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| author | Bart Van Assche <bvanassche@acm.org> | 2022-04-20 00:58:11 +0200 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2022-04-26 05:23:04 +0200 |
| commit | a8b032b5b3ba4e9d8ecb913724d0725121445b24 (patch) | |
| tree | fe2a80ba4398f80968d1131598c79962f5213fab /drivers/scsi/ufs/ufshcd-priv.h | |
| parent | scsi: ufs: Move the struct ufs_ref_clk definition (diff) | |
| download | linux-a8b032b5b3ba4e9d8ecb913724d0725121445b24.tar.xz linux-a8b032b5b3ba4e9d8ecb913724d0725121445b24.zip | |
scsi: ufs: Move the ufs_is_valid_unit_desc_lun() definition
Move the definition of this function from a public into a private header
file since it is only used inside the UFS core.
Link: https://lore.kernel.org/r/20220419225811.4127248-29-bvanassche@acm.org
Tested-by: Bean Huo <beanhuo@micron.com>
Reviewed-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to '')
| -rw-r--r-- | drivers/scsi/ufs/ufshcd-priv.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/scsi/ufs/ufshcd-priv.h b/drivers/scsi/ufs/ufshcd-priv.h index 3fa8ab94e4e1..38bc77d3dbbd 100644 --- a/drivers/scsi/ufs/ufshcd-priv.h +++ b/drivers/scsi/ufs/ufshcd-priv.h @@ -276,4 +276,23 @@ static inline int ufshcd_rpm_put(struct ufs_hba *hba) return pm_runtime_put(&hba->ufs_device_wlun->sdev_gendev); } +/** + * ufs_is_valid_unit_desc_lun - checks if the given LUN has a unit descriptor + * @dev_info: pointer of instance of struct ufs_dev_info + * @lun: LU number to check + * @return: true if the lun has a matching unit descriptor, false otherwise + */ +static inline bool ufs_is_valid_unit_desc_lun(struct ufs_dev_info *dev_info, + u8 lun, u8 param_offset) +{ + if (!dev_info || !dev_info->max_lu_supported) { + pr_err("Max General LU supported by UFS isn't initialized\n"); + return false; + } + /* WB is available only for the logical unit from 0 to 7 */ + if (param_offset == UNIT_DESC_PARAM_WB_BUF_ALLOC_UNITS) + return lun < UFS_UPIU_MAX_WB_LUN_ID; + return lun == UFS_UPIU_RPMB_WLUN || (lun < dev_info->max_lu_supported); +} + #endif /* _UFSHCD_PRIV_H_ */ |