linux-kernel - Re: [PATCH 5/8] rsxx: Adding in sync

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Date:	Wed, 29 May 2013 21:23:13 +0300
From:	Andy Shevchenko <andy.shevchenko@...il.com>
To:	"Philip J. Kelleher" <pjk1939@...ux.vnet.ibm.com>
Cc:	axboe@...nel.dk,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 5/8] rsxx: Adding in sync_start module paramenter.

On Wed, May 29, 2013 at 12:12 AM, Philip J. Kelleher
<pjk1939@...ux.vnet.ibm.com> wrote:
> From: Philip J Kelleher <pjk1939@...ux.vnet.ibm.com>
>
> Adding a module parameter called 'sync_start' to wait for
> the card to fully up and running before driver load is
> complete.


> +++ linux-block/drivers/block/rsxx/core.c       2013-05-02 17:32:20.341185588 -0500
> @@ -41,6 +41,8 @@
>  #include "rsxx_cfg.h"
>
>  #define NO_LEGACY 0
> +#define NO_SYNC_START 0
> +#define SYNC_START_TIMEOUT (10 * 60) /* 10 minutes */

10 minutes is indefinite time. May be you have to load timer and
create device only after successfull initialization of the device?

> @@ -874,6 +882,33 @@ static int rsxx_pci_probe(struct pci_dev
>                 if (st)
>                         dev_crit(CARD_TO_DEV(card),
>                                 "Failed issuing card startup\n");
> +               if (sync_start) {
> +                       sync_timeout = SYNC_START_TIMEOUT;
> +
> +                       dev_info(CARD_TO_DEV(card),
> +                                "Waiting for card to startup\n");
> +
> +                       do {
> +                               ssleep(1);

Why not timers?

--
With Best Regards,
Andy Shevchenko
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