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ASoC: sh: Replace tasklet with work

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The tasklet is an old API that should be deprecated, usually can be
converted to another decent API.  In ASoC SH SIU driver, a tasklet is
still used for offloading the hardware reset function.  It can be
achieved gracefully with a work queued, too.

This patch replaces the tasklet usage in SH SIU driver with a simple
work.  The conversion is fairly straightforward.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20200903104749.21435-3-tiwai@suse.de
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Takashi Iwai 2020-09-03 12:47:48 +02:00 committed by Mark Brown
parent a3d1f931ea
commit d668e640d5
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
2 changed files with 12 additions and 11 deletions
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2
sound/soc/sh/siu.h
View File

@ -96,7 +96,7 @@ struct siu_info {
};
struct siu_stream {
struct tasklet_struct tasklet;
struct work_struct work;
struct snd_pcm_substream *substream;
snd_pcm_format_t format;
size_t buf_bytes;

21
sound/soc/sh/siu_pcm.c
View File

@ -70,7 +70,7 @@ static int siu_pcm_stmwrite_start(struct siu_port *port_info)
siu_stream->rw_flg = RWF_STM_WT;
/* DMA transfer start */
tasklet_schedule(&siu_stream->tasklet);
queue_work(system_highpri_wq, &siu_stream->work);
return 0;
}
@ -93,7 +93,7 @@ static void siu_dma_tx_complete(void *arg)
siu_stream->cur_period * siu_stream->period_bytes,
siu_stream->buf_bytes, siu_stream->cookie);
tasklet_schedule(&siu_stream->tasklet);
queue_work(system_highpri_wq, &siu_stream->work);
/* Notify alsa: a period is done */
snd_pcm_period_elapsed(siu_stream->substream);
@ -198,9 +198,10 @@ static int siu_pcm_rd_set(struct siu_port *port_info,
return 0;
}
static void siu_io_tasklet(struct tasklet_struct *t)
static void siu_io_work(struct work_struct *work)
{
struct siu_stream *siu_stream = from_tasklet(siu_stream, t, tasklet);
struct siu_stream *siu_stream = container_of(work, struct siu_stream,
work);
struct snd_pcm_substream *substream = siu_stream->substream;
struct device *dev = substream->pcm->card->dev;
struct snd_pcm_runtime *rt = substream->runtime;
@ -253,7 +254,7 @@ static int siu_pcm_stmread_start(struct siu_port *port_info)
/* during stmread flag set */
siu_stream->rw_flg = RWF_STM_RD;
tasklet_schedule(&siu_stream->tasklet);
queue_work(system_highpri_wq, &siu_stream->work);
return 0;
}
@ -519,9 +520,9 @@ static int siu_pcm_new(struct snd_soc_component *component,
(*port_info)->pcm = pcm;
/* IO tasklets */
tasklet_setup(&(*port_info)->playback.tasklet, siu_io_tasklet);
tasklet_setup(&(*port_info)->capture.tasklet, siu_io_tasklet);
/* IO works */
INIT_WORK(&(*port_info)->playback.work, siu_io_work);
INIT_WORK(&(*port_info)->capture.work, siu_io_work);
}
dev_info(card->dev, "SuperH SIU driver initialized.\n");
@ -534,8 +535,8 @@ static void siu_pcm_free(struct snd_soc_component *component,
struct platform_device *pdev = to_platform_device(pcm->card->dev);
struct siu_port *port_info = siu_ports[pdev->id];
tasklet_kill(&port_info->capture.tasklet);
tasklet_kill(&port_info->playback.tasklet);
cancel_work_sync(&port_info->capture.work);
cancel_work_sync(&port_info->playback.work);
siu_free_port(port_info);