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| author | Bin Liu <b-liu@ti.com> | 2016-04-25 20:53:30 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-04-26 21:50:02 (GMT) |
| commit | f551e13529833e052f75ec628a8af7b034af20f9 (patch) | |
| tree | 3cf30098141b9c961db96ac5b06b2d3c7138f452 /drivers/usb/musb | |
| parent | 607fb0f4d90cc9a4463bcb17c1417d8a709dfda1 (diff) | |
| download | linux-f551e13529833e052f75ec628a8af7b034af20f9.tar.xz | |
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>
Diffstat (limited to 'drivers/usb/musb')
| -rw-r--r-- | drivers/usb/musb/musb_host.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c index 58487a4..2f8ad7f 100644 --- a/drivers/usb/musb/musb_host.c +++ b/drivers/usb/musb/musb_host.c @@ -2735,7 +2735,7 @@ static const struct hc_driver musb_hc_driver = { .description = "musb-hcd", .product_desc = "MUSB HDRC host driver", .hcd_priv_size = sizeof(struct musb *), - .flags = HCD_USB2 | HCD_MEMORY | HCD_BH, + .flags = HCD_USB2 | HCD_MEMORY, /* not using irq handler or reset hooks from usbcore, since * those must be shared with peripheral code for OTG configs |