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Subject: Re: [PATCH] scsi: hisi_sas: Fix build error without SATA_HOST
To:     YueHaibing <yuehaibing@huawei.com>, <jejb@linux.ibm.com>,
        <martin.petersen@oracle.com>, <chenxiang66@hisilicon.com>
CC:     <linux-scsi@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>,
        <linux-ide@vger.kernel.org>
References: <20200402063021.34672-1-yuehaibing@huawei.com>
From:   John Garry <john.garry@huawei.com>
Message-ID: <855fee9e-ae2d-ca70-8630-df27a273e6f3@huawei.com>
Date:   Thu, 2 Apr 2020 08:30:42 +0100
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On 02/04/2020 07:30, YueHaibing wrote:

+

> If SATA_HOST is n, build fails:
> 
> drivers/scsi/hisi_sas/hisi_sas_main.o: In function `hisi_sas_fill_ata_reset_cmd':
> hisi_sas_main.c:(.text+0x2500): undefined reference to `ata_tf_to_fis'
> 
> Select SATA_HOST to fix this.
> 
> Reported-by: Hulk Robot <hulkci@huawei.com>
> Fixes: 7c594f0407de ("scsi: hisi_sas: add softreset function for SATA disk")

That's not right. SATA_HOST was only introduced recently in the ATA 
code. It would fix those kconfig changes.

> Signed-off-by: YueHaibing <yuehaibing@huawei.com>
> ---
>   drivers/scsi/hisi_sas/Kconfig | 1 +
>   1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/scsi/hisi_sas/Kconfig b/drivers/scsi/hisi_sas/Kconfig
> index 90a17452a50d..13ed9073fc72 100644
> --- a/drivers/scsi/hisi_sas/Kconfig
> +++ b/drivers/scsi/hisi_sas/Kconfig
> @@ -6,6 +6,7 @@ config SCSI_HISI_SAS
>   	select SCSI_SAS_LIBSAS
>   	select BLK_DEV_INTEGRITY
>   	depends on ATA
> +	select SATA_HOST

That does not feel right.

SCSI_HISI_SAS depends on ATA, but SATA_HOST also depends on ATA, so it 
seems better to just depend on SATA_HOST (and omit explicit ATA 
dependency), rather than select it.

Thanks,
John