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@xxxxxxxxx>
Note: This patch is not related to the WARNING-on-unthrottle issue
I reported earlier.
diff -urNp linux-2.6.31/drivers/usb/serial/generic.c linux-2.6.31-throttle/drivers/usb/serial/generic.c
--- linux-2.6.31/drivers/usb/serial/generic.c 2009-09-10 00:13:59.000000000 +0200
+++ linux-2.6.31-throttle/drivers/usb/serial/generic.c 2009-09-23 20:25:36.000000000 +0200
@@ -530,7 +530,7 @@ void usb_serial_generic_unthrottle(struc
if (was_throttled) {
/* Resume reading from device */
- usb_serial_generic_resubmit_read_urb(port, GFP_KERNEL);
+ flush_and_resubmit_read_urb(port);
}
}
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