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

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Date:	Sat, 17 Oct 2015 15:00:44 +0300
From:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:	vinayak.kale@...il.com, tj@...nel.org, linux-ide@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc:	sumit.g.gupta@...gate.com, Vinayak Kale <vinayak.kale@...gate.com>
Subject: Re: [PATCH] libata: add support for NCQ commands for SG interface

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.

[...]

MBR, Sergei

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