rockbox/firmware/target
Tomasz Moń 663d846cf3 Sansa Connect: Disable endpoint double buffering
Disabling double buffering results in expected CPPI TX behaviour. With
the double buffering enabled, sending single ZLP resulted in two ZLPs
being available. The two ZLPs is problematic because this causes Windows
to reset USB device after failed SCSI command.

The problematic sequence on Windows 10 was as follows:
  * Host sends SCSI Mode Sense(6) Informational Exceptions Control(0x1C)
  * Device sends ZLP
  * Device sends command failed response

With endpoint double buffering enabled the ZLP was read twice by host.
As host was expecting command response on the second read (and got ZLP
instead), host attempts recovery by resetting USB device and retrying.

Change-Id: I64e95998f429ffb7b14143d956b1f29d20218d14
2021-06-12 13:54:54 +00:00
..
arm Sansa Connect: Disable endpoint double buffering 2021-06-12 13:54:54 +00:00
coldfire h300, Others Bugfix Bootloader backlight_init() 2020-11-13 18:08:01 +00:00
hosted Nuke the never-functional iriver ifp-7xx port 2021-04-26 07:42:58 -04:00
mips Spin off common ft6x06 code to a driver 2021-06-11 20:09:38 +01:00