Hi,
On Mon, 20 Nov 2023 01:08:34 +0100, Simon Holesch wrote:
The ChipIdea device controller wasn't properly cleaned up when disabled. So enabling it again left it in a broken state. The problem occurred for example when the host unbinds the driver and binds it again.
During the first setup, when the out request is queued, the endpoint is primed (`epprime`). If the endpoint is then disabled, it stayed primed with the initial buffer. So after the endpoint is re-enabled, the device controller and device driver were out of sync: the new out request was in the driver queue head, yet not submitted, but the "complete" function was still called, since the endpoint was primed with the old buffer.
[...]
Thanks, Applied to https://source.denx.de/u-boot/custodians/u-boot-dfu (u-boot-dfu)
[1/2] usb: ci: Fix gadget reinit https://source.denx.de/u-boot/custodians/u-boot-dfu/-/commit/b272c87925025a4... [2/2] usb: fastboot: Add missing newline in pr_err https://source.denx.de/u-boot/custodians/u-boot-dfu/-/commit/6f68dcd0259f9f1...
-- Mattijs