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Date: Thu, 7 Jan 2016 08:52:38 +0000
From: John Ernberg <john.ernberg@...ia.se>
To: Johan Hovold <johan@...nel.org>
CC: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>
Subject: Re: [PATCH] usb: option.c: Fix Cinterion AHxx enumeration.
Hi Johan,
Apologies for the late reply, I was out of office.
Below is the 'lsusb -v' output for the AH3 modem.
For the mailing lists: Please CC me directly, I did not sign up for the mailing lists. Thank you.
Best regards // John Ernberg
Bus 001 Device 002: ID 1e2d:0055
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 239 Miscellaneous Device
bDeviceSubClass 2 ?
bDeviceProtocol 1 Interface Association
bMaxPacketSize0 64
idVendor 0x1e2d
idProduct 0x0055
bcdDevice 0.00
iManufacturer 4 Cinterion
iProduct 3 AHx
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 187
bNumInterfaces 6
bConfigurationValue 1
iConfiguration 2 Qualcomm Configuration
bmAttributes 0xe0
Self Powered
Remote Wakeup
MaxPower 10mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 255 Vendor Specific Subclass
bInterfaceProtocol 255 Vendor Specific Protocol
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 32
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 32
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 255 Vendor Specific Subclass
bInterfaceProtocol 255 Vendor Specific Protocol
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 32
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 32
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 2
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 255 Vendor Specific Subclass
bInterfaceProtocol 255 Vendor Specific Protocol
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 32
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x03 EP 3 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 32
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 3
bAlternateSetting 0
bNumEndpoints 3
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 255 Vendor Specific Subclass
bInterfaceProtocol 255 Vendor Specific Protocol
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x84 EP 4 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 5
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x85 EP 5 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 32
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x04 EP 4 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 32
Interface Association:
bLength 8
bDescriptorType 11
bFirstInterface 4
bInterfaceCount 2
bFunctionClass 2 Communications
bFunctionSubClass 0
bFunctionProtocol 0
iFunction 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 4
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 2 Communications
bInterfaceSubClass 6 Ethernet Networking
bInterfaceProtocol 0
iInterface 0
CDC Header:
bcdCDC 1.10
CDC Ethernet:
iMacAddress 1 00A0C6294080
bmEthernetStatistics 0x00000000
wMaxSegmentSize 8192
wNumberMCFilters 0x0001
bNumberPowerFilters 0
CDC Union:
bMasterInterface 4
bSlaveInterface 5
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x86 EP 6 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 5
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 5
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 10 CDC Data
bInterfaceSubClass 0 Unused
bInterfaceProtocol 0
iInterface 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 5
bAlternateSetting 1
bNumEndpoints 2
bInterfaceClass 10 CDC Data
bInterfaceSubClass 0 Unused
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x87 EP 7 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 32
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x05 EP 5 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 32
Device Qualifier (for other device speed):
bLength 10
bDescriptorType 6
bcdUSB 2.00
bDeviceClass 239 Miscellaneous Device
bDeviceSubClass 2 ?
bDeviceProtocol 1 Interface Association
bMaxPacketSize0 64
bNumConfigurations 1
Device Status: 0x0000
(Bus Powered)
On 12/22/2015 07:49 PM, Johan Hovold wrote:
> [ +CC: linux-usb ]
>
> On Tue, Dec 22, 2015 at 10:51:32AM +0000, John Ernberg wrote:
>> From: John Ernberg <john.ernberg@...ia.se>
>>
>> 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.
>>
>> In dmesg it may look like this:
>> [ 18.380585] usb 1-1: new high-speed USB device number 2 using ci_hdrc
>> [ 18.592290] usbcore: registered new interface driver usbserial
>> [ 18.606636] usbcore: registered new interface driver usbserial_generic
>> [ 18.614815] usbserial: USB Serial support registered for generic
>> [ 18.652111] usbcore: registered new interface driver option
>> [ 18.659745] usbserial: USB Serial support registered for GSM modem (1-port)
>> [ 18.667600] option 1-1:1.0: GSM modem (1-port) converter detected
>> [ 18.676906] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB0
>> [ 18.686725] cdc_ether 1-1:1.4 wwan0: register 'cdc_ether' at usb-ci_hdrc.1-1, Mobile Broadband Network Device
>> [ 18.705587] option 1-1:1.1: GSM modem (1-port) converter detected
>> [ 18.713468] usbcore: registered new interface driver cdc_ether
>> [ 18.719930] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB1
>> [ 18.729770] option 1-1:1.2: GSM modem (1-port) converter detected
>> [ 18.737421] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB2
>> [ 18.745232] option 1-1:1.3: GSM modem (1-port) converter detected
>> [ 18.752838] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB3
>> [ 43.422579] option1 ttyUSB3: option_instat_callback: error -71
>> [ 43.622575] option1 ttyUSB3: option_instat_callback: error -71
>> [ 43.822579] option1 ttyUSB3: option_instat_callback: error -71
>> [ 44.022575] option1 ttyUSB3: option_instat_callback: error -71
>> [ 44.222569] option1 ttyUSB3: option_instat_callback: error -71
>> [ 44.398490] usb 1-1: USB disconnect, device number 2
>> [ 44.405414] option1 ttyUSB0: GSM modem (1-port) converter now disconnected from ttyUSB0
>> [ 44.417200] option 1-1:1.0: device disconnected
>> [ 44.424903] option1 ttyUSB1: GSM modem (1-port) converter now disconnected from ttyUSB1
>> [ 44.434249] option 1-1:1.1: device disconnected
>> [ 44.438824] option1 ttyUSB3: option_instat_callback: error -71
>> [ 44.448436] option1 ttyUSB2: GSM modem (1-port) converter now disconnected from ttyUSB2
>> [ 44.457736] option 1-1:1.2: device disconnected
>> [ 44.465204] option1 ttyUSB3: GSM modem (1-port) converter now disconnected from ttyUSB3
>> [ 44.474480] option 1-1:1.3: device disconnected
>> [ 44.479754] cdc_ether 1-1:1.4 wwan0: unregister 'cdc_ether' usb-ci_hdrc.1-1, Mobile Broadband Network Device
>> [ 48.960593] usb 1-1: new high-speed USB device number 3 using ci_hdrc
>> [ 49.116118] option 1-1:1.0: GSM modem (1-port) converter detected
>> [ 49.123853] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB0
>> [ 49.132029] option 1-1:1.1: GSM modem (1-port) converter detected
>> [ 49.138778] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB1
>> [ 49.147432] option 1-1:1.2: GSM modem (1-port) converter detected
>> [ 49.154924] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB2
>> [ 49.162940] option 1-1:1.3: GSM modem (1-port) converter detected
>> [ 49.169724] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB3
>> [ 49.178440] option 1-1:1.4: GSM modem (1-port) converter detected
>> [ 49.185979] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB4
>> [ 49.193985] option 1-1:1.5: GSM modem (1-port) converter detected
>> [ 49.201458] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB5
>> ---
>> drivers/usb/serial/option.c | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
>> index f228060..4e483f2 100644
>> --- a/drivers/usb/serial/option.c
>> +++ b/drivers/usb/serial/option.c
>> @@ -1679,7 +1679,7 @@ static const struct usb_device_id option_ids[] = {
>> { USB_DEVICE(CINTERION_VENDOR_ID, CINTERION_PRODUCT_EU3_P) },
>> { USB_DEVICE(CINTERION_VENDOR_ID, CINTERION_PRODUCT_PH8),
>> .driver_info = (kernel_ulong_t)&net_intf4_blacklist },
>> - { USB_DEVICE(CINTERION_VENDOR_ID, CINTERION_PRODUCT_AHXX) },
>> + { USB_DEVICE_INTERFACE_CLASS(CINTERION_VENDOR_ID, CINTERION_PRODUCT_AHXX, 0xff) },
>> { USB_DEVICE(CINTERION_VENDOR_ID, CINTERION_PRODUCT_PLXX),
>> .driver_info = (kernel_ulong_t)&net_intf4_blacklist },
>> { USB_DEVICE(CINTERION_VENDOR_ID, CINTERION_PRODUCT_HC28_MDM) },
> Thanks for the patch.
>
> Could you provide the output of lsusb -v for this device?
>
> Thanks,
> Johan
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