linux-kernel - Re: [PATCH v18 2/2] ufs: sysfs: Resume the proper scsi device

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Date:   Thu, 15 Apr 2021 12:21:52 +0300
From:   Adrian Hunter <adrian.hunter@...el.com>
To:     Asutosh Das <asutoshd@...eaurora.org>, cang@...eaurora.org,
        martin.petersen@...cle.com, linux-scsi@...r.kernel.org
Cc:     linux-arm-msm@...r.kernel.org,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Avri Altman <avri.altman@....com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        Stanley Chu <stanley.chu@...iatek.com>,
        Bean Huo <beanhuo@...ron.com>, Yue Hu <huyue2@...ong.com>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v18 2/2] ufs: sysfs: Resume the proper scsi device

On 14/04/21 9:58 pm, Asutosh Das wrote:
> Resumes the actual scsi device the unit descriptor of which
> is being accessed instead of the hba alone.
> 
> Reviewed-by: Can Guo <cang@...eaurora.org>
> Signed-off-by: Asutosh Das <asutoshd@...eaurora.org>

Reviewed-by: Adrian Hunter <adrian.hunter@...el.com>

> ---
>  drivers/scsi/ufs/ufs-sysfs.c | 24 ++++++++++++------------
>  1 file changed, 12 insertions(+), 12 deletions(-)
> 
> diff --git a/drivers/scsi/ufs/ufs-sysfs.c b/drivers/scsi/ufs/ufs-sysfs.c
> index d7c3cff..4d9d4d8 100644
> --- a/drivers/scsi/ufs/ufs-sysfs.c
> +++ b/drivers/scsi/ufs/ufs-sysfs.c
> @@ -245,9 +245,9 @@ static ssize_t wb_on_store(struct device *dev, struct device_attribute *attr,
>  		goto out;
>  	}
>  
> -	pm_runtime_get_sync(hba->dev);
> +	ufshcd_rpm_get_sync(hba);
>  	res = ufshcd_wb_toggle(hba, wb_enable);
> -	pm_runtime_put_sync(hba->dev);
> +	ufshcd_rpm_put_sync(hba);
>  out:
>  	up(&hba->host_sem);
>  	return res < 0 ? res : count;
> @@ -297,10 +297,10 @@ static ssize_t ufs_sysfs_read_desc_param(struct ufs_hba *hba,
>  		goto out;
>  	}
>  
> -	pm_runtime_get_sync(hba->dev);
> +	ufshcd_rpm_get_sync(hba);
>  	ret = ufshcd_read_desc_param(hba, desc_id, desc_index,
>  				param_offset, desc_buf, param_size);
> -	pm_runtime_put_sync(hba->dev);
> +	ufshcd_rpm_put_sync(hba);
>  	if (ret) {
>  		ret = -EINVAL;
>  		goto out;
> @@ -678,7 +678,7 @@ static ssize_t _name##_show(struct device *dev,				\
>  		up(&hba->host_sem);					\
>  		return -ENOMEM;						\
>  	}								\
> -	pm_runtime_get_sync(hba->dev);					\
> +	ufshcd_rpm_get_sync(hba);					\
>  	ret = ufshcd_query_descriptor_retry(hba,			\
>  		UPIU_QUERY_OPCODE_READ_DESC, QUERY_DESC_IDN_DEVICE,	\
>  		0, 0, desc_buf, &desc_len);				\
> @@ -695,7 +695,7 @@ static ssize_t _name##_show(struct device *dev,				\
>  		goto out;						\
>  	ret = sysfs_emit(buf, "%s\n", desc_buf);			\
>  out:									\
> -	pm_runtime_put_sync(hba->dev);					\
> +	ufshcd_rpm_put_sync(hba);					\
>  	kfree(desc_buf);						\
>  	up(&hba->host_sem);						\
>  	return ret;							\
> @@ -744,10 +744,10 @@ static ssize_t _name##_show(struct device *dev,				\
>  	}								\
>  	if (ufshcd_is_wb_flags(QUERY_FLAG_IDN##_uname))			\
>  		index = ufshcd_wb_get_query_index(hba);			\
> -	pm_runtime_get_sync(hba->dev);					\
> +	ufshcd_rpm_get_sync(hba);					\
>  	ret = ufshcd_query_flag(hba, UPIU_QUERY_OPCODE_READ_FLAG,	\
>  		QUERY_FLAG_IDN##_uname, index, &flag);			\
> -	pm_runtime_put_sync(hba->dev);					\
> +	ufshcd_rpm_put_sync(hba);					\
>  	if (ret) {							\
>  		ret = -EINVAL;						\
>  		goto out;						\
> @@ -813,10 +813,10 @@ static ssize_t _name##_show(struct device *dev,				\
>  	}								\
>  	if (ufshcd_is_wb_attrs(QUERY_ATTR_IDN##_uname))			\
>  		index = ufshcd_wb_get_query_index(hba);			\
> -	pm_runtime_get_sync(hba->dev);					\
> +	ufshcd_rpm_get_sync(hba);					\
>  	ret = ufshcd_query_attr(hba, UPIU_QUERY_OPCODE_READ_ATTR,	\
>  		QUERY_ATTR_IDN##_uname, index, 0, &value);		\
> -	pm_runtime_put_sync(hba->dev);					\
> +	ufshcd_rpm_put_sync(hba);					\
>  	if (ret) {							\
>  		ret = -EINVAL;						\
>  		goto out;						\
> @@ -964,10 +964,10 @@ static ssize_t dyn_cap_needed_attribute_show(struct device *dev,
>  		goto out;
>  	}
>  
> -	pm_runtime_get_sync(hba->dev);
> +	ufshcd_rpm_get_sync(hba);
>  	ret = ufshcd_query_attr(hba, UPIU_QUERY_OPCODE_READ_ATTR,
>  		QUERY_ATTR_IDN_DYN_CAP_NEEDED, lun, 0, &value);
> -	pm_runtime_put_sync(hba->dev);
> +	ufshcd_rpm_put_sync(hba);
>  	if (ret) {
>  		ret = -EINVAL;
>  		goto out;
>