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>
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@ -1199,7 +1199,7 @@ snd_rme96_playback_spdif_open(struct snd_pcm_substream *substream)
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snd_pcm_set_sync(substream);
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spin_lock_irq(&rme96->lock);
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if (rme96->playback_substream != NULL) {
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if (rme96->playback_substream) {
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spin_unlock_irq(&rme96->lock);
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return -EBUSY;
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}
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@ -1248,7 +1248,7 @@ snd_rme96_capture_spdif_open(struct snd_pcm_substream *substream)
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}
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spin_lock_irq(&rme96->lock);
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if (rme96->capture_substream != NULL) {
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if (rme96->capture_substream) {
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spin_unlock_irq(&rme96->lock);
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return -EBUSY;
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}
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@ -1268,7 +1268,7 @@ snd_rme96_playback_adat_open(struct snd_pcm_substream *substream)
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snd_pcm_set_sync(substream);
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spin_lock_irq(&rme96->lock);
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if (rme96->playback_substream != NULL) {
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if (rme96->playback_substream) {
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spin_unlock_irq(&rme96->lock);
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return -EBUSY;
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}
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@ -1315,7 +1315,7 @@ snd_rme96_capture_adat_open(struct snd_pcm_substream *substream)
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}
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spin_lock_irq(&rme96->lock);
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if (rme96->capture_substream != NULL) {
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if (rme96->capture_substream) {
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spin_unlock_irq(&rme96->lock);
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return -EBUSY;
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}
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@ -1578,9 +1578,9 @@ snd_rme96_free(void *private_data)
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{
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struct rme96 *rme96 = (struct rme96 *)private_data;
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if (rme96 == NULL) {
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if (!rme96)
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return;
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}
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if (rme96->irq >= 0) {
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snd_rme96_trigger(rme96, RME96_STOP_BOTH);
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rme96->areg &= ~RME96_AR_DAC_EN;
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