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-rw-r--r--sound/isa/gus/gus_irq.c18
-rw-r--r--sound/isa/gus/gus_main.c16
2 files changed, 20 insertions, 14 deletions
diff --git a/sound/isa/gus/gus_irq.c b/sound/isa/gus/gus_irq.c
index a0430b338d67..cd9a6f1c99e6 100644
--- a/sound/isa/gus/gus_irq.c
+++ b/sound/isa/gus/gus_irq.c
@@ -45,11 +45,13 @@ __again:
// snd_printk("IRQ: status = 0x%x\n", status);
if (status & 0x02) {
STAT_ADD(gus->gf1.interrupt_stat_midi_in);
- gus->gf1.interrupt_handler_midi_in(gus);
+ if (gus->gf1.interrupt_handler_midi_in)
+ gus->gf1.interrupt_handler_midi_in(gus);
}
if (status & 0x01) {
STAT_ADD(gus->gf1.interrupt_stat_midi_out);
- gus->gf1.interrupt_handler_midi_out(gus);
+ if (gus->gf1.interrupt_handler_midi_out)
+ gus->gf1.interrupt_handler_midi_out(gus);
}
if (status & (0x20 | 0x40)) {
unsigned int already, _current_;
@@ -85,20 +87,24 @@ __again:
}
if (status & 0x04) {
STAT_ADD(gus->gf1.interrupt_stat_timer1);
- gus->gf1.interrupt_handler_timer1(gus);
+ if (gus->gf1.interrupt_handler_timer1)
+ gus->gf1.interrupt_handler_timer1(gus);
}
if (status & 0x08) {
STAT_ADD(gus->gf1.interrupt_stat_timer2);
- gus->gf1.interrupt_handler_timer2(gus);
+ if (gus->gf1.interrupt_handler_timer2)
+ gus->gf1.interrupt_handler_timer2(gus);
}
if (status & 0x80) {
if (snd_gf1_i_look8(gus, SNDRV_GF1_GB_DRAM_DMA_CONTROL) & 0x40) {
STAT_ADD(gus->gf1.interrupt_stat_dma_write);
- gus->gf1.interrupt_handler_dma_write(gus);
+ if (gus->gf1.interrupt_handler_dma_write)
+ gus->gf1.interrupt_handler_dma_write(gus);
}
if (snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL) & 0x40) {
STAT_ADD(gus->gf1.interrupt_stat_dma_read);
- gus->gf1.interrupt_handler_dma_read(gus);
+ if (gus->gf1.interrupt_handler_dma_read)
+ gus->gf1.interrupt_handler_dma_read(gus);
}
}
if (--loop > 0)
diff --git a/sound/isa/gus/gus_main.c b/sound/isa/gus/gus_main.c
index ada9209a93a6..b14d5d6d9a32 100644
--- a/sound/isa/gus/gus_main.c
+++ b/sound/isa/gus/gus_main.c
@@ -154,6 +154,14 @@ int snd_gus_create(struct snd_card *card,
gus = kzalloc(sizeof(*gus), GFP_KERNEL);
if (gus == NULL)
return -ENOMEM;
+ spin_lock_init(&gus->reg_lock);
+ spin_lock_init(&gus->voice_alloc);
+ spin_lock_init(&gus->active_voice_lock);
+ spin_lock_init(&gus->event_lock);
+ spin_lock_init(&gus->dma_lock);
+ spin_lock_init(&gus->pcm_volume_level_lock);
+ spin_lock_init(&gus->uart_cmd_lock);
+ mutex_init(&gus->dma_mutex);
gus->gf1.irq = -1;
gus->gf1.dma1 = -1;
gus->gf1.dma2 = -1;
@@ -218,14 +226,6 @@ int snd_gus_create(struct snd_card *card,
gus->gf1.pcm_channels = pcm_channels;
gus->gf1.volume_ramp = 25;
gus->gf1.smooth_pan = 1;
- spin_lock_init(&gus->reg_lock);
- spin_lock_init(&gus->voice_alloc);
- spin_lock_init(&gus->active_voice_lock);
- spin_lock_init(&gus->event_lock);
- spin_lock_init(&gus->dma_lock);
- spin_lock_init(&gus->pcm_volume_level_lock);
- spin_lock_init(&gus->uart_cmd_lock);
- mutex_init(&gus->dma_mutex);
if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, gus, &ops)) < 0) {
snd_gus_free(gus);
return err;