issue fix and one query controller role API is introduced. 2020-07-29 13:57:09 +02:00
class media updates for v5.9-rc1 2020-08-07 13:00:53 -07:00
common usb: common: usb-conn-gpio: Register charger 2020-07-30 08:45:24 +02:00
core USB: Simplify USB ID table match 2020-07-29 16:48:02 +02:00
dwc2 Revert "usb: dwc2: override PHY input signals with usb role switch support" 2020-07-27 15:34:15 +02:00
dwc3 usb: dwc3: convert to devm_platform_ioremap_resource_byname 2020-07-29 16:49:37 +02:00
early usb: early: xhci-dbc: File headers are not good candidates for kerneldoc 2020-07-09 17:19:59 +02:00
gadget USB/Thunderbolt patches for 5.9-rc1 2020-08-05 12:13:10 -07:00
host USB/Thunderbolt patches for 5.9-rc1 2020-08-05 12:13:10 -07:00
image usb: Use fallthrough pseudo-keyword 2020-07-10 08:55:17 +02:00
isp1760 usb: Use fallthrough pseudo-keyword 2020-07-10 08:55:17 +02:00
misc TTY/Serial patches for 5.9-rc1 2020-08-06 14:56:11 -07:00
mon
mtu3 usb: mtu3: simplify mtu3_req_complete() 2020-07-29 16:53:59 +02:00
musb USB/Thunderbolt patches for 5.9-rc1 2020-08-05 12:13:10 -07:00
phy usb: phy: am335x: convert to devm_platform_ioremap_resource_byname 2020-07-29 16:49:37 +02:00
renesas_usbhs usb: Use fallthrough pseudo-keyword 2020-07-10 08:55:17 +02:00
roles
serial USB: serial: option: support dynamic Quectel USB compositions 2020-08-31 08:37:17 +02:00
storage USB/Thunderbolt patches for 5.9-rc1 2020-08-05 12:13:10 -07:00
typec usb: typec: tcpm: Add WARN_ON ensure we are not trying to send 2 VDM packets at the same time 2020-07-29 14:11:05 +02:00
usbip usbip: Use fallthrough pseudo-keyword 2020-07-09 18:06:35 +02:00
Kconfig treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
Makefile
usb-skeleton.c