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| author | Jing Leng <[email protected]> | 2022-07-20 18:48:15 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <[email protected]> | 2022-08-19 11:11:16 +0200 |
| commit | f511aef2ebe5377d4c263842f2e0c0b8e274e8e5 (patch) | |
| tree | ef22e8c687767b682c8503603ab4769795454425 /include/linux/fpga/fpga-bridge.h | |
| parent | 6020f480004a80cdad4ae5ee180a231c4f65595b (diff) | |
usb: gadget: f_uac2: fix superspeed transfer
On page 362 of the USB3.2 specification (
https://usb.org/sites/default/files/usb_32_20210125.zip),
The 'SuperSpeed Endpoint Companion Descriptor' shall only be returned
by Enhanced SuperSpeed devices that are operating at Gen X speed.
Each endpoint described in an interface is followed by a 'SuperSpeed
Endpoint Companion Descriptor'.
If users use SuperSpeed UDC, host can't recognize the device if endpoint
doesn't have 'SuperSpeed Endpoint Companion Descriptor' followed.
Currently in the uac2 driver code:
1. ss_epout_desc_comp follows ss_epout_desc;
2. ss_epin_fback_desc_comp follows ss_epin_fback_desc;
3. ss_epin_desc_comp follows ss_epin_desc;
4. Only ss_ep_int_desc endpoint doesn't have 'SuperSpeed Endpoint
Companion Descriptor' followed, so we should add it.
Fixes: eaf6cbe09920 ("usb: gadget: f_uac2: add volume and mute support")
Cc: stable <[email protected]>
Signed-off-by: Jing Leng <[email protected]>
Signed-off-by: Jack Pham <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Diffstat (limited to 'include/linux/fpga/fpga-bridge.h')
0 files changed, 0 insertions, 0 deletions