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Subject[PATCH v4 2/2] ufs: sysfs: Resume the proper scsi device
Date
Resumes the actual scsi device the unit descriptor of which
is being accessed instead of the hba alone.

Signed-off-by: Asutosh Das <asutoshd@codeaurora.org>
---
drivers/scsi/ufs/ufs-sysfs.c | 26 +++++++++++++++-----------
1 file changed, 15 insertions(+), 11 deletions(-)

diff --git a/drivers/scsi/ufs/ufs-sysfs.c b/drivers/scsi/ufs/ufs-sysfs.c
index acc54f5..34481e3 100644
--- a/drivers/scsi/ufs/ufs-sysfs.c
+++ b/drivers/scsi/ufs/ufs-sysfs.c
@@ -297,10 +297,10 @@ static ssize_t ufs_sysfs_read_desc_param(struct ufs_hba *hba,
goto out;
}

- pm_runtime_get_sync(hba->dev);
+ scsi_autopm_get_device(hba->sdev_ufs_device);
ret = ufshcd_read_desc_param(hba, desc_id, desc_index,
param_offset, desc_buf, param_size);
- pm_runtime_put_sync(hba->dev);
+ scsi_autopm_put_device(hba->sdev_ufs_device);
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); \
+ scsi_autopm_get_device(hba->sdev_ufs_device); \
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); \
+ scsi_autopm_put_device(hba->sdev_ufs_device); \
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); \
+ scsi_autopm_get_device(hba->sdev_ufs_device); \
ret = ufshcd_query_flag(hba, UPIU_QUERY_OPCODE_READ_FLAG, \
QUERY_FLAG_IDN##_uname, index, &flag); \
- pm_runtime_put_sync(hba->dev); \
+ scsi_autopm_put_device(hba->sdev_ufs_device); \
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); \
+ scsi_autopm_get_device(hba->sdev_ufs_device); \
ret = ufshcd_query_attr(hba, UPIU_QUERY_OPCODE_READ_ATTR, \
QUERY_ATTR_IDN##_uname, index, 0, &value); \
- pm_runtime_put_sync(hba->dev); \
+ scsi_autopm_put_device(hba->sdev_ufs_device); \
if (ret) { \
ret = -EINVAL; \
goto out; \
@@ -899,11 +899,15 @@ static ssize_t _pname##_show(struct device *dev, \
struct scsi_device *sdev = to_scsi_device(dev); \
struct ufs_hba *hba = shost_priv(sdev->host); \
u8 lun = ufshcd_scsi_to_upiu_lun(sdev->lun); \
+ int ret; \
if (!ufs_is_valid_unit_desc_lun(&hba->dev_info, lun, \
_duname##_DESC_PARAM##_puname)) \
return -EINVAL; \
- return ufs_sysfs_read_desc_param(hba, QUERY_DESC_IDN_##_duname, \
+ scsi_autopm_get_device(sdev); \
+ ret = ufs_sysfs_read_desc_param(hba, QUERY_DESC_IDN_##_duname, \
lun, _duname##_DESC_PARAM##_puname, buf, _size); \
+ scsi_autopm_put_device(sdev); \
+ return ret; \
} \
static DEVICE_ATTR_RO(_pname)

@@ -964,10 +968,10 @@ static ssize_t dyn_cap_needed_attribute_show(struct device *dev,
goto out;
}

- pm_runtime_get_sync(hba->dev);
+ scsi_autopm_get_device(hba->sdev_ufs_device);
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);
+ scsi_autopm_put_device(hba->sdev_ufs_device);
if (ret) {
ret = -EINVAL;
goto out;
--
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