Jesper Juhl wrote:
On 06/06/06, Heiko Gerstung <[email protected]> wrote:
Hi!
Short Version (tm): I try to backport a USB driver (rtl8150.c) from
2.6.15.x to 2.4.32 and have no idea how to substitue two functions:
in_atomic() and schedule_timeout_uninterruptible() ... I really would
appreciate any help, because I am no kernel hacker at all ...
in_atomic() is used to test if the kernel is in a state where sleeping
is allowed or not. The 2.4.x kernel is not preemptive and has quite
coarse grained SMP support (the BKL "Big Kernel Lock"), it didin't
need in_atomic() in the same way as 2.6.x does.
There's little difference in the need for it, 2.4 just doesn't have it.
I don't see a call to that function in that driver's code though?
schedule_timeout_uninterruptible() is used to sleep on a wait-queue,
which 2.4.x does not have.
Huh? 2.4 did have wait queues, but that call has nothing to do with
them. You should be able to replace it with:
set_current_state( TASK_UNINTERRUPTIBLE );
schedule_timeout( timeout );
--
Robert Hancock Saskatoon, SK, Canada
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Home Page: http://www.roberthancock.com/
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