From 8079c5d5868511fe4ce6afca02937c94ff31ed24 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Tue, 10 Dec 2019 14:58:38 +0100 Subject: [PATCH] media: usbtv: Use managed buffer allocation Clean up the driver with the new managed buffer allocation API. The hw_params and hw_free callbacks became superfluous and dropped. Signed-off-by: Takashi Iwai Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/usb/usbtv/usbtv-audio.c | 28 +--------------------------- 1 file changed, 1 insertion(+), 27 deletions(-) diff --git a/drivers/media/usb/usbtv/usbtv-audio.c b/drivers/media/usb/usbtv/usbtv-audio.c index e746c8d..b270098 100644 --- a/drivers/media/usb/usbtv/usbtv-audio.c +++ b/drivers/media/usb/usbtv/usbtv-audio.c @@ -85,30 +85,6 @@ static int snd_usbtv_pcm_close(struct snd_pcm_substream *substream) return 0; } -static int snd_usbtv_hw_params(struct snd_pcm_substream *substream, - struct snd_pcm_hw_params *hw_params) -{ - int rv; - struct usbtv *chip = snd_pcm_substream_chip(substream); - - rv = snd_pcm_lib_malloc_pages(substream, - params_buffer_bytes(hw_params)); - - if (rv < 0) { - dev_warn(chip->dev, "pcm audio buffer allocation failure %i\n", - rv); - return rv; - } - - return 0; -} - -static int snd_usbtv_hw_free(struct snd_pcm_substream *substream) -{ - snd_pcm_lib_free_pages(substream); - return 0; -} - static int snd_usbtv_prepare(struct snd_pcm_substream *substream) { struct usbtv *chip = snd_pcm_substream_chip(substream); @@ -337,8 +313,6 @@ static const struct snd_pcm_ops snd_usbtv_pcm_ops = { .open = snd_usbtv_pcm_open, .close = snd_usbtv_pcm_close, .ioctl = snd_pcm_lib_ioctl, - .hw_params = snd_usbtv_hw_params, - .hw_free = snd_usbtv_hw_free, .prepare = snd_usbtv_prepare, .trigger = snd_usbtv_card_trigger, .pointer = snd_usbtv_pointer, @@ -377,7 +351,7 @@ int usbtv_audio_init(struct usbtv *usbtv) pcm->private_data = usbtv; snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_usbtv_pcm_ops); - snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS, + snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS, NULL, USBTV_AUDIO_BUFFER, USBTV_AUDIO_BUFFER); rv = snd_card_register(card); -- 2.7.4