linux-kernel - [PATCH] Staging: gdm724x: gdm_tty.c:Fixed Macro argument reuse

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Message-Id: <20180709123632.5682-1-rjdurga@gmail.com>
Date:   Mon,  9 Jul 2018 18:06:32 +0530
From:   Jaya Durga <rjdurga@...il.com>
To:     gregkh@...uxfoundation.org
Cc:     quytelda@...alin.org, deanahn@...semi.com,
        devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: [PATCH] Staging: gdm724x: gdm_tty.c:Fixed Macro argument reuse

From: root <root@...s.chennai.cdac.in>

CHECK: Macro argument reuse 'gdm' - possible side-effects?

convert GDM_TTY_READY to gdm_tty_ready static function
to fix checkpath check

Signed-off-by: Jaya Durga <rjdurga@...il.com>
---
 drivers/staging/gdm724x/gdm_tty.c | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/drivers/staging/gdm724x/gdm_tty.c b/drivers/staging/gdm724x/gdm_tty.c
index bf554f7c56ca..5de1940c1f79 100644
--- a/drivers/staging/gdm724x/gdm_tty.c
+++ b/drivers/staging/gdm724x/gdm_tty.c
@@ -27,7 +27,11 @@
#define MUX_TX_MAX_SIZE 2048
-#define GDM_TTY_READY(gdm) (gdm && gdm->tty_dev && gdm->port.count)
+static unsigned int gdm_tty_ready(struct gdm *gdm)
+{
+return (gdm && gdm->tty_dev && gdm->port.count);
+}
+

static struct tty_driver *gdm_driver[TTY_MAX_COUNT];
static struct gdm *gdm_table[TTY_MAX_COUNT][GDM_TTY_MINOR];
@@ -127,7 +131,7 @@ static int gdm_tty_recv_complete(void *data,
{
 	struct gdm *gdm = tty_dev->gdm[index];
-	if (!GDM_TTY_READY(gdm)) {
+	if (!gdm_tty_ready(gdm)) {
 		if (complete == RECV_PACKET_PROCESS_COMPLETE)
 			gdm->tty_dev->recv_func(gdm->tty_dev->priv_dev,
 						gdm_tty_recv_complete);
@@ -154,7 +158,7 @@ static void gdm_tty_send_complete(void *arg)
 {
 	struct gdm *gdm = arg;
-	if (!GDM_TTY_READY(gdm))
+	if (!gdm_tty_ready(gdm))
 		return;
 	tty_port_tty_wakeup(&gdm->port);
@@ -168,7 +172,7 @@ static int gdm_tty_write(struct tty_struct *tty, const unsigned char *buf,
 	int sent_len = 0;
 	int sending_len = 0;
-	if (!GDM_TTY_READY(gdm))
+	if (!gdm_tty_ready(gdm))
 		return -ENODEV;
 	if (!len)
@@ -195,7 +199,7 @@ static int gdm_tty_write_room(struct tty_struct *tty)
{
 	struct gdm *gdm = tty->driver_data;
-	if (!GDM_TTY_READY(gdm))
+	if (!gdm_tty_ready(gdm))
 		return -ENODEV;
 	return WRITE_SIZE;