On 6/6/06, Jesper Juhl <[email protected]> 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.
schedule_timeout_uninterruptible() is used to sleep on a wait-queue,
which 2.4.x does not have.
schedule_timeout_uninterruptible(timeout_value) is just a wrapper for
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(timeout_value);
Maybe you were thinking of sleep_on*()?
Thanks,
Nish
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