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Lukáš Lalinský authored
[ Upstream commit d9b2997e ] Add a quirk for WORLDE easykey.25 MIDI keyboard (idVendor=0218, idProduct=0401). The device reports that it has config string descriptor at index 3, but when the system selects the configuration and tries to get the description, it returns a -EPROTO error, the communication restarts and this keeps repeating over and over again. Not requesting the string descriptor makes the device work correctly. Relevant info from Wireshark: [...] CONFIGURATION DESCRIPTOR bLength: 9 bDescriptorType: 0x02 (CONFIGURATION) wTotalLength: 101 bNumInterfaces: 2 bConfigurationValue: 1 iConfiguration: 3 Configuration bmAttributes: 0xc0 SELF-POWERED NO REMOTE-WAKEUP 1... .... = Must be 1: Must be 1 for USB 1.1 and higher .1.. .... = Self-Powered: This device is SELF-POWERED ..0. .... = Remote Wakeup: This device does NOT support remote wakeup bMaxPower: 50 (100mA) [...] 45 0.369104 host 2.38.0 USB 64 GET DESCRIPTOR Request STRING [...] URB setup bmRequestType: 0x80 1... .... = Direction: Device-to-host .00. .... = Type: Standard (0x00) ...0 0000 = Recipient: Device (0x00) bRequest: GET DESCRIPTOR (6) Descriptor Index: 0x03 bDescriptorType: 0x03 Language Id: English (United States) (0x0409) wLength: 255 46 0.369255 2.38.0 host USB 64 GET DESCRIPTOR Response STRING[Malformed Packet] [...] Frame 46: 64 bytes on wire (512 bits), 64 bytes captured (512 bits) on interface 0 USB URB [Source: 2.38.0] [Destination: host] URB id: 0xffff88021f62d480 URB type: URB_COMPLETE ('C') URB transfer type: URB_CONTROL (0x02) Endpoint: 0x80, Direction: IN Device: 38 URB bus id: 2 Device setup request: not relevant ('-') Data: present (0) URB sec: 1484896277 URB usec: 455031 URB status: Protocol error (-EPROTO) (-71) URB length [bytes]: 0 Data length [bytes]: 0 [Request in: 45] [Time from request: 0.000151000 seconds] Unused Setup Header Interval: 0 Start frame: 0 Copy of Transfer Flags: 0x00000200 Number of ISO descriptors: 0 [Malformed Packet: USB] [Expert Info (Error/Malformed): Malformed Packet (Exception occurred)] [Malformed Packet (Exception occurred)] [Severity level: Error] [Group: Malformed] Signed-off-by:
Lukáš Lalinský <lukas@oxygene.sk> Cc: stable <stable@vger.kernel.org> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
Sasha Levin <alexander.levin@verizon.com>
b8547ab3