--- include/sound/pcm.h | 3 ++- sound/core/pcm.c | 3 --- sound/core/pcm_native.c | 14 ++++++++------ 3 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/include/sound/pcm.h b/include/sound/pcm.h index de6d981..91daac3 100644 --- a/include/sound/pcm.h +++ b/include/sound/pcm.h @@ -29,6 +29,7 @@ #include <linux/poll.h> #include <linux/mm.h> #include <linux/bitops.h> +#include <linux/pm_qos_params.h>

#define snd_pcm_substream_chip(substream) ((substream)->private_data) #define snd_pcm_chip(pcm) ((pcm)->private_data) @@ -355,7 +356,7 @@ struct snd_pcm_substream { int number; char name[32]; /* substream name */ int stream; /* stream (direction) */ - char latency_id[20]; /* latency identifier */ + struct pm_qos_request_list *latency_pm_qos_req; /* pm_qos latency request */ size_t buffer_bytes_max; /* limit ring buffer size */ struct snd_dma_buffer dma_buffer; unsigned int dma_buf_id; diff --git a/sound/core/pcm.c b/sound/core/pcm.c index c69c60b..6faf4b5 100644 --- a/sound/core/pcm.c +++ b/sound/core/pcm.c @@ -647,9 +647,6 @@ int snd_pcm_new_stream(struct snd_pcm *pcm, int stream, int substream_count) substream->number = idx; substream->stream = stream; sprintf(substream->name, "subdevice #%i", idx); - snprintf(substream->latency_id, sizeof(substream->latency_id), - "ALSA-PCM%d-%d%c%d", pcm->card->number, pcm->device, - (stream ? 'c' : 'p'), idx); substream->buffer_bytes_max = UINT_MAX; if (prev == NULL) pstr->substream = substream; diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c index ab73edf..2aab6cf 100644 --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -447,11 +447,13 @@ static int snd_pcm_hw_params(struct snd_pcm_substream *substream, snd_pcm_timer_resolution_change(substream); runtime->status->state = SNDRV_PCM_STATE_SETUP;

- pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY, - substream->latency_id); + if (substream->latency_pm_qos_req) { + pm_qos_remove_request(substream->latency_pm_qos_req); + substream->latency_pm_qos_req = NULL; + } if ((usecs = period_to_usecs(runtime)) >= 0) - pm_qos_add_requirement(PM_QOS_CPU_DMA_LATENCY, - substream->latency_id, usecs); + substream->latency_pm_qos_req = pm_qos_add_request( + PM_QOS_CPU_DMA_LATENCY, usecs); return 0; _error: /* hardware might be unuseable from this time, @@ -506,8 +508,8 @@ static int snd_pcm_hw_free(struct snd_pcm_substream *substream) if (substream->ops->hw_free) result = substream->ops->hw_free(substream); runtime->status->state = SNDRV_PCM_STATE_OPEN; - pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY, - substream->latency_id); + pm_qos_remove_request(substream->latency_pm_qos_req); + substream->latency_pm_qos_req = NULL; return result; }