linux-kernel - [PATCH v2 4/6] staging: vt6656: Change macro to function and moved to better file

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Date:   Mon, 21 Feb 2022 22:25:16 +0100
From:   Philipp Hortmann <philipp.g.hortmann@...il.com>
To:     Forest Bond <forest@...ttletooquiet.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: [PATCH v2 4/6] staging: vt6656: Change macro to function and moved
 to better file

This patch fixes the checkpatch.pl warning like:
- CHECK: Macro argument reuse 'uVar' - possible side-effects?
Moved the only twice used function to the file where it is used.

Signed-off-by: Philipp Hortmann <philipp.g.hortmann@...il.com>
---
V1 -> V2: Devided patch into three
---
 drivers/staging/vt6656/device.h |  7 -------
 drivers/staging/vt6656/wcmd.c   | 13 +++++++++++--
 2 files changed, 11 insertions(+), 9 deletions(-)

diff --git a/drivers/staging/vt6656/device.h b/drivers/staging/vt6656/device.h
index 0ab2d60204e8..ca974d61d3f4 100644
--- a/drivers/staging/vt6656/device.h
+++ b/drivers/staging/vt6656/device.h
@@ -381,13 +381,6 @@ struct vnt_private {
 	struct ieee80211_low_level_stats low_stats;
 };
 
-#define ADD_ONE_WITH_WRAP_AROUND(var, modulo) {	\
-	if ((var) >= ((modulo) - 1))			\
-		(var) = 0;				\
-	else						\
-		(var)++;				\
-}
-
 int vnt_init(struct vnt_private *priv);
 
 #endif
diff --git a/drivers/staging/vt6656/wcmd.c b/drivers/staging/vt6656/wcmd.c
index e8ee2fbee76c..14b8aa587119 100644
--- a/drivers/staging/vt6656/wcmd.c
+++ b/drivers/staging/vt6656/wcmd.c
@@ -31,6 +31,15 @@ static void vnt_cmd_timer_wait(struct vnt_private *priv, unsigned long msecs)
 	schedule_delayed_work(&priv->run_command_work, msecs_to_jiffies(msecs));
 }
 
+static u32 add_one_with_wrap_around(u32 var, u8 modulo)
+{
+	if (var >= (modulo - 1))
+		var = 0;
+	else
+		var++;
+	return var;
+}
+
 static int vnt_cmd_complete(struct vnt_private *priv)
 {
 	priv->command_state = WLAN_CMD_IDLE;
@@ -42,7 +51,7 @@ static int vnt_cmd_complete(struct vnt_private *priv)
 
 	priv->command = priv->cmd_queue[priv->cmd_dequeue_idx];
 
-	ADD_ONE_WITH_WRAP_AROUND(priv->cmd_dequeue_idx, CMD_Q_SIZE);
+	priv->cmd_dequeue_idx = add_one_with_wrap_around(priv->cmd_dequeue_idx, CMD_Q_SIZE);
 	priv->free_cmd_queue++;
 	priv->cmd_running = true;
 
@@ -157,7 +166,7 @@ int vnt_schedule_command(struct vnt_private *priv, enum vnt_cmd command)
 
 	priv->cmd_queue[priv->cmd_enqueue_idx] = command;
 
-	ADD_ONE_WITH_WRAP_AROUND(priv->cmd_enqueue_idx, CMD_Q_SIZE);
+	priv->cmd_enqueue_idx = add_one_with_wrap_around(priv->cmd_enqueue_idx, CMD_Q_SIZE);
 	priv->free_cmd_queue--;
 
 	if (!priv->cmd_running)
-- 
2.25.1