On Tue, 2021-01-26 at 16:27 +0200, Mathias Nyman wrote:

On 26.1.2021 16.13, Greg Kroah-Hartman wrote:

quoted

On Wed, Jan 13, 2021 at 06:05:11PM +0800, Ikjoon Jang wrote:

quoted

xhci-mtk needs XHCI_MTK_HOST quirk functions in add_endpoint() and
drop_endpoint() to handle its own sw bandwidth management.

It stores bandwidth data into an internal table every time
add_endpoint() is called, and drops those in drop_endpoint().
But when bandwidth allocation fails at one endpoint, all earlier
allocation from the same interface could still remain at the table.

This patch moves bandwidth management codes to check_bandwidth() and
reset_bandwidth() path. To do so, this patch also adds those functions
to xhci_driver_overrides and lets mtk-xhci to release all failed
endpoints in reset_bandwidth() path.

Fixes: 08e469de87a2 ("usb: xhci-mtk: supports bandwidth scheduling with multi-TT")
Signed-off-by: Ikjoon Jang <redacted>

Mathias, any objection to me taking this patch, or do you have others
being queued up for 5.11-final?

No objections, haven't tried it out but it looks good to me.

If I finish some additional small fix for 5.11-final I can make it on top of this

Please give me some time to test this patch, thank you

-Mathias