Re: uas: module not loaded automatically

[Jan Kiszka <jan.kiszka@web.de>]

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On 2014-10-05 11:08, Hans de Goede wrote:
> Hi,
> 
> On 10/04/2014 08:35 PM, Jan Kiszka wrote:
>> Hi,
>>
>> my Delock external USB drive stopped working after updating from a
>> UAS-disabled distro kernel to latest 3.17-rc7 with UAS on. That UAS was
>> key became clear to me only after looking at storage_probe(): the device
>> is ignored by usb-storage if it is UAS-capable. However, nothing causes
>> uas.ko to be loaded when the drive is plugged here. How is this supposed
>> to work in the normal case?
> 
> Is the uas.ko module installed, and was depmod run after installing it ?

Definitely. Just retried after another depmod -a, and only modprobe uas
made it work.

> 
> uas.c has the following:
> 
>         { USB_INTERFACE_INFO(USB_CLASS_MASS_STORAGE, USB_SC_SCSI, USB_PR_BULK) },
>         { USB_INTERFACE_INFO(USB_CLASS_MASS_STORAGE, USB_SC_SCSI, USB_PR_UAS) },
> 
> Which should make it load automatically on your device.

Should this match with what lsusb -v reports for the device? I have no
reference to a device with working UAS-probe.

Jan

> 
> Regards,
> 
> Hans
> 
> 
>>
>> lsusb of the device below.
>>
>> Jan
>>
>> ---
>>
>> Bus 001 Device 009: ID 174c:5136 ASMedia Technology Inc.
>> Device Descriptor:
>>   bLength                18
>>   bDescriptorType         1
>>   bcdUSB               2.10
>>   bDeviceClass            0 (Defined at Interface level)
>>   bDeviceSubClass         0
>>   bDeviceProtocol         0
>>   bMaxPacketSize0        64
>>   idVendor           0x174c ASMedia Technology Inc.
>>   idProduct          0x5136
>>   bcdDevice            1.00
>>   iManufacturer           2 Delock
>>   iProduct                3 42514
>>   iSerial                 1 200000000CB4
>>   bNumConfigurations      1
>>   Configuration Descriptor:
>>     bLength                 9
>>     bDescriptorType         2
>>     wTotalLength           85
>>     bNumInterfaces          1
>>     bConfigurationValue     1
>>     iConfiguration          0
>>     bmAttributes         0xc0
>>       Self Powered
>>     MaxPower              100mA
>>     Interface Descriptor:
>>       bLength                 9
>>       bDescriptorType         4
>>       bInterfaceNumber        0
>>       bAlternateSetting       0
>>       bNumEndpoints           2
>>       bInterfaceClass         8 Mass Storage
>>       bInterfaceSubClass      6 SCSI
>>       bInterfaceProtocol     80 Bulk-Only
>>       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               0
>>       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               0
>>     Interface Descriptor:
>>       bLength                 9
>>       bDescriptorType         4
>>       bInterfaceNumber        0
>>       bAlternateSetting       1
>>       bNumEndpoints           4
>>       bInterfaceClass         8 Mass Storage
>>       bInterfaceSubClass      6 SCSI
>>       bInterfaceProtocol     98
>>       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               0
>>         Data-in pipe (0x03)
>>       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               0
>>         Data-out pipe (0x04)
>>       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               0
>>         Status pipe (0x02)
>>       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               0
>>         Command pipe (0x01)
>> Binary Object Store Descriptor:
>>   bLength                 5
>>   bDescriptorType        15
>>   wTotalLength           22
>>   bNumDeviceCaps          2
>>   USB 2.0 Extension Device Capability:
>>     bLength                 7
>>     bDescriptorType        16
>>     bDevCapabilityType      2
>>     bmAttributes   0x00000002
>>       Link Power Management (LPM) Supported
>>   SuperSpeed USB Device Capability:
>>     bLength                10
>>     bDescriptorType        16
>>     bDevCapabilityType      3
>>     bmAttributes         0x00
>>     wSpeedsSupported   0x000e
>>       Device can operate at Full Speed (12Mbps)
>>       Device can operate at High Speed (480Mbps)
>>       Device can operate at SuperSpeed (5Gbps)
>>     bFunctionalitySupport   1
>>       Lowest fully-functional device speed is Full Speed (12Mbps)
>>     bU1DevExitLat          10 micro seconds
>>     bU2DevExitLat        2047 micro seconds
>> Device Status:     0x0001
>>   Self Powered
>>



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