Messages in this thread | | | Date | Tue, 6 Jun 2006 11:30:51 -0700 | From | "Nish Aravamudan" <> | Subject | Re: Backport of a 2.6.x USB driver to 2.4.32 - help needed |
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On 6/6/06, Jesper Juhl <jesper.juhl@gmail.com> wrote: > On 06/06/06, Heiko Gerstung <heiko.gerstung@meinberg.de> 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*()?
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