[Bug 264335] [NEW] USB<->Serial converter based on Moschip 7840 does not work in Hardy
Launchpad Bug Tracker
264335 at bugs.launchpad.net
Thu May 27 22:16:51 UTC 2010
You have been subscribed to a public bug:
I've just upgraded my server from Gutsy to Hardy.
Most of my applications is still working (eventhough some fixes where needed). However there is one final thing that doesn't work; my USB <-> Serial converter.
The converter is identified by the system that the mos7840 module is
loaded. But when the module should identify the converter I get the
message "probe of 8-1:1.0 failed with error -5". When running Gutsy
everything worked fine.
See below for log extracts from dmesg from my server running Gutsy and
Hardy. I've also included an verbose listing of lsusb on the converter.
Output from dmesg in Hardy:
[ 38.565449] /build/buildd/linux-2.6.24/drivers/usb/serial/mos7840.c: Moschip 7840/7820 USB Serial Driver 1.3.1
[ 38.565472] mos7840: probe of 8-1:1.0 failed with error -5
[ 38.565480] usbcore: registered new interface driver mos7840
Output from dmesg in Gutsy:
[ 34.265121] /build/buildd/linux-source-2.6.22-2.6.22/drivers/usb/serial/mos7840.c: Moschip 7840/7820 USB Serial Driver 1.3.1
[ 34.265140] mos7840 8-1:1.0: Moschip 7840/7820 USB Serial Driver converter detected
[ 34.271350] usbcore: registered new interface driver mos7840
lsusb -v
Code:
Bus 008 Device 003: ID 9710:7840 MosChip Semiconductor
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 255 Vendor Specific Class
bDeviceSubClass 0
bDeviceProtocol 255
bMaxPacketSize0 64
idVendor 0x9710 MosChip Semiconductor
idProduct 0x7840
bcdDevice 0.01
iManufacturer 0
iProduct 0
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 81
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xa0
(Bus Powered)
Remote Wakeup
MaxPower 100mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 9
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 0
bInterfaceProtocol 255
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 255
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 255
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 255
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 255
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 255
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x06 EP 6 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 255
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 255
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x08 EP 8 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 255
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x89 EP 9 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0010 1x 16 bytes
bInterval 5
Device Qualifier (for other device speed):
bLength 10
bDescriptorType 6
bcdUSB 2.00
bDeviceClass 255 Vendor Specific Class
bDeviceSubClass 0
bDeviceProtocol 255
bMaxPacketSize0 64
bNumConfigurations 1
Device Status: 0x0000
(Bus Powered)
I've run out on ideas on how to handle the error. Any ideas?
/Andreas
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Incomplete
--
USB<->Serial converter based on Moschip 7840 does not work in Hardy
https://bugs.launchpad.net/bugs/264335
You received this bug notification because you are a member of Kernel Bugs, which is subscribed to linux in ubuntu.
More information about the kernel-bugs
mailing list