USB: serial: clean up read processing in generic driver

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Always process and flush read urb, but only resubmit when not throttled.
The new tty-layer supply plenty of slack so there is really no need to
cache and delay processing of a single urb while throttled.

Note that unthrottle now submits using GFP_KERNEL as we are not in
atomic context (so there is no need to save irq state either).

Note also that the process_read_urb function could be added to
usb_serial_driver should any driver need to do any device specific
processing.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

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Johan Hovold 2010-03-17 23:05:56 +01:00 • committed by Greg Kroah-Hartman

parent 2db6c7698b

commit 0f3d5bae2b

1 changed files with 11 additions and 16 deletions

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drivers/usb/serial/generic.c

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