diff options
| author | Takashi Iwai <tiwai@suse.de> | 2021-06-08 16:05:30 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2021-06-09 17:30:26 +0200 |
| commit | f9a6bb841f737015aface3ba4ac845e66542850e (patch) | |
| tree | 4ea091922c864e6dbc5b75c4117357f293f1ccf0 /sound/core/seq/oss/seq_oss_midi.c | |
| parent | 51c816fdd17c63352b04e67c6c5ccaa3417f39aa (diff) | |
ALSA: seq: Fix assignment in if condition
There are lots of places doing assignments in if condition in ALSA
sequencer core, which is a bad coding style that may confuse readers
and occasionally lead to bugs.
This patch is merely for coding-style fixes, no functional changes.
Link: https://lore.kernel.org/r/20210608140540.17885-57-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/core/seq/oss/seq_oss_midi.c')
| -rw-r--r-- | sound/core/seq/oss/seq_oss_midi.c | 33 |
1 files changed, 22 insertions, 11 deletions
diff --git a/sound/core/seq/oss/seq_oss_midi.c b/sound/core/seq/oss/seq_oss_midi.c index 3f82c196de46..1e3bf086f867 100644 --- a/sound/core/seq/oss/seq_oss_midi.c +++ b/sound/core/seq/oss/seq_oss_midi.c @@ -152,7 +152,8 @@ snd_seq_oss_midi_check_new_port(struct snd_seq_port_info *pinfo) /* * look for the identical slot */ - if ((mdev = find_slot(pinfo->addr.client, pinfo->addr.port)) != NULL) { + mdev = find_slot(pinfo->addr.client, pinfo->addr.port); + if (mdev) { /* already exists */ snd_use_lock_free(&mdev->use_lock); return 0; @@ -218,7 +219,8 @@ snd_seq_oss_midi_check_exit_port(int client, int port) unsigned long flags; int index; - if ((mdev = find_slot(client, port)) != NULL) { + mdev = find_slot(client, port); + if (mdev) { spin_lock_irqsave(®ister_lock, flags); midi_devs[mdev->seq_device] = NULL; spin_unlock_irqrestore(®ister_lock, flags); @@ -250,7 +252,8 @@ snd_seq_oss_midi_clear_all(void) spin_lock_irqsave(®ister_lock, flags); for (i = 0; i < max_midi_devs; i++) { - if ((mdev = midi_devs[i]) != NULL) { + mdev = midi_devs[i]; + if (mdev) { snd_midi_event_free(mdev->coder); kfree(mdev); midi_devs[i] = NULL; @@ -318,7 +321,8 @@ snd_seq_oss_midi_open(struct seq_oss_devinfo *dp, int dev, int fmode) struct seq_oss_midi *mdev; struct snd_seq_port_subscribe subs; - if ((mdev = get_mididev(dp, dev)) == NULL) + mdev = get_mididev(dp, dev); + if (!mdev) return -ENODEV; /* already used? */ @@ -384,7 +388,8 @@ snd_seq_oss_midi_close(struct seq_oss_devinfo *dp, int dev) struct seq_oss_midi *mdev; struct snd_seq_port_subscribe subs; - if ((mdev = get_mididev(dp, dev)) == NULL) + mdev = get_mididev(dp, dev); + if (!mdev) return -ENODEV; if (! mdev->opened || mdev->devinfo != dp) { snd_use_lock_free(&mdev->use_lock); @@ -421,7 +426,8 @@ snd_seq_oss_midi_filemode(struct seq_oss_devinfo *dp, int dev) struct seq_oss_midi *mdev; int mode; - if ((mdev = get_mididev(dp, dev)) == NULL) + mdev = get_mididev(dp, dev); + if (!mdev) return 0; mode = 0; @@ -443,7 +449,8 @@ snd_seq_oss_midi_reset(struct seq_oss_devinfo *dp, int dev) { struct seq_oss_midi *mdev; - if ((mdev = get_mididev(dp, dev)) == NULL) + mdev = get_mididev(dp, dev); + if (!mdev) return; if (! mdev->opened) { snd_use_lock_free(&mdev->use_lock); @@ -491,7 +498,8 @@ snd_seq_oss_midi_get_addr(struct seq_oss_devinfo *dp, int dev, struct snd_seq_ad { struct seq_oss_midi *mdev; - if ((mdev = get_mididev(dp, dev)) == NULL) + mdev = get_mididev(dp, dev); + if (!mdev) return; addr->client = mdev->client; addr->port = mdev->port; @@ -511,7 +519,8 @@ snd_seq_oss_midi_input(struct snd_seq_event *ev, int direct, void *private_data) if (dp->readq == NULL) return 0; - if ((mdev = find_slot(ev->source.client, ev->source.port)) == NULL) + mdev = find_slot(ev->source.client, ev->source.port); + if (!mdev) return 0; if (! (mdev->opened & PERM_READ)) { snd_use_lock_free(&mdev->use_lock); @@ -623,7 +632,8 @@ snd_seq_oss_midi_putc(struct seq_oss_devinfo *dp, int dev, unsigned char c, stru { struct seq_oss_midi *mdev; - if ((mdev = get_mididev(dp, dev)) == NULL) + mdev = get_mididev(dp, dev); + if (!mdev) return -ENODEV; if (snd_midi_event_encode_byte(mdev->coder, c, ev)) { snd_seq_oss_fill_addr(dp, ev, mdev->client, mdev->port); @@ -642,7 +652,8 @@ snd_seq_oss_midi_make_info(struct seq_oss_devinfo *dp, int dev, struct midi_info { struct seq_oss_midi *mdev; - if ((mdev = get_mididev(dp, dev)) == NULL) + mdev = get_mididev(dp, dev); + if (!mdev) return -ENXIO; inf->device = dev; inf->dev_type = 0; /* FIXME: ?? */ |