From: Jeff Garzik <jgarzik@pobox.com>
To: Mark Lord <liml@rtr.ca>
Cc: IDE/ATA development list <linux-ide@vger.kernel.org>,
Tejun Heo <htejun@gmail.com>
Subject: Re: [PATCH] sata_mv: safer logic for limit_warnings
Date: Fri, 04 Jul 2008 09:11:29 -0400 [thread overview]
Message-ID: <486E2181.5070808@pobox.com> (raw)
In-Reply-To: <4859BD16.4020600@rtr.ca>
Mark Lord wrote:
> There is a miniscule chance that two separate host controllers
> might be in sata_mv at the same time and manage to decrement
> the static limit_warnings variable below zero.
>
> Fix the comparison to deal with it.
>
> Signed-off-by: Mark Lord <mlord@pobox.com>
> ---
>
> (blush) How did I miss that ???
>
> --- old/drivers/ata/sata_mv.c 2008-06-17 19:22:15.000000000 -0400
> +++ linux//drivers/ata/sata_mv.c 2008-06-18 21:52:19.000000000 -0400
> @@ -1607,7 +1607,7 @@
> * Much of the time, this could just work regardless.
> * So for now, just log the incident, and allow the attempt.
> */
> - if (limit_warnings && (qc->nbytes / qc->sect_size) > 1) {
> + if (limit_warnings > 0 && (qc->nbytes / qc->sect_size) > 1) {
> --limit_warnings;
> ata_link_printk(qc->dev->link, KERN_WARNING, DRV_NAME
applied. sorry, this got buried, should have gone in sooner.
prev parent reply other threads:[~2008-07-04 13:11 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-18 16:11 [PATCH 01/02] sata_mv: enable async_notify for 60x1 Rev.C0 and higher Mark Lord
2008-06-18 16:13 ` [PATCH 02/02] sata_mv: warn on PIO with multiple DRQs Mark Lord
2008-06-19 0:29 ` Jeff Garzik
2008-06-19 1:44 ` Mark Lord
2008-06-19 1:48 ` Tejun Heo
2008-06-19 1:56 ` Jeff Garzik
2008-06-19 2:00 ` Mark Lord
2008-06-19 6:28 ` Jeff Garzik
2008-06-19 20:23 ` Mark Lord
2008-06-19 1:57 ` [PATCH] sata_mv: safer logic for limit_warnings Mark Lord
2008-07-04 13:11 ` Jeff Garzik [this message]
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