Hi,
I'm working on the emu10k1 sound driver (the creative open source one)
and starting with kernel 2.3.45 I am seeing a problem where a schedule
bottom half is never run.
I've browsed trough the 2.3.45 patch and realized that there were some
changes in this area, so I would like to know if the semantics were
changed and the driver code needs to be modified or if some bug was
introduced :(
The relevant pieces of code are:
struct emu_timer
{
struct emu_timer *next;
struct tq_struct *task;
unsigned delay;
};
timer_top_half(){
struct emu_timer *timer;
timer = sb_hw->timer;
while (timer != NULL)
{
queue_task(timer->task, &tq_immediate);
mark_bh(IMMEDIATE_BH);
timer = timer->next;
}
}
The code works well in 2.2.14 and I have checked that the structures aren't
corrupted. Also there is no oops and I can still remove the module, only the
bottom half code is never executed...
I'm trying this on a SMP kernel.
Rui Sousa
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