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USB: remove the URB_NO_FSBR flag

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The URB_NO_FSBR flag has never really been used.  It was introduced as
a potential way for UHCI to minimize PCI bus usage (by not attempting
full-speed bulk and control transfers more than once per frame), but
the flag was not set by any drivers.

There's no point in keeping it around.  This patch simplifies the API
by removing it.  Unfortunately, it does have to be kept as part of the
usbfs ABI, but at least we can document in
include/uapi/linux/usbdevice_fs.h that it doesn't do anything.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alan Stern
2017-12-11 11:58:21 -05:00
committed by Greg Kroah-Hartman
parent 4ff02f099f
commit aa15d3d257
7 changed files with 2 additions and 13 deletions
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3
drivers/usb/usbip/stub_rx.c
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@@ -412,9 +412,6 @@ static void masking_bogus_flags(struct urb *urb)
if (is_out)
allowed |= URB_ZERO_PACKET;
/* FALLTHROUGH */
case USB_ENDPOINT_XFER_CONTROL:
allowed |= URB_NO_FSBR; /* only affects UHCI */
/* FALLTHROUGH */
default: /* all non-iso endpoints */
if (!is_out)
allowed |= URB_SHORT_NOT_OK;