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authorTakashi Iwai <tiwai@suse.de>2018-04-09 23:21:49 +0300
committerTakashi Iwai <tiwai@suse.de>2018-04-16 15:01:53 +0300
commit057666b69b1d51feb389a17ec73722b001aaf3d0 (patch)
tree1f00290b7dfccef07b74a656bf66d08cd13440dc /sound/pci/emu10k1
parent0be5168047c22ad6b2fa675f02e8090b192fbc8f (diff)
downloadlinux-057666b69b1d51feb389a17ec73722b001aaf3d0.tar.xz
ALSA: emu10k1: Reduce GFP_ATOMIC allocation
The emu10k1 fx8010 code allocates each irq resource dynamically and links to the list at PCM trigger callback. Due to the nature of trigger callback, the allocation is done with GFP_ATOMIC, hence it may fail more often. Moreover, the irq resource isn't big at all, and using the kmalloc for this won't save many bytes, either. This patch removes the dynamic allocation and embeds the irq resource into struct snd_emu10k1_fx8010_pcm.irq field instead of keeping a pointer. As a result, it simplifies the code and removes the unnecessary GFP_ATOMIC usage. Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/emu10k1')
-rw-r--r--sound/pci/emu10k1/emufx.c9
-rw-r--r--sound/pci/emu10k1/emupcm.c2
2 files changed, 2 insertions, 9 deletions
diff --git a/sound/pci/emu10k1/emufx.c b/sound/pci/emu10k1/emufx.c
index a2b56b188be4..608ff4857d70 100644
--- a/sound/pci/emu10k1/emufx.c
+++ b/sound/pci/emu10k1/emufx.c
@@ -421,14 +421,10 @@ int snd_emu10k1_fx8010_register_irq_handler(struct snd_emu10k1 *emu,
snd_fx8010_irq_handler_t *handler,
unsigned char gpr_running,
void *private_data,
- struct snd_emu10k1_fx8010_irq **r_irq)
+ struct snd_emu10k1_fx8010_irq *irq)
{
- struct snd_emu10k1_fx8010_irq *irq;
unsigned long flags;
- irq = kmalloc(sizeof(*irq), GFP_ATOMIC);
- if (irq == NULL)
- return -ENOMEM;
irq->handler = handler;
irq->gpr_running = gpr_running;
irq->private_data = private_data;
@@ -443,8 +439,6 @@ int snd_emu10k1_fx8010_register_irq_handler(struct snd_emu10k1 *emu,
emu->fx8010.irq_handlers = irq;
}
spin_unlock_irqrestore(&emu->fx8010.irq_lock, flags);
- if (r_irq)
- *r_irq = irq;
return 0;
}
@@ -468,7 +462,6 @@ int snd_emu10k1_fx8010_unregister_irq_handler(struct snd_emu10k1 *emu,
tmp->next = tmp->next->next;
}
spin_unlock_irqrestore(&emu->fx8010.irq_lock, flags);
- kfree(irq);
return 0;
}
diff --git a/sound/pci/emu10k1/emupcm.c b/sound/pci/emu10k1/emupcm.c
index cefe613ef7b7..d39458ab251f 100644
--- a/sound/pci/emu10k1/emupcm.c
+++ b/sound/pci/emu10k1/emupcm.c
@@ -1724,7 +1724,7 @@ static int snd_emu10k1_fx8010_playback_trigger(struct snd_pcm_substream *substre
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
case SNDRV_PCM_TRIGGER_SUSPEND:
- snd_emu10k1_fx8010_unregister_irq_handler(emu, pcm->irq); pcm->irq = NULL;
+ snd_emu10k1_fx8010_unregister_irq_handler(emu, &pcm->irq);
snd_emu10k1_ptr_write(emu, emu->gpr_base + pcm->gpr_trigger, 0, 0);
pcm->tram_pos = INITIAL_TRAM_POS(pcm->buffer_size);
pcm->tram_shift = 0;