From: Robert Hancock <hancockrwd@gmail.com>
To: Jeff Garzik <jeff@garzik.org>
Cc: ide <linux-ide@vger.kernel.org>
Subject: Re: [PATCH] libata: fix reporting of drained bytes when clearing DRQ
Date: Tue, 15 Dec 2009 19:16:55 -0600 [thread overview]
Message-ID: <4B283507.1090808@gmail.com> (raw)
In-Reply-To: <4B1F0FEA.7070403@gmail.com>
On 12/08/2009 08:48 PM, Robert Hancock wrote:
> When we drain data from a device to clear DRQ during error recovery, the number
> of bytes reported as drained is too low by a factor of 2 because the count
> is actually reporting the number of words drained, not bytes. Fix this.
>
> Signed-off-by: Robert Hancock<hancockrwd@gmail.com>
>
> diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c
> index 51eb1e2..3afa21b 100644
> --- a/drivers/ata/libata-sff.c
> +++ b/drivers/ata/libata-sff.c
> @@ -2275,7 +2275,7 @@ void ata_sff_drain_fifo(struct ata_queued_cmd *qc)
> ap = qc->ap;
> /* Drain up to 64K of data before we give up this recovery method */
> for (count = 0; (ap->ops->sff_check_status(ap)& ATA_DRQ)
> - && count< 32768; count++)
> + && count< 65536; count += 2)
> ioread16(ap->ioaddr.data_addr);
>
> /* Can become DEBUG later */
Jeff, ping?
next prev parent reply other threads:[~2009-12-16 1:16 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-09 2:48 [PATCH] libata: fix reporting of drained bytes when clearing DRQ Robert Hancock
2009-12-16 1:16 ` Robert Hancock [this message]
2009-12-16 10:21 ` Jeff Garzik
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