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

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Message-ID: <CACLWs=V_XXAojGmczSQpwvswU_yrWnZSWtih9rTp1hxEEeoQTg@mail.gmail.com>
Date:	Sat, 17 Oct 2015 17:55:57 +0530
From:	Vinayak Kale <vinayak.kale@...il.com>
To:	Sergei Shtylyov <sergei.shtylyov@...entembedded.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 Sat, Oct 17, 2015 at 5:30 PM, Sergei Shtylyov
<sergei.shtylyov@...entembedded.com> wrote:
> Hello.
>
> On 10/17/2015 2:48 PM, vinayak.kale@...il.com 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.
>
> [...]
>
> MBR, Sergei
>
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