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UPSTREAM: scsi: ufs: ufshpb: Merge ufshpb_reset() and ufshpb_reset_host()

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There is no functional change in this patch, just merge ufshpb_reset() and
ufshpb_reset_host() into one function ufshpb_toggle_state().

Link: https://lore.kernel.org/r/20220505134707.35929-2-huobean@gmail.com
Reviewed-by: Keoseong Park <keosung.park@samsung.com>
Signed-off-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Bug: 234653003
(cherry picked from commit facc239c87)
Change-Id: I88837545b7af1664c6accbec957b8dcaf4d23a3b
Signed-off-by: Bart Van Assche <bvanassche@google.com>
This commit is contained in:
Bean Huo
2022-05-05 15:47:02 +02:00
committed by Bart Van Assche
parent 92cf8c285a
commit 50460bbd71
3 changed files with 18 additions and 30 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/scsi/ufs/ufshcd.c
View File

@@ -7298,7 +7298,7 @@ static int ufshcd_host_reset_and_restore(struct ufs_hba *hba)
* Stop the host controller and complete the requests
* cleared by h/w
*/
ufshpb_reset_host(hba);
ufshpb_toggle_state(hba, HPB_PRESENT, HPB_RESET);
ufshcd_hba_stop(hba);
hba->silence_err_logs = true;
ufshcd_complete_requests(hba);
@@ -8265,7 +8265,7 @@ static int ufshcd_probe_hba(struct ufs_hba *hba, bool init_dev_params)
/* Enable Auto-Hibernate if configured */
ufshcd_auto_hibern8_enable(hba);
ufshpb_reset(hba);
ufshpb_toggle_state(hba, HPB_RESET, HPB_PRESENT);
out:
spin_lock_irqsave(hba->host->host_lock, flags);
if (ret)

38
drivers/scsi/ufs/ufshpb.c
View File

@@ -2272,38 +2272,28 @@ out:
return flag_res;
}
void ufshpb_reset(struct ufs_hba *hba)
/**
* ufshpb_toggle_state - switch HPB state of all LUs
* @hba: per-adapter instance
* @src: expected current HPB state
* @dest: target HPB state to switch to
*/
void ufshpb_toggle_state(struct ufs_hba *hba, enum UFSHPB_STATE src, enum UFSHPB_STATE dest)
{
struct ufshpb_lu *hpb;
struct scsi_device *sdev;
shost_for_each_device(sdev, hba->host) {
hpb = ufshpb_get_hpb_data(sdev);
if (!hpb)
if (!hpb || ufshpb_get_state(hpb) != src)
continue;
ufshpb_set_state(hpb, dest);
if (ufshpb_get_state(hpb) != HPB_RESET)
continue;
ufshpb_set_state(hpb, HPB_PRESENT);
}
}
void ufshpb_reset_host(struct ufs_hba *hba)
{
struct ufshpb_lu *hpb;
struct scsi_device *sdev;
shost_for_each_device(sdev, hba->host) {
hpb = ufshpb_get_hpb_data(sdev);
if (!hpb)
continue;
if (ufshpb_get_state(hpb) != HPB_PRESENT)
continue;
ufshpb_set_state(hpb, HPB_RESET);
ufshpb_cancel_jobs(hpb);
ufshpb_discard_rsp_lists(hpb);
if (dest == HPB_RESET) {
ufshpb_cancel_jobs(hpb);
ufshpb_discard_rsp_lists(hpb);
}
}
}

6
drivers/scsi/ufs/ufshpb.h
View File

@@ -288,8 +288,7 @@ static int ufshpb_prep(struct ufs_hba *hba, struct ufshcd_lrb *lrbp) { return 0;
static void ufshpb_rsp_upiu(struct ufs_hba *hba, struct ufshcd_lrb *lrbp) {}
static void ufshpb_resume(struct ufs_hba *hba) {}
static void ufshpb_suspend(struct ufs_hba *hba) {}
static void ufshpb_reset(struct ufs_hba *hba) {}
static void ufshpb_reset_host(struct ufs_hba *hba) {}
static void ufshpb_toggle_state(struct ufs_hba *hba, enum UFSHPB_STATE src, enum UFSHPB_STATE dest) {}
static void ufshpb_init(struct ufs_hba *hba) {}
static void ufshpb_init_hpb_lu(struct ufs_hba *hba, struct scsi_device *sdev) {}
static void ufshpb_destroy_lu(struct ufs_hba *hba, struct scsi_device *sdev) {}
@@ -303,8 +302,7 @@ int ufshpb_prep(struct ufs_hba *hba, struct ufshcd_lrb *lrbp);
void ufshpb_rsp_upiu(struct ufs_hba *hba, struct ufshcd_lrb *lrbp);
void ufshpb_resume(struct ufs_hba *hba);
void ufshpb_suspend(struct ufs_hba *hba);
void ufshpb_reset(struct ufs_hba *hba);
void ufshpb_reset_host(struct ufs_hba *hba);
void ufshpb_toggle_state(struct ufs_hba *hba, enum UFSHPB_STATE src, enum UFSHPB_STATE dest);
void ufshpb_init(struct ufs_hba *hba);
void ufshpb_init_hpb_lu(struct ufs_hba *hba, struct scsi_device *sdev);
void ufshpb_destroy_lu(struct ufs_hba *hba, struct scsi_device *sdev);