linux-kernel - Re: [linux-pm] [PATCH] resume: wait for device probing to finish

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Date:	Thu, 15 Jan 2009 12:34:36 +1100
From:	Nigel Cunningham <ncunningham@...a.org.au>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	Andrew Morton <akpm@...ux-foundation.org>, pavel@...e.cz,
	linux-pm@...ts.linux-foundation.org,
	Arjan van de Ven <arjan@...radead.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [linux-pm] [PATCH] resume: wait for device probing to finish

Hi Rafael etc.

On Thu, 2009-01-15 at 00:39 +0100, Rafael J. Wysocki wrote:

[...]
 
>  /**
> + * wait_for_device_probe
> + * Wait for device probing to be completed.
> + *
> + * Note: this function polls at 100 msec intervals.
> + */
> +int wait_for_device_probe(void)
> +{
> +	/* wait for the known devices to complete their probing */
> +	while (driver_probe_done() != 0)
> +		msleep(100);
> +	async_synchronize_full();
> +	return 0;
> +}
> +

Am I missing something? I can't see why you're polling instead of using
probe_waitqueue.

Regards,

Nigel

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