linux-kernel - Re: [PATCH] libata: add support for NCQ commands for SG interface

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Message-ID: <562296AB.4010500@cogentembedded.com>
Date:	Sat, 17 Oct 2015 21:42:51 +0300
From:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:	Vinayak Kale <vinayak.kale@...il.com>
Cc:	tj@...nel.org, linux-ide@...r.kernel.org,
	linux-kernel@...r.kernel.org, sumit.g.gupta@...gate.com,
	Vinayak Kale <vinayak.kale@...gate.com>
Subject: Re: [PATCH] libata: add support for NCQ commands for SG interface

On 10/17/2015 3:25 PM, Vinayak Kale wrote:

>>> From: Vinayak Kale <vinayak.kale@...gate.com>
>>>
>>> This patch is needed to make NCQ commands with FPDMA protocol value
>>> (eg READ/WRITE FPDMA) work over SCSI Generic (SG) interface.
>>>
>>> Signed-off-by: Vinayak Kale <vinayak.kale@...gate.com>
>>> ---
>>>    drivers/ata/libata-scsi.c | 10 ++++++++--
>>>    1 file changed, 8 insertions(+), 2 deletions(-)
>>>
>>> diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
>>> index 0d7f0da..5b0a5ab 100644
>>> --- a/drivers/ata/libata-scsi.c
>>> +++ b/drivers/ata/libata-scsi.c
>>
>> [...]
>>>
>>> @@ -2963,7 +2965,7 @@ static unsigned int ata_scsi_pass_thru(struct
>>> ata_queued_cmd *qc)
>>>                          tf->hob_lbal = cdb[7];
>>>                          tf->hob_lbam = cdb[9];
>>>                          tf->hob_lbah = cdb[11];
>>> -                       tf->flags |= ATA_TFLAG_LBA48;
>>> +                       tf->flags |= (ATA_TFLAG_LBA48 | ATA_TFLAG_LBA);
>>
>>
>>     Parens not needed here.
> That's quite neat :-) Thanks, will change it in V2.

     Looking at this hunk again, it seems an unrelated change.

MBR, Sergei

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