linux-kernel - [PATCH 3/3] crypto: hisilicon/qm

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Date: Sat, 27 Jan 2024 21:15:30 +0800
From: Weili Qian <qianweili@...wei.com>
To: <herbert@...dor.apana.org.au>
CC: <linux-crypto@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<liulongfang@...wei.com>
Subject: [PATCH 3/3] crypto: hisilicon/qm - change function type to void

The function hisi_qm_stop_qp() always returns zero, and no caller
checks the return value. So this function type is changed to void.

Signed-off-by: Weili Qian <qianweili@...wei.com>
---
 drivers/crypto/hisilicon/qm.c | 36 ++++++++++-------------------------
 include/linux/hisi_acc_qm.h   |  2 +-
 2 files changed, 11 insertions(+), 27 deletions(-)

diff --git a/drivers/crypto/hisilicon/qm.c b/drivers/crypto/hisilicon/qm.c
index 75d0b2ea117e..d1fe2de0faa7 100644
--- a/drivers/crypto/hisilicon/qm.c
+++ b/drivers/crypto/hisilicon/qm.c
@@ -2118,7 +2118,7 @@ static int qm_drain_qp(struct hisi_qp *qp)
 	return ret;
 }
 
-static int qm_stop_qp_nolock(struct hisi_qp *qp)
+static void qm_stop_qp_nolock(struct hisi_qp *qp)
 {
 	struct hisi_qm *qm = qp->qm;
 	struct device *dev = &qm->pdev->dev;
@@ -2132,7 +2132,7 @@ static int qm_stop_qp_nolock(struct hisi_qp *qp)
 	 */
 	if (atomic_read(&qp->qp_status.flags) != QP_START) {
 		qp->is_resetting = false;
-		return 0;
+		return;
 	}
 
 	atomic_set(&qp->qp_status.flags, QP_STOP);
@@ -2149,8 +2149,6 @@ static int qm_stop_qp_nolock(struct hisi_qp *qp)
 		qp_stop_fail_cb(qp);
 
 	dev_dbg(dev, "stop queue %u!", qp->qp_id);
-
-	return 0;
 }
 
 /**
@@ -2159,15 +2157,11 @@ static int qm_stop_qp_nolock(struct hisi_qp *qp)
  *
  * This function is reverse of hisi_qm_start_qp. Return 0 if successful.
  */
-int hisi_qm_stop_qp(struct hisi_qp *qp)
+void hisi_qm_stop_qp(struct hisi_qp *qp)
 {
-	int ret;
-
 	down_write(&qp->qm->qps_lock);
-	ret = qm_stop_qp_nolock(qp);
+	qm_stop_qp_nolock(qp);
 	up_write(&qp->qm->qps_lock);
-
-	return ret;
 }
 EXPORT_SYMBOL_GPL(hisi_qm_stop_qp);
 
@@ -3109,25 +3103,18 @@ static int qm_restart(struct hisi_qm *qm)
 }
 
 /* Stop started qps in reset flow */
-static int qm_stop_started_qp(struct hisi_qm *qm)
+static void qm_stop_started_qp(struct hisi_qm *qm)
 {
-	struct device *dev = &qm->pdev->dev;
 	struct hisi_qp *qp;
-	int i, ret;
+	int i;
 
 	for (i = 0; i < qm->qp_num; i++) {
 		qp = &qm->qp_array[i];
-		if (qp && atomic_read(&qp->qp_status.flags) == QP_START) {
+		if (atomic_read(&qp->qp_status.flags) == QP_START) {
 			qp->is_resetting = true;
-			ret = qm_stop_qp_nolock(qp);
-			if (ret < 0) {
-				dev_err(dev, "Failed to stop qp%d!\n", i);
-				return ret;
-			}
+			qm_stop_qp_nolock(qp);
 		}
 	}
-
-	return 0;
 }
 
 /**
@@ -3190,11 +3177,8 @@ int hisi_qm_stop(struct hisi_qm *qm, enum qm_stop_reason r)
 			}
 		}
 
-		ret = qm_stop_started_qp(qm);
-		if (ret < 0) {
-			dev_err(dev, "Failed to stop started qp!\n");
-			goto err_unlock;
-		}
+		qm_stop_started_qp(qm);
+
 		hisi_qm_set_hw_reset(qm, QM_RESET_STOP_RX_OFFSET);
 	}
 
diff --git a/include/linux/hisi_acc_qm.h b/include/linux/hisi_acc_qm.h
index ec5a70ade511..3c755626ca54 100644
--- a/include/linux/hisi_acc_qm.h
+++ b/include/linux/hisi_acc_qm.h
@@ -539,7 +539,7 @@ void hisi_qm_uninit(struct hisi_qm *qm);
 int hisi_qm_start(struct hisi_qm *qm);
 int hisi_qm_stop(struct hisi_qm *qm, enum qm_stop_reason r);
 int hisi_qm_start_qp(struct hisi_qp *qp, unsigned long arg);
-int hisi_qm_stop_qp(struct hisi_qp *qp);
+void hisi_qm_stop_qp(struct hisi_qp *qp);
 int hisi_qp_send(struct hisi_qp *qp, const void *msg);
 void hisi_qm_debug_init(struct hisi_qm *qm);
 void hisi_qm_debug_regs_clear(struct hisi_qm *qm);
-- 
2.33.0