On 2/5/20 4:00 PM, Alan Stern wrote: > On Wed, 5 Feb 2020, Jiri Kosina wrote: > >> On Wed, 5 Feb 2020, Enderborg, Peter wrote: >> >>>>> This patch breaks Elgato StreamDeck. >>>> Does that mean the device is broken with a too-large of a report? >>> Yes. >> In which way does the breakage pop up? Are you getting "report too long" >> errors in dmesg, or the device just doesn't enumerate at all? >> >> Could you please post /sys/kernel/debug/hid/<device>/rdesc contents, and >> if the device is at least semi-alive, also contents of >> /sys/kernel/debug/hid/<device>/events from the time it misbehaves? > Also, please post the output from "lsusb -v" for the StreamDeck. Bus 002 Device 008: ID 0fd9:0060 Elgato Systems GmbH Stream Deck Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 0 bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 64 idVendor 0x0fd9 Elgato Systems GmbH idProduct 0x0060 bcdDevice 1.00 iManufacturer 1 iProduct 2 iSerial 3 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 0x0029 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0xe0 Self Powered Remote Wakeup MaxPower 400mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 2 bInterfaceClass 3 Human Interface Device bInterfaceSubClass 0 bInterfaceProtocol 0 iInterface 0 HID Device Descriptor: bLength 9 bDescriptorType 33 bcdHID 1.11 bCountryCode 0 Not supported bNumDescriptors 1 bDescriptorType 34 Report wDescriptorLength 248 Report Descriptors: ** UNAVAILABLE ** Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 1 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x02 EP 2 OUT bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 1 > Alan Stern >
