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Date: Tue, 24 Jan 2017 11:25:14 +0100
From: SF Markus Elfring <elfring@...rs.sourceforge.net>
To: alsa-devel@...a-project.org, Clemens Ladisch <clemens@...isch.de>,
Jaroslav Kysela <perex@...ex.cz>,
Martin Koegler <martin.koegler@...llo.at>,
Takashi Iwai <tiwai@...e.com>,
Takashi Sakamoto <o-takashi@...amocchi.jp>
Cc: LKML <linux-kernel@...r.kernel.org>,
kernel-janitors@...r.kernel.org
Subject: [PATCH 5/7] ALSA: seq: Adjust 16 function calls together with a
variable assignment
From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Tue, 24 Jan 2017 09:44:22 +0100
The script "checkpatch.pl" pointed information out like the following.
ERROR: do not use assignment in if condition
Thus fix the affected source code places.
Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
sound/core/seq/seq_clientmgr.c | 52 ++++++++++++++++++++++++++++--------------
1 file changed, 35 insertions(+), 17 deletions(-)
diff --git a/sound/core/seq/seq_clientmgr.c b/sound/core/seq/seq_clientmgr.c
index b9518e7cb623..519968841ccc 100644
--- a/sound/core/seq/seq_clientmgr.c
+++ b/sound/core/seq/seq_clientmgr.c
@@ -400,7 +400,11 @@ static ssize_t snd_seq_read(struct file *file, char __user *buf, size_t count,
if (snd_BUG_ON(!client))
return -ENXIO;
- if (!client->accept_input || (fifo = client->data.user.fifo) == NULL)
+ if (!client->accept_input)
+ return -ENXIO;
+
+ fifo = client->data.user.fifo;
+ if (!fifo)
return -ENXIO;
if (atomic_read(&fifo->overflow) > 0) {
@@ -419,9 +423,9 @@ static ssize_t snd_seq_read(struct file *file, char __user *buf, size_t count,
int nonblock;
nonblock = (file->f_flags & O_NONBLOCK) || result > 0;
- if ((err = snd_seq_fifo_cell_out(fifo, &cell, nonblock)) < 0) {
+ err = snd_seq_fifo_cell_out(fifo, &cell, nonblock);
+ if (err < 0)
break;
- }
if (snd_seq_ev_is_variable(&cell->event)) {
struct snd_seq_event tmpev;
tmpev = cell->event;
@@ -948,7 +952,8 @@ static int snd_seq_client_enqueue_event(struct snd_seq_client *client,
return err;
/* we got a cell. enqueue it. */
- if ((err = snd_seq_enqueue_event(cell, atomic, hop)) < 0) {
+ err = snd_seq_enqueue_event(cell, atomic, hop);
+ if (err < 0) {
snd_seq_cell_free(cell);
return err;
}
@@ -1273,7 +1278,8 @@ static int snd_seq_ioctl_create_port(struct snd_seq_client *client, void *arg)
return -EINVAL;
}
if (client->type == KERNEL_CLIENT) {
- if ((callback = info->kernel) != NULL) {
+ callback = info->kernel;
+ if (callback) {
if (callback->owner)
port->owner = callback->owner;
port->private_data = callback->private_data;
@@ -1426,13 +1432,17 @@ static int snd_seq_ioctl_subscribe_port(struct snd_seq_client *client,
struct snd_seq_client *receiver, *sender;
struct snd_seq_client_port *sport, *dport;
- if ((receiver = snd_seq_client_use_ptr(subs->dest.client)) == NULL)
+ receiver = snd_seq_client_use_ptr(subs->dest.client);
+ if (!receiver)
goto exit;
- if ((sender = snd_seq_client_use_ptr(subs->sender.client)) == NULL)
+ sender = snd_seq_client_use_ptr(subs->sender.client);
+ if (!sender)
goto unlock_receiver;
- if ((sport = snd_seq_port_use_ptr(sender, subs->sender.port)) == NULL)
+ sport = snd_seq_port_use_ptr(sender, subs->sender.port);
+ if (!sport)
goto unlock_sender;
- if ((dport = snd_seq_port_use_ptr(receiver, subs->dest.port)) == NULL)
+ dport = snd_seq_port_use_ptr(receiver, subs->dest.port);
+ if (!dport)
goto unlock_sport;
result = check_subscription_permission(client, sport, dport, subs);
@@ -1468,13 +1478,17 @@ static int snd_seq_ioctl_unsubscribe_port(struct snd_seq_client *client,
struct snd_seq_client *receiver, *sender;
struct snd_seq_client_port *sport, *dport;
- if ((receiver = snd_seq_client_use_ptr(subs->dest.client)) == NULL)
+ receiver = snd_seq_client_use_ptr(subs->dest.client);
+ if (!receiver)
goto exit;
- if ((sender = snd_seq_client_use_ptr(subs->sender.client)) == NULL)
+ sender = snd_seq_client_use_ptr(subs->sender.client);
+ if (!sender)
goto unlock_receiver;
- if ((sport = snd_seq_port_use_ptr(sender, subs->sender.port)) == NULL)
+ sport = snd_seq_port_use_ptr(sender, subs->sender.port);
+ if (!sport)
goto unlock_sender;
- if ((dport = snd_seq_port_use_ptr(receiver, subs->dest.port)) == NULL)
+ dport = snd_seq_port_use_ptr(receiver, subs->dest.port);
+ if (!dport)
goto unlock_sport;
result = check_subscription_permission(client, sport, dport, subs);
@@ -1896,9 +1910,11 @@ static int snd_seq_ioctl_get_subscription(struct snd_seq_client *client,
struct snd_seq_client_port *sport;
struct snd_seq_subscribers *p;
- if ((sender = snd_seq_client_use_ptr(subs->sender.client)) == NULL)
+ sender = snd_seq_client_use_ptr(subs->sender.client);
+ if (!sender)
goto exit;
- if ((sport = snd_seq_port_use_ptr(sender, subs->sender.port)) == NULL)
+ sport = snd_seq_port_use_ptr(sender, subs->sender.port);
+ if (!sport)
goto unlock_client;
p = snd_seq_port_get_subscription(&sport->c_src, &subs->dest);
if (p) {
@@ -1928,9 +1944,11 @@ static int snd_seq_ioctl_query_subs(struct snd_seq_client *client, void *arg)
struct list_head *p;
int i;
- if ((cptr = snd_seq_client_use_ptr(subs->root.client)) == NULL)
+ cptr = snd_seq_client_use_ptr(subs->root.client);
+ if (!cptr)
goto exit;
- if ((port = snd_seq_port_use_ptr(cptr, subs->root.port)) == NULL)
+ port = snd_seq_port_use_ptr(cptr, subs->root.port);
+ if (!port)
goto unlock_client;
switch (subs->type) {
--
2.11.0
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