From: Jeff Garzik <jeff@garzik.org>
To: Robert Hancock <hancockrwd@gmail.com>
Cc: ide <linux-ide@vger.kernel.org>
Subject: Re: [PATCH] libata: fix reporting of drained bytes when clearing DRQ
Date: Wed, 16 Dec 2009 05:21:30 -0500 [thread overview]
Message-ID: <4B28B4AA.9080102@garzik.org> (raw)
In-Reply-To: <4B283507.1090808@gmail.com>
On 12/15/2009 08:16 PM, Robert Hancock wrote:
> 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?
No worries, it's in the local queue...
Jeff
prev parent reply other threads:[~2009-12-16 10:21 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
2009-12-16 10:21 ` Jeff Garzik [this message]
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