es1371 driver

[Wilmer van der Gaast <lintux@lintux.cx>]

(I found two addresses for Thomas, which one is the right one?)

Hello,

My computer has a SB PCI128 card and works perfectly with it. But, one
strange thing with the current Linux driver for it. Here a piece from
es1381_open:

	/* wait for device to become free */
	down(&s->open_sem);
	while (s->open_mode & file->f_mode) {
		if (file->f_flags & O_NONBLOCK) {
			up(&s->open_sem);
			return -EBUSY;
		}
		add_wait_queue(&s->open_wait, &wait);
		__set_current_state(TASK_INTERRUPTIBLE);
		up(&s->open_sem);
		schedule();
		remove_wait_queue(&s->open_wait, &wait);
		set_current_state(TASK_RUNNING);
		if (signal_pending(current))
			return -ERESTARTSYS;
		down(&s->open_sem);
	}

Why does it wait? When I play an MP3 and meanwhile accidentally visit a
website which uses Flash, the whole Mozilla process freezes because it can't
get /dev/dsp. Maybe all programs should be blamed for opening /dev/dsp
without O_NONBLOCK, but for me altering this piece of kernel code worked a
lot better. Now any open() is handled as O_NONBLOCK and I don't get those
crashes anymore.

Anyway, why this crashy behaviour by default? :-/


Greetings,

Wilmer van der Gaast.

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