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SubjectRE: [PATCH v1] scsi: ufs-mediatek: fix HOST_PA_TACTIVATE quirk for Samsung UFS Devices
Date

>
> Device quirk "UFS_DEVICE_QUIRK_HOST_PA_TACTIVATE" is enabled for all
> Samsung devices by default currently.
>
> However MediaTek UFS host requires different host's PA_TACTIVATE
> configuration. Hence clear this quirk first and then apply vendor-specific
> value in vops callback.
>
> Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Reviewed-by: Avri Altman <avri.altman@wdc.com>

> ---
> drivers/scsi/ufs/ufs-mediatek.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/scsi/ufs/ufs-mediatek.c b/drivers/scsi/ufs/ufs-mediatek.c
> index de650822c9d9..3b0e575d7460 100644
> --- a/drivers/scsi/ufs/ufs-mediatek.c
> +++ b/drivers/scsi/ufs/ufs-mediatek.c
> @@ -533,8 +533,10 @@ static int ufs_mtk_apply_dev_quirks(struct ufs_hba
> *hba)
> struct ufs_dev_info *dev_info = &hba->dev_info;
> u16 mid = dev_info->wmanufacturerid;
>
> - if (mid == UFS_VENDOR_SAMSUNG)
> + if (mid == UFS_VENDOR_SAMSUNG) {
> + hba->dev_quirks &= ~UFS_DEVICE_QUIRK_HOST_PA_TACTIVATE;
> ufshcd_dme_set(hba, UIC_ARG_MIB(PA_TACTIVATE), 6);
> + }
>
> /*
> * Decide waiting time before gating reference clock and
> --
> 2.18.0

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