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USB: Fix throttling in generic usbserial driver 

The generic usbserial driver in Linux 2.6.31 halts its receiving
channel in response to throttle requests from the line discipline.
Unfortunately it drops the contents of the first URB received after
throttling takes effect. This patch corrects that problem.

Signed-off-by: Joris van Rantwijk <jorispubl@xs4all.nl>
Acked-by: Johan Hovold <jhovold@gmail.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
hifive-unleashed-5.1
Joris van Rantwijk 2009-09-24 20:20:20 +02:00 committed by Greg Kroah-Hartman
parent 6f88139eb9
commit 63a9609513
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/serial/generic.c
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@ -546,7 +546,7 @@ void usb_serial_generic_unthrottle(struct tty_struct *tty)
if (was_throttled) {
/* Resume reading from device */
usb_serial_generic_resubmit_read_urb(port, GFP_KERNEL);
flush_and_resubmit_read_urb(port);
}
}