ALSA: rme96: Adjust five checks for null pointers
The script “checkpatch.pl” pointed information out like the following.
Comparison to NULL could be written …
Thus fix the affected source code places.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/rme96.c b/sound/pci/rme96.c
index 0cdfd53..b488d74 100644
--- a/sound/pci/rme96.c
+++ b/sound/pci/rme96.c
@@ -1199,7 +1199,7 @@
snd_pcm_set_sync(substream);
spin_lock_irq(&rme96->lock);
- if (rme96->playback_substream != NULL) {
+ if (rme96->playback_substream) {
spin_unlock_irq(&rme96->lock);
return -EBUSY;
}
@@ -1248,7 +1248,7 @@
}
spin_lock_irq(&rme96->lock);
- if (rme96->capture_substream != NULL) {
+ if (rme96->capture_substream) {
spin_unlock_irq(&rme96->lock);
return -EBUSY;
}
@@ -1268,7 +1268,7 @@
snd_pcm_set_sync(substream);
spin_lock_irq(&rme96->lock);
- if (rme96->playback_substream != NULL) {
+ if (rme96->playback_substream) {
spin_unlock_irq(&rme96->lock);
return -EBUSY;
}
@@ -1315,7 +1315,7 @@
}
spin_lock_irq(&rme96->lock);
- if (rme96->capture_substream != NULL) {
+ if (rme96->capture_substream) {
spin_unlock_irq(&rme96->lock);
return -EBUSY;
}
@@ -1578,9 +1578,9 @@
{
struct rme96 *rme96 = (struct rme96 *)private_data;
- if (rme96 == NULL) {
+ if (!rme96)
return;
- }
+
if (rme96->irq >= 0) {
snd_rme96_trigger(rme96, RME96_STOP_BOTH);
rme96->areg &= ~RME96_AR_DAC_EN;