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Date: Sun, 05 Oct 2014 11:14:44 +0200
From: Jan Kiszka <jan.kiszka@....de>
To: Hans de Goede <hdegoede@...hat.com>,
linux-usb <linux-usb@...r.kernel.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: uas: module not loaded automatically
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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