linux-kernel - Re: [PATCH v3 4/8] scsi: ufs: move ufshcd_get_max_pwr_mode() to ufs_init

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Date:   Sun, 19 Jan 2020 07:17:07 +0530
From:   Alim Akhtar <alim.akhtar@...il.com>
To:     Bean Huo <huobean@...il.com>
Cc:     Alim Akhtar <alim.akhtar@...sung.com>,
        Avri Altman <avri.altman@....com>, asutoshd@...eaurora.org,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Stanley Chu <stanley.chu@...iatek.com>,
        "Bean Huo (beanhuo)" <beanhuo@...ron.com>,
        Bart Van Assche <bvanassche@....org>,
        Tomas Winkler <tomas.winkler@...el.com>,
        Can Guo <cang@...eaurora.org>, linux-scsi@...r.kernel.org,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 4/8] scsi: ufs: move ufshcd_get_max_pwr_mode() to ufs_init_params()

On Sun, Jan 19, 2020 at 5:44 AM Bean Huo <huobean@...il.com> wrote:
>
> From: Bean Huo <beanhuo@...ron.com>
>
> ufshcd_get_max_pwr_mode() only need to be called once while booting,
> take it out from ufshcd_probe_hba() and inline into ufshcd_init_params().
>
This can be safely squash with the previous patch which introduce
ufshcd_init_params.

> Signed-off-by: Bean Huo <beanhuo@...ron.com>
> ---
>  drivers/scsi/ufs/ufshcd.c | 12 +++++++-----
>  1 file changed, 7 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
> index 54c127ef360b..925b31dc3110 100644
> --- a/drivers/scsi/ufs/ufshcd.c
> +++ b/drivers/scsi/ufs/ufshcd.c
> @@ -6959,6 +6959,11 @@ static int ufshcd_init_params(struct ufs_hba *hba)
>                         QUERY_FLAG_IDN_PWR_ON_WPE, &flag))
>                 hba->dev_info.f_power_on_wp_en = flag;
>
> +       /* Probe maximum power mode co-supported by both UFS host and device */
> +       if (ufshcd_get_max_pwr_mode(hba))
> +               dev_err(hba->dev,
> +                       "%s: Failed getting max supported power mode\n",
> +                       __func__);
>  out:
>         return ret;
>  }
> @@ -7057,11 +7062,8 @@ static int ufshcd_probe_hba(struct ufs_hba *hba, bool async)
>         ufshcd_force_reset_auto_bkops(hba);
>         hba->wlun_dev_clr_ua = true;
>
> -       if (ufshcd_get_max_pwr_mode(hba)) {
> -               dev_err(hba->dev,
> -                       "%s: Failed getting max supported power mode\n",
> -                       __func__);
> -       } else {
> +       /* Gear up to HS gear if supported */
> +       if (hba->max_pwr_info.is_valid) {
>                 /*
>                  * Set the right value to bRefClkFreq before attempting to
>                  * switch to HS gears.
> --
> 2.17.1
>


-- 
Regards,
Alim