Hello Sascha,
On Wed, Mar 11, 2020 at 03:27:46PM +0100, Sascha Hauer wrote:
> +/**
> + * slice_acquired: test if a slice is acquired
> + * @slice: The slice to test
> + *
> + * This tests if a slice is acquired. Returns true if it is, false otherwise
> + */
> +bool slice_acquired(struct slice *slice)
> +{
> + struct slice_entry *se;
> + int acquired = slice->acquired;
> + bool ret = false;
> +
> + if (acquired > 0)
> + return true;
> +
> + if (acquired < 0) {
> + pr_err("Recursive dependency detected in slice %s\n",
> + slice_name(slice));
> + panic("Cannot continue");
> + }
> +
> + slice->acquired = -1;
> +
> + list_for_each_entry(se, &slice->deps, list)
> + if (slice_acquired(se->slice)) {
> + ret = true;
> + break;
> + }
> +
> + slice->acquired = acquired;
no need to restore slice->acquire from acquired since
acquired must have been zero if we reach this line.
Best regards,
Daniel
--
Dipl.-Math. Daniel Glöckner, emlix GmbH, http://www.emlix.com
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