[PATCH v10 11/18] scsi: ufs: Change the return type of ufshcd_auto_hibern8_update()

Bart Van Assche
2023-08-18T19:47:12Z

A later patch will introduce an error path in ufshcd_auto_hibern8_update().
Change the return type of that function before introducing calls to that
function in the host drivers such that the host drivers only have to be
modified once.

Cc: Martin K. Petersen <martin.petersen@oracle.com>
Cc: Can Guo <quic_cang@quicinc.com>
Cc: Avri Altman <avri.altman@wdc.com>
Cc: Bao D. Nguyen <quic_nguyenb@quicinc.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
drivers/ufs/core/ufs-sysfs.c | 2 +-
drivers/ufs/core/ufshcd-priv.h | 1 -
drivers/ufs/core/ufshcd.c | 6 ++++--
include/ufs/ufshcd.h | 2 +-
4 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/ufs/core/ufs-sysfs.c b/drivers/ufs/core/ufs-sysfs.c
index 6c72075750dd..a693dea1bd18 100644
--- a/drivers/ufs/core/ufs-sysfs.c
+++ b/drivers/ufs/core/ufs-sysfs.c
@@ -203,7 +203,7 @@ static ssize_t auto_hibern8_store(struct device *dev,
goto out;
}

- ufshcd_auto_hibern8_update(hba, ufshcd_us_to_ahit(timer));
+ ret = ufshcd_auto_hibern8_update(hba, ufshcd_us_to_ahit(timer));

out:
up(&hba->host_sem);
diff --git a/drivers/ufs/core/ufshcd-priv.h b/drivers/ufs/core/ufshcd-priv.h
index 0f3bd943b58b..a2b74fbc2056 100644
--- a/drivers/ufs/core/ufshcd-priv.h
+++ b/drivers/ufs/core/ufshcd-priv.h
@@ -60,7 +60,6 @@ int ufshcd_query_attr(struct ufs_hba *hba, enum query_opcode opcode,
enum attr_idn idn, u8 index, u8 selector, u32 *attr_val);
int ufshcd_query_flag(struct ufs_hba *hba, enum query_opcode opcode,
enum flag_idn idn, u8 index, bool *flag_res);
-void ufshcd_auto_hibern8_update(struct ufs_hba *hba, u32 ahit);
void ufshcd_compl_one_cqe(struct ufs_hba *hba, int task_tag,
struct cq_entry *cqe);
int ufshcd_mcq_init(struct ufs_hba *hba);
diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c
index 129446775796..053b82eac80f 100644
--- a/drivers/ufs/core/ufshcd.c
+++ b/drivers/ufs/core/ufshcd.c
@@ -4337,13 +4337,13 @@ int ufshcd_uic_hibern8_exit(struct ufs_hba *hba)
}
EXPORT_SYMBOL_GPL(ufshcd_uic_hibern8_exit);

-void ufshcd_auto_hibern8_update(struct ufs_hba *hba, u32 ahit)
+int ufshcd_auto_hibern8_update(struct ufs_hba *hba, u32 ahit)
{
unsigned long flags;
bool update = false;

if (!ufshcd_is_auto_hibern8_supported(hba))
- return;
+ return 0;

spin_lock_irqsave(hba->host->host_lock, flags);
if (hba->ahit != ahit) {
@@ -4360,6 +4360,8 @@ void ufshcd_auto_hibern8_update(struct ufs_hba *hba, u32 ahit)
ufshcd_release(hba);
ufshcd_rpm_put_sync(hba);
}
+
+ return 0;
}
EXPORT_SYMBOL_GPL(ufshcd_auto_hibern8_update);

diff --git a/include/ufs/ufshcd.h b/include/ufs/ufshcd.h
index 6dc11fa0ebb1..ffc6ffe45fe1 100644
--- a/include/ufs/ufshcd.h
+++ b/include/ufs/ufshcd.h
@@ -1364,7 +1364,7 @@ static inline int ufshcd_disable_host_tx_lcc(struct ufs_hba *hba)
}

void ufshcd_auto_hibern8_enable(struct ufs_hba *hba);
-void ufshcd_auto_hibern8_update(struct ufs_hba *hba, u32 ahit);
+int ufshcd_auto_hibern8_update(struct ufs_hba *hba, u32 ahit);
void ufshcd_fixup_dev_quirks(struct ufs_hba *hba,
const struct ufs_dev_quirk *fixups);
#define SD_ASCII_STD true