linux-kernel - Re: [PATCH] scsi: ufs-mediatek: add dependency for RESET

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Date:   Wed, 7 Jun 2023 10:17:22 -0700
From:   Bart Van Assche <bvanassche@....org>
To:     Randy Dunlap <rdunlap@...radead.org>, linux-kernel@...r.kernel.org
Cc:     kernel test robot <lkp@...el.com>,
        Stanley Chu <stanley.chu@...iatek.com>,
        Peter Wang <peter.wang@...iatek.com>,
        Paul Gazzillo <paul@...zz.com>,
        Necip Fazil Yildiran <fazilyildiran@...il.com>,
        linux-scsi@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>
Subject: Re: [PATCH] scsi: ufs-mediatek: add dependency for RESET_CONTROLLER

On 6/1/23 19:39, Randy Dunlap wrote:
> When RESET_CONTROLLER is not set, kconfig complains about missing
> dependencies for RESET_TI_SYSCON, so add the missing dependency
> just as is done above for SCSI_UFS_QCOM.
> 
> Silences this kconfig warning:
> 
> WARNING: unmet direct dependencies detected for RESET_TI_SYSCON
>    Depends on [n]: RESET_CONTROLLER [=n] && HAS_IOMEM [=y]
>    Selected by [m]:
>    - SCSI_UFS_MEDIATEK [=m] && SCSI_UFSHCD [=y] && SCSI_UFSHCD_PLATFORM [=y] && ARCH_MEDIATEK [=y]
> 
> Fixes: de48898d0cb6 ("scsi: ufs-mediatek: Create reset control device_link")
> Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
> Reported-by: kernel test robot <lkp@...el.com>
> Link: lore.kernel.org/r/202306020859.1wHg9AaT-lkp@...el.com
> Cc: Stanley Chu <stanley.chu@...iatek.com>
> Cc: Peter Wang <peter.wang@...iatek.com>
> Cc: Paul Gazzillo <paul@...zz.com>
> Cc: Necip Fazil Yildiran <fazilyildiran@...il.com>
> Cc: linux-scsi@...r.kernel.org
> Cc: linux-arm-kernel@...ts.infradead.org
> Cc: linux-mediatek@...ts.infradead.org
> Cc: "James E.J. Bottomley" <jejb@...ux.ibm.com>
> Cc: "Martin K. Petersen" <martin.petersen@...cle.com>
> ---
>   drivers/ufs/host/Kconfig |    1 +
>   1 file changed, 1 insertion(+)
> 
> diff -- a/drivers/ufs/host/Kconfig b/drivers/ufs/host/Kconfig
> --- a/drivers/ufs/host/Kconfig
> +++ b/drivers/ufs/host/Kconfig
> @@ -72,6 +72,7 @@ config SCSI_UFS_QCOM
>   config SCSI_UFS_MEDIATEK
>   	tristate "Mediatek specific hooks to UFS controller platform driver"
>   	depends on SCSI_UFSHCD_PLATFORM && ARCH_MEDIATEK
> +	depends on RESET_CONTROLLER
>   	select PHY_MTK_UFS
>   	select RESET_TI_SYSCON
>   	help

Hmm ... is the above patch complete? Shouldn't a similar dependency be
added to the ufs-hisi and ufs-sprd drivers? See also the following git
grep output:

$ git grep -nH 'include.*linux/reset.h' */ufs
drivers/ufs/host/ufs-hisi.c:16:#include <linux/reset.h>
drivers/ufs/host/ufs-mediatek.c:21:#include <linux/reset.h>
drivers/ufs/host/ufs-qcom.h:9:#include <linux/reset.h>
drivers/ufs/host/ufs-sprd.c:14:#include <linux/reset.h>

Thanks,

Bart.