Hello, Aaron.
On Sun, Jan 06, 2013 at 10:48:25AM +0800, Aaron Lu wrote:
> +/* Check zero power ready status */
> +void zpodd_on_suspend(struct ata_device *dev)
> +{
> + struct zpodd *zpodd = dev->zpodd;
> + unsigned long expires;
> +
> + if (!zpready(dev)) {
> + zpodd->zp_ready = false;
> + zpodd->last_ready = 0;
> + return;
> + }
> +
> + if (!zpodd->last_ready) {
> + zpodd->last_ready = jiffies;
> + return;
> + }
> +
> + expires = zpodd->last_ready +
> + msecs_to_jiffies(zpodd_poweroff_delay * 1000);
> + if (time_before(jiffies, expires))
> + return;
> +
> + zpodd->zp_ready = true;
> +}
Using 0 jiffies as special value is generally considered a bad form.
It should be mostly ok here but it's not like avoiding that is
difficult, so let's please not use 0 jiffies as special value. If you
have to, add another variable zp_sample_cnt or whatever.
Thanks.
--
tejun
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