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path: root/drivers/scsi/ufs/ufshcd.c
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Diffstat (limited to 'drivers/scsi/ufs/ufshcd.c')
-rw-r--r--drivers/scsi/ufs/ufshcd.c71
1 files changed, 50 insertions, 21 deletions
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 21c81c1feac5..d25082e573e0 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -1788,7 +1788,8 @@ int ufshcd_copy_query_response(struct ufs_hba *hba, struct ufshcd_lrb *lrbp)
memcpy(&query_res->upiu_res, &lrbp->ucd_rsp_ptr->qr, QUERY_OSF_SIZE);
/* Get the descriptor */
- if (lrbp->ucd_rsp_ptr->qr.opcode == UPIU_QUERY_OPCODE_READ_DESC) {
+ if (hba->dev_cmd.query.descriptor &&
+ lrbp->ucd_rsp_ptr->qr.opcode == UPIU_QUERY_OPCODE_READ_DESC) {
u8 *descp = (u8 *)lrbp->ucd_rsp_ptr +
GENERAL_UPIU_REQUEST_SIZE;
u16 resp_len;
@@ -2195,10 +2196,11 @@ static int ufshcd_comp_devman_upiu(struct ufs_hba *hba, struct ufshcd_lrb *lrbp)
u32 upiu_flags;
int ret = 0;
- if (hba->ufs_version == UFSHCI_VERSION_20)
- lrbp->command_type = UTP_CMD_TYPE_UFS_STORAGE;
- else
+ if ((hba->ufs_version == UFSHCI_VERSION_10) ||
+ (hba->ufs_version == UFSHCI_VERSION_11))
lrbp->command_type = UTP_CMD_TYPE_DEV_MANAGE;
+ else
+ lrbp->command_type = UTP_CMD_TYPE_UFS_STORAGE;
ufshcd_prepare_req_desc_hdr(lrbp, &upiu_flags, DMA_NONE);
if (hba->dev_cmd.type == DEV_CMD_TYPE_QUERY)
@@ -2222,10 +2224,11 @@ static int ufshcd_comp_scsi_upiu(struct ufs_hba *hba, struct ufshcd_lrb *lrbp)
u32 upiu_flags;
int ret = 0;
- if (hba->ufs_version == UFSHCI_VERSION_20)
- lrbp->command_type = UTP_CMD_TYPE_UFS_STORAGE;
- else
+ if ((hba->ufs_version == UFSHCI_VERSION_10) ||
+ (hba->ufs_version == UFSHCI_VERSION_11))
lrbp->command_type = UTP_CMD_TYPE_SCSI;
+ else
+ lrbp->command_type = UTP_CMD_TYPE_UFS_STORAGE;
if (likely(lrbp->cmd)) {
ufshcd_prepare_req_desc_hdr(lrbp, &upiu_flags,
@@ -2864,10 +2867,10 @@ static int __ufshcd_query_descriptor(struct ufs_hba *hba,
goto out_unlock;
}
- hba->dev_cmd.query.descriptor = NULL;
*buf_len = be16_to_cpu(response->upiu_res.length);
out_unlock:
+ hba->dev_cmd.query.descriptor = NULL;
mutex_unlock(&hba->dev_cmd.lock);
out:
ufshcd_release(hba);
@@ -3681,15 +3684,24 @@ static int __ufshcd_uic_hibern8_enter(struct ufs_hba *hba)
ktime_to_us(ktime_sub(ktime_get(), start)), ret);
if (ret) {
+ int err;
+
dev_err(hba->dev, "%s: hibern8 enter failed. ret = %d\n",
__func__, ret);
/*
- * If link recovery fails then return error so that caller
- * don't retry the hibern8 enter again.
+ * If link recovery fails then return error code returned from
+ * ufshcd_link_recovery().
+ * If link recovery succeeds then return -EAGAIN to attempt
+ * hibern8 enter retry again.
*/
- if (ufshcd_link_recovery(hba))
- ret = -ENOLINK;
+ err = ufshcd_link_recovery(hba);
+ if (err) {
+ dev_err(hba->dev, "%s: link recovery failed", __func__);
+ ret = err;
+ } else {
+ ret = -EAGAIN;
+ }
} else
ufshcd_vops_hibern8_notify(hba, UIC_CMD_DME_HIBER_ENTER,
POST_CHANGE);
@@ -3703,7 +3715,7 @@ static int ufshcd_uic_hibern8_enter(struct ufs_hba *hba)
for (retries = UIC_HIBERN8_ENTER_RETRIES; retries > 0; retries--) {
ret = __ufshcd_uic_hibern8_enter(hba);
- if (!ret || ret == -ENOLINK)
+ if (!ret)
goto out;
}
out:
@@ -5909,19 +5921,19 @@ static u32 ufshcd_find_max_sup_active_icc_level(struct ufs_hba *hba,
goto out;
}
- if (hba->vreg_info.vcc)
+ if (hba->vreg_info.vcc && hba->vreg_info.vcc->max_uA)
icc_level = ufshcd_get_max_icc_level(
hba->vreg_info.vcc->max_uA,
POWER_DESC_MAX_ACTV_ICC_LVLS - 1,
&desc_buf[PWR_DESC_ACTIVE_LVLS_VCC_0]);
- if (hba->vreg_info.vccq)
+ if (hba->vreg_info.vccq && hba->vreg_info.vccq->max_uA)
icc_level = ufshcd_get_max_icc_level(
hba->vreg_info.vccq->max_uA,
icc_level,
&desc_buf[PWR_DESC_ACTIVE_LVLS_VCCQ_0]);
- if (hba->vreg_info.vccq2)
+ if (hba->vreg_info.vccq2 && hba->vreg_info.vccq2->max_uA)
icc_level = ufshcd_get_max_icc_level(
hba->vreg_info.vccq2->max_uA,
icc_level,
@@ -6523,6 +6535,15 @@ static int ufshcd_config_vreg_load(struct device *dev, struct ufs_vreg *vreg,
if (!vreg)
return 0;
+ /*
+ * "set_load" operation shall be required on those regulators
+ * which specifically configured current limitation. Otherwise
+ * zero max_uA may cause unexpected behavior when regulator is
+ * enabled or set as high power mode.
+ */
+ if (!vreg->max_uA)
+ return 0;
+
ret = regulator_set_load(vreg->reg, ua);
if (ret < 0) {
dev_err(dev, "%s: %s set load (ua=%d) failed, err=%d\n",
@@ -6569,12 +6590,15 @@ static int ufshcd_config_vreg(struct device *dev,
name = vreg->name;
if (regulator_count_voltages(reg) > 0) {
- min_uV = on ? vreg->min_uV : 0;
- ret = regulator_set_voltage(reg, min_uV, vreg->max_uV);
- if (ret) {
- dev_err(dev, "%s: %s set voltage failed, err=%d\n",
+ if (vreg->min_uV && vreg->max_uV) {
+ min_uV = on ? vreg->min_uV : 0;
+ ret = regulator_set_voltage(reg, min_uV, vreg->max_uV);
+ if (ret) {
+ dev_err(dev,
+ "%s: %s set voltage failed, err=%d\n",
__func__, name, ret);
- goto out;
+ goto out;
+ }
}
uA_load = on ? vreg->max_uA : 0;
@@ -7520,6 +7544,8 @@ out:
trace_ufshcd_system_resume(dev_name(hba->dev), ret,
ktime_to_us(ktime_sub(ktime_get(), start)),
hba->curr_dev_pwr_mode, hba->uic_link_state);
+ if (!ret)
+ hba->is_sys_suspended = false;
return ret;
}
EXPORT_SYMBOL(ufshcd_system_resume);
@@ -7738,6 +7764,9 @@ int ufshcd_shutdown(struct ufs_hba *hba)
{
int ret = 0;
+ if (!hba->is_powered)
+ goto out;
+
if (ufshcd_is_ufs_dev_poweroff(hba) && ufshcd_is_link_off(hba))
goto out;
generated by cgit v1.2.3 (git 2.0.4) at 2024-06-08 16:38:43 +0000