RDMA/hns: Remove jiffies operation in disable interrupt context

driver inclusion
category: bugfix
bugzilla: NA
CVE: NA

When clear hem，the father function may use spin_lock_irqsave,
then jiffies may not work.
We can use only the xdelay() for delay control.
Signed-off-by: NLang Cheng <chenglang@huawei.com>
Reviewed-by: NHanjun Guo <guohanjun@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>

drivers/infiniband/hw/hns/hns_roce_hem.c

@@ -417,18 +417,19 @@ static int hns_roce_set_hem(struct hns_roce_dev *hr_dev,
 
 		bt_cmd = hr_dev->reg_base + ROCEE_BT_CMD_H_REG;
 
-		end = msecs_to_jiffies(HW_SYNC_TIMEOUT_MSECS) + jiffies;
-		while (1) {
-			if (readl(bt_cmd) >> BT_CMD_SYNC_SHIFT) {
-				if (!(time_before(jiffies, end))) {
-					dev_err(dev, "Write bt_cmd err,hw_sync is not zero.\n");
-					spin_unlock_irqrestore(lock, flags);
-					return -EBUSY;
-				}
-			} else {
+		end = HW_SYNC_TIMEOUT_MSECS;
+		while (end > 0) {
+			if (!(readl(bt_cmd) >> BT_CMD_SYNC_SHIFT))
 				break;
-			}
+
 			mdelay(HW_SYNC_SLEEP_TIME_INTERVAL);
+			end -= HW_SYNC_SLEEP_TIME_INTERVAL;
+		}
+
+		if (end <= 0) {
+			dev_err(dev, "Write bt_cmd err,hw_sync is not zero.\n");
+			spin_unlock_irqrestore(lock, flags);
+			return -EBUSY;
 		}
 
 		bt_cmd_l = cpu_to_le32(bt_ba);

drivers/infiniband/hw/hns/hns_roce_hw_v1.c

@@ -2526,19 +2526,18 @@ static void hns_roce_v1_clear_hem(struct hns_roce_dev *hr_dev,
 
 	bt_cmd = hr_dev->reg_base + ROCEE_BT_CMD_H_REG;
 
-	end = msecs_to_jiffies(HW_SYNC_TIMEOUT_MSECS) + jiffies;
-	while (1) {
-		if (readl(bt_cmd) >> BT_CMD_SYNC_SHIFT) {
-			if (!(time_before(jiffies, end))) {
-				dev_err(dev, "Write bt_cmd err,hw_sync is not zero.\n");
-				spin_unlock_irqrestore(&hr_dev->bt_cmd_lock,
-					flags);
-				return;
-			}
-		} else {
+	end = HW_SYNC_TIMEOUT_MSECS;
+	while (end > 0) {
+		if (!(readl(bt_cmd) >> BT_CMD_SYNC_SHIFT))
 			break;
-		}
-		msleep(HW_SYNC_SLEEP_TIME_INTERVAL);
+
+		mdelay(HW_SYNC_SLEEP_TIME_INTERVAL);
+		end -= HW_SYNC_SLEEP_TIME_INTERVAL;
+	}
+	if (end <= 0) {
+		dev_err(dev, "Write bt_cmd err,hw_sync is not zero.\n");
+		spin_unlock_irqrestore(&hr_dev->bt_cmd_lock, flags);
+		return;
 	}
 
 	bt_cmd_val[0] = cpu_to_le32(bt_ba);