1085ce6157
When using the serial console over USB to download files, and when the USB bandwidth is pushed to its limits, the barebox UDC device won't be able to absorb all the traffic. Modify the u_serial gadget so that if there is not enough room in buffers, don't push USB requests down the gadget driver, so that it is saturated, and give it a chance to NAK requests. The previous behaviour was loosing bytes (as kfifo_put is lossy). The fixed behavious is lossless (based on USB NAK protocol). While at it, increase a bit buffer sizes to 8kB to absorb heavy transfers such as a linux kernel image. Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> |
||
|---|---|---|
| .. | ||
| core | ||
| gadget | ||
| host | ||
| otg | ||
| storage | ||
| Kconfig | ||
| Makefile | ||