diff options
| author | Bin Liu <b-liu@ti.com> | 2016-04-25 15:53:30 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-04-26 14:50:02 -0700 |
| commit | f551e13529833e052f75ec628a8af7b034af20f9 (patch) | |
| tree | 3cf30098141b9c961db96ac5b06b2d3c7138f452 | |
| parent | 607fb0f4d90cc9a4463bcb17c1417d8a709dfda1 (diff) | |
Revert "usb: musb: musb_host: Enable HCD_BH flag to handle urb return in bottom half"
This reverts commit 2035772010db634ec8566b658fb1cd87ec47ac77.
Commit 20357720 claims throughput improvement for MSC/UVC, but I
don't see much improvement. Following are the MSC measurement using
dd on AM335x GP EVM.
with BCD_BH: read: 14.9MB/s, write: 20.9MB/s
without BCD_BH: read: 15.2MB/s, write: 21.2MB/s
However with this commit the following regressions have been observed.
1. ASIX usb-ethernet dongle is completely broken on UDP RX.
2. Unpluging a 3G modem, which uses option driver, behind a hub causes
console log flooding with the following message.
option_instat_callback: error -71
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>